Introduction

This machine is a ride-on, rotary-blade lawn mower intended to be used by professional, hired operators in commercial applications. It is primarily designed for cutting grass on well-maintained lawns in parks, sports fields, and on commercial grounds. Using this product for purposes other than its intended use could prove dangerous to you and bystanders.

Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage. You are responsible for operating the product properly and safely.

Visit www.Toro.com for product safety and operation training materials, accessory information, help finding a dealer, or to register your product.

Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Figure 1 identifies the location of the model and serial numbers on the right front frame of the product. Write the numbers in the space provided.

Important: With your mobile device, you can scan the QR code on the serial number decal (if equipped) to access warranty, parts, and other product information.

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This manual identifies potential hazards and has safety messages identified by the safety-alert symbol (Figure 2), which signals a hazard that may cause serious injury or death if you do not follow the recommended precautions.

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This manual uses 2 words to highlight information. Important calls attention to special mechanical information and Note emphasizes general information worthy of special attention.

Please refer to the engine manufacturer’s information included with the machine.

Safety

General Safety

This product is capable of amputating hands and feet and of throwing objects. Always follow all safety instructions to avoid serious personal injury.

  • Read and understand the contents of this Operator’s Manual before starting the engine.

  • Use your full attention while operating the machine. Do not engage in any activity that causes distractions; otherwise, injury or property damage may occur.

  • Do not operate the machine without all guards and other safety protective devices in place and functioning properly on the machine.

  • Keep your hands and feet away from rotating parts. Keep clear of the discharge opening.

  • Keep bystanders and children out of the operating area. Never allow children to operate the machine.

  • Shut off the engine, remove the key, and wait for all movement to stop before you leave the operator’s position. Allow the machine to cool before adjusting, servicing, cleaning, or storing it.

Improperly using or maintaining this machine can result in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the safety-alert symbol Graphic, which means Caution, Warning, or Danger—personal safety instruction. Failure to comply with these instructions may result in personal injury or death.

Safety and Instructional Decals

Graphic

Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or missing.

decal93-7818
decal98-4387
decal106-6754
decal106-6755
decal107-1972
decal112-5297
decal117-4763
decal117-4764
decal117-4765
decal117-4766
decalbatterysymbols
decal120-8947
decal121-3884
decal121-3887
decal127-3700
decal136-2931
decal136-3185
decal136-3711
decal145-5257
decal121-3627

Setup

Note: Determine the left and right sides of the machine from the normal operating position.

Adjusting the Roller Scraper

Optional

The optional rear roller scraper functions best when there is an even gap of 0.5 to 1 mm (0.02 to 0.04 inch) between the scraper and the roller.

  1. Loosen the grease fitting and the mounting screw (Figure 3).

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  2. Slide the scraper up or down until you obtain a gap of 0.5 to 1 mm (0.02 to 0.04 inch) between the rod and the roller.

  3. Tighten the grease fitting and screw to 41 N∙m (30 ft-lb) in an alternating sequence.

Installing the Mulching Baffle

Optional

Contact your authorized Toro distributor for the correct mulching baffle.

  1. Thoroughly clean debris from the mounting holes on the rear wall and left wall of the chamber.

  2. Install the mulching baffle in the rear opening and secure it with 5 flange-head bolts (Figure 4).

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  3. Verify that the mulching baffle does not interfere with the tip of the blade and does not protrude inside the surface of the rear chamber wall.

    Danger

    Using the high-lift blade with the mulching baffle could cause the blade to break, resulting in personal injury or death.

    Do not use the high-lift blade with the baffle.

Preparing the Machine

  1. Park the machine on a level surface.

  2. For Groundsmaster 4500 and 4700 machines, release the No. 4 and No. 5 cutting-unit cables (Figure 27).

  3. For Groundsmaster 4700 machines, release the No. 6 and No. 7 cutting-unit latches (Figure 30).

  4. Lower the cutting units.

  5. Engage the parking brake.

  6. Shut off the engine and remove the key.

  7. Check the tire pressure before use; refer to Checking the Tire Pressure.

    Important: Maintain pressure in all tires to ensure a good quality-of-cut and proper machine performance. Do not underinflate the tires.

  8. Check the rear-axle lubricant level before you start the engine for the first time; refer to Checking the Rear-Axle Lubricant.

  9. Check the engine-oil level before starting the engine; refer to Checking the Engine-Oil Level.

  10. Check the hydraulic-fluid level before starting the engine; refer to Checking the Hydraulic-Fluid Level.

  11. Check the cooling system before starting the engine; refer to Checking the Cooling System.

  12. Grease the machine before use; refer to Greasing the Bearings and Bushings.

    Important: Failure to properly grease the machine will result in premature failure of critical parts.

Product Overview

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Traction Pedal

The traction pedal (Figure 5) controls forward and reverse operation. Press the top of the pedal to move forward and the bottom to move backward. When the cutting units are fully raised, the pedal controls the engine and traction speed like a car.

Note: In emergency braking situations, remove your foot from the traction pedal and then press the brake pedals. This is the quickest way to stop the machine.

Brake Pedals

There are 2 foot pedals that operate individual wheel brakes for turning assistance, parking, and to aid in better side-hill traction. A latch connects the pedals for parking-brake operation and transport (Figure 5).

Pedal-Locking Latch

The pedal-locking latch connects the pedals together to engage the parking brake (Figure 5).

Parking-Brake Pedal

To engage the parking brake, (Figure 5) connect the pedals together with the pedal-locking latch and push down on the right brake pedal while engaging the toe pedal. To release the parking brake, press 1 of the brake pedals until the parking brake latch retracts.

Tilt-Steering Pedal

To tilt the steering wheel toward you, press the foot pedal down, pull the steering tower toward you to the most comfortable position, and release the pedal (Figure 5). To move the steering wheel away from you, press the foot pedal and release it when the steering wheel reaches the desired operating position.

Key Switch

The key switch (Figure 6) has 3 positions: OFF, ON/PREHEAT, and START.

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PTO Switch

The PTO switch has 2 positions: OUT (ENGAGE) and IN (DISENGAGE). Pull the PTO button out to engage the cutting-unit blades. Push the button in to disengage the cutting-unit blades (Figure 6).

High and Low Speed Range Switch

This switch (Figure 6) controls the machines 2 speed ranges; high and low.

Select the H/L AUTO position to allow the machine to automatically select high or low speed.

Select the LOW position to manually override to low speed only.

You can change the switch position at any time, but the machine will only switch between speed ranges when the traction pedal is in neutral and the machine is stopped.

Note: To get to high speed in the H/L AUTO position, disengage the PTO and fully raise the cutting units.

Note: If you have the switch in the H/L AUTO position, you cannot lower the decks from the fully-raised position unless the traction pedal is in neutral and the machine is stopped.

Cruise-Control Switch

The cruise-control switch locks in the cruise control to maintain the desired ground speed (Figure 7). Pressing the rear of the switch turns off the cruise control, the middle position of the switch enables the cruise-control function, and the front of the switch sets the desired ground speed.

Once the cruise control is set, you can change the speed using the InfoCenter (Figure 25).

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Lift Switches

The lift switches raise and lower the cutting units (Figure 6). Press the switches forward to lower the cutting units and rearward to raise the cutting units. When starting the machine, with the cutting units in the down position, press the lift switch down to allow the cutting units to float and mow.

Note: The cutting units do not lower while in the high-speed range and they do not raise or lower if you are out of the seat. Also, the cutting units lower with the key in the ON position and you are in the seat.

Light Switch

Press the light switch upward to turn the lights to the ON position (Figure 6).

Press the light switch downward to turn the lights to the OFF position.

Power Point

Use the power point (Figure 8) to power optional 12V electrical accessories.

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Bag Holder

Use the bag holder for storage (Figure 8).

Seat Adjustments

Seat-Adjustment Lever

Move the seat adjustment lever on the side of the seat outward, slide the seat to the desired position, and release the lever to lock the seat into position (Figure 9).

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Armrest Adjustment Knob

Rotate the knob to adjust the armrest angle (Figure 9).

Seat-Back Adjustment Lever

Move the lever to adjust the seat-back angle (Figure 9).

Weight Gauge

The weight gauge indicates when the seat is adjusted to the operator’s weight (Figure 9). Adjust the height by positioning the suspension within the range of the green region.

Weight Adjustment Lever

Use this lever to adjust the seat to your weight (Figure 9). Pull the lever up to increase the air pressure and push the lever down to decrease the air pressure. The proper adjustment is correct when the weight gauge is in the green region.

InfoCenter LCD Display

The InfoCenter LCD display (Figure 6) shows information about your machine, such as the operating status, various diagnostics, and other information about the machine

The screens that display depend on which buttons you select. The purpose of each button may change depending on what is required at the time.

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Machine Specifications

Specifications Table

Description4500-DFigure 10 reference4700-DFigure 10 reference
Width of cut280 cm (110 inches)D380 cm (150 inches)F
Overall width 
 Cutting units down286 cm (113 inches)E391 cm (154 inches)G
 Cutting units up (transport)224 cm (88 inches)A224 cm (88 inches)A
Track width 
 Front224 cm (88 inches)B224 cm (88 inches)B
 Rear141 cm (56 inches)M141 cm (56 inches)M
Height with ROPS226 cm (88.8 inches)C226 cm (88.8 inches)C
Overall length 
 Cutting units down370 cm (146 inches)H370 cm (146 inches)H
 Cutting units up (transport)370 cm (146 inches)L370 cm (146 inches)L
Ground clearance15 cm (6 inches)15 cm (6 inches)
Wheel base171 cm (68 inches)K171 cm (68 inches)K
Net weight1937 kg (4,270 lb)2277 kg (5,020 lb)
(with cutting units and no fuel)

Note: Specifications and design are subject to change without notice.

Cutting Unit Specifications

Specifications Table

Length86.4 cm (34 inches)
Width86.4 cm (34 inches)
Height24.4 cm (9.6 inches) to carrier mount
26.7 cm (10-1/2 inches) at 3/4-inch height of cut
34.9 cm (13-3/4 inches) at 4-inch height of cut
Weight88 kg (195 lb)

Attachments/Accessories

A selection of Toro approved attachments and accessories is available for use with the machine to enhance and expand its capabilities. Contact your Authorized Service Dealer or authorized Toro distributor or go to www.Toro.com for a list of all approved attachments and accessories.

Use only genuine Toro replacement parts and accessories. Replacement parts and accessories made by other manufacturers could be dangerous, and such use could void the product warranty.

Operation

Note: Determine the left and right sides of the machine from the normal operating position.

Before Operation

Before Operation Safety

General Safety

  • Never allow children or untrained people to operate or service the machine. Local regulations may restrict the age of the operator. The owner is responsible for training all operators and mechanics.

  • Become familiar with the safe operation of the equipment, operator controls, and safety signs.

  • Shut off the engine, remove the key, and wait for all movement to stop before you leave the operator’s position. Allow the machine to cool before adjusting, servicing, cleaning, or storing it.

  • Know how to stop the machine and shut off the engine quickly.

  • Check that operator-presence controls, safety switches, and guards are attached and functioning properly. Do not operate the machine unless they are functioning properly.

  • Before mowing, always inspect the machine to ensure that the blades, blade bolts, and cutting assemblies are in good working condition. Replace worn or damaged blades and bolts in sets to preserve balance.

  • Inspect the area where you will use the machine and remove all objects that the machine could throw.

Fuel Safety

  • Use extreme care in handling fuel. It is flammable and its vapors are explosive.

  • Extinguish all cigarettes, cigars, pipes, and other sources of ignition.

  • Use only an approved fuel container.

  • Do not remove the fuel cap or fill the fuel tank while the engine is running or hot.

  • Do not add or drain fuel in an enclosed space.

  • Do not store the machine or fuel container where there is an open flame, spark, or pilot light, such as on a water heater or other appliance.

  • If you spill fuel, do not attempt to start the engine; avoid creating any source of ignition until the fuel vapors have dissipated.

Checking the Engine-Oil Level

Before you start the engine and use the machine, check the oil level in the engine crankcase; refer to Checking the Engine-Oil Level.

Checking the Cooling System

Before you start the engine and use the machine, check the cooling system; refer to Checking the Cooling System.

Checking the Hydraulic System

Before you start the engine and use the machine, check the hydraulic system; refer to Checking the Hydraulic-Fluid Level.

Draining the Water Separator

Drain water or other contaminants from the water separator; refer to Draining Water from the Fuel/Water Separator.

Checking the Rear Axle and Gearbox for Leaks

Check the rear axle and rear-axle gearbox for leaks; refer to Checking the Rear Axle and Gearbox for Leaks.

Filling the Fuel Tank

Fuel Tank Capacity

Fuel tank capacity: 83 L (22 US gallons)

Fuel Specification

Important: Use low sulphur diesel fuel.Failure to observe the following cautions may damage the engine.

  • Never use kerosene or gasoline instead of diesel fuel.

  • Never mix kerosene or used engine oil with the diesel fuel.

  • Never keep fuel in containers with zinc plating on the inside.

  • Do not use fuel additives.

Petroleum Diesel

Cetane rating: 45 or higher

Sulfur content: Low sulfur (<500 ppm)

Fuel Table

Diesel fuel specificationLocation
ASTM D975USA
No. 1-D S15
No. 2-D S15
EN 590European Union
ISO 8217 DMXInternational
JIS K2204 Grade No. 2Japan
KSM-2610Korea
  • Use only clean, fresh diesel fuel or biodiesel fuels.

  • Purchase fuel in quantities that can be used within 180 days to ensure fuel freshness.

Use summer-grade diesel fuel (No. 2-D) at temperatures above -7°C (20°F) and winter-grade fuel (No. 1-D or No. 1-D/2-D blend) below that temperature.

Note: Use of winter-grade fuel at lower temperatures provides lower flash point and cold flow characteristics which eases starting and reduces fuel filter plugging.Using summer-grade fuel above -7°C (20°F) contributes toward longer fuel pump life and increased power compared to winter-grade fuel.

Using Biodiesel

This machine can also use a biodiesel-blended fuel of up to B20 (20% biodiesel, 80% petrodiesel).

Sulfur content: Ultra-low sulfur (<15 ppm)

Biodiesel fuel specification: ASTM D6751 or EN14214

Blended fuel specification: ASTM D975, EN590, or JIS K2204

Important: The petroleum diesel portion must be ultra-low sulfur.

Observe the following precautions:

  • Biodiesel blends may damage painted surfaces.

  • Use B5 (biodiesel content of 5%) or lesser blends in cold weather.

  • Monitor seals, hoses, gaskets in contact with fuel as they may degrade over time.

  • Fuel filter plugging may occur for a time after you convert to biodiesel blends.

  • For more information on biodiesel, contact your authorized Toro distributor.

Adding Fuel

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Fill the tank to about 6 to 13 mm (1/4 to 1/2 inch) below the top of the tank, not the filler neck, with Number 2-D diesel fuel.

Note: If possible, fill the fuel tank after each use; this will minimize possible buildup of condensation inside the fuel tank.

Checking the Tire Pressure

Maintenance Service IntervalMaintenance Procedure
Before each use or daily
  • Check the tire pressure.
  • The correct air pressure in the tires is 138 kPa (20 psi).

    Important: Maintain the recommended pressure in all tires to ensure a good quality of cut and proper machine performance. Do not under-inflate the tires.Check the air pressure in all the tires before operating the machine.

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    Checking the Torque of the Wheel Lug Nuts

    Maintenance Service IntervalMaintenance Procedure
    After the first hour
  • Torque the wheel lug nuts.
  • After the first 10 hours
  • Torque the wheel lug nuts.
  • Every 200 hours
  • Torque the wheel lug nuts.
  • Torque the wheel lug nuts to 115 to 136 N∙m (85 to 100 ft-lb) in the order shown in Figure 13 and Figure 14.

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    Warning

    Failing to maintain proper torque of the wheel lug nuts could result in personal injury.

    Torque the wheel lug nuts to the proper torque value.

    Adjusting the Height of Cut

    Important: The rotary cutting units often cut approximately 6 mm (1/4 inch) lower than a reel cutting unit with the same bench setting. It may be necessary to set the rotary cutting-unit bench measurement at 6 mm (1/4 inch) above that of reel cutting units cutting in the same area.

    Important: Access to the rear cutting units is greatly improved by removing the cutting unit from the machine.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting unit to the ground, shut off the engine, and remove the key.

    2. Loosen the bolt securing each height-of-cut bracket to the height-of-cut plate (front and each side) as shown in Figure 15.

    3. Beginning with front adjustment, remove the bolt.

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    4. While supporting the chamber, remove the spacer (Figure 15).

    5. Move the chamber to the desired height of cut and install a spacer into the designated height-of-cut hole and slot (Figure 16).

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    6. Position the tapped plate in-line with the spacer.

    7. Install the bolt finger-tight.

    8. Repeat steps 4 through 7 for each side adjustment.

    9. Torque all 3 bolts to 41 N∙m (30 ft-lb). Always tighten the front bolt first.

      Note: Adjustments of more than 3.8 cm (1-1/2 inches) may require temporary assembly to an intermediate height to prevent binding (e.g., changing from 3.1 to 7 cm (1-1/4 to 2-3/4 inches) height of cut).

    Checking the Interlock Switches

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Check the interlock switches.
  • Caution

    If safety interlock switches are disconnected or damaged, the machine could operate unexpectedly, causing personal injury.

    • Do not tamper with the interlock switches.

    • Check the operation of the interlock switches daily and replace any damaged switches before operating the machine.

    The interlock switches are designed to shut off the machine when you rise from the seat when the traction pedal is pressed. However, you can rise from the seat while the engine is running and the traction pedal is in the NEUTRAL position. Although the engine continues to run when you disengage the PTO switch and release the traction pedal, shut off the engine before rising from the seat.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, and turn the key to the OFF position.

    2. Press the traction pedal and turn the key to the ON position.

      Note: If the engine cranks, there is a malfunction in the interlock system. Correct this malfunction before operating the machine.

    3. Turn the key to the ON position, rise from the seat, and move the PTO switch to ON.

      Note: The PTO should not engage. If the PTO engages, there is a malfunction in the interlock system. Correct this malfunction before operating the machine.

    4. Engage the parking brake, turn the key to the ON position and move the traction pedal out of the NEUTRAL position.

      Note: The InfoCenter displays "traction denied" and the machine should not move. If the machine does move, there is a malfunction in the interlock system. Correct this malfunction before operating the machine.

    Checking the Blade-Stopping Time

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Check the blade-stopping time.
  • Note: Lower the cutting units onto a clean section of turf or hard surface to avoid throwing dust and debris.

    To verify this stopping time, sit in the seat and disengage the PTO. Listen for the rotating blades and record the time it takes for the blades to come to a complete stop. If it takes longer than 7 seconds, adjust the braking valve. Call your authorized Toro distributor for assistance in making this adjustment.

    Selecting a Blade

    Standard Combination Sail

    This blade was designed to provide excellent lift and dispersion in almost any condition. If more or less lift and discharge velocity is required, consider a different blade.

    Attributes: Excellent lift and dispersion in most conditions

    Angled Sail

    The blade generally performs best in lower heights of cut—1.9 to 6.4 cm (3/4 to 2-1/2 inches).

    Attributes:

    • Discharge remains more even at lower heights of cut.

    • Discharge has less tendency to throw left and thus a cleaner look around bunkers and fairways.

    • Lower power requirement at lower heights and dense turf.

    High-Lift Parallel Sail

    The blade generally performs better in the higher heights of cut—7 to 10 cm (2 to 4 inches).

    Attributes:

    • More lift and higher discharge velocity

    • Sparse or limp turf is picked up significantly at higher heights of cut

    • Wet or sticky clippings are discharged more efficiently reducing congestion in the cutting unit.

    • Requires more horsepower to run

    • Tends to discharge further left and can tend to windrow at lower heights of cut

    Warning

    Using a high-lift blade with the mulching baffle could cause the blade to break, resulting in personal injury or death.

    Do not use the high-lift blade with the mulching baffle.

    Atomic Blade

    This blade was designed to provide excellent leaf mulching.

    Attribute: Excellent leaf mulching

    Choosing Accessories

    Optional Equipment Configurations

     Angle Sail BladeHigh-Lift, Parallel-Sail Blade(Do not use with the mulching baffle)Mulching BaffleRoller Scraper
    Grass Cutting: 1.9 to 4.4 cm (3/4 to 1-3/4 inches) height of cutRecommended in most applicationsMay work well in light or sparse turfHas been shown to improve dispersion and after-cut performance on northern grasses that are cut at least 3 times per week and less than 1/3 of the grass blade is removed. Do not use with the high-lift, parallel-sail bladeUse it whenever the rollers build up with grass or large, flat grass clumps of grass are seen. The scrapers may increase clumping in certain applications.
    Grass Cutting: 5 to 6.4 cm (2 to 2-1/2 inches) height of cutRecommended for thick or lush turfRecommended for light or sparse turf
    Grass Cutting: 7 to 10 cm (2-3/4 to 4 inches) height of cutMay work well in lush turfRecommended in most applications
    Leaf MulchingRecommended for use with the mulching baffleNot AllowedUse with combination sail, atomic blade, or angle sail blade only
    ProsEven discharge at lower height of cut; cleaner look around bunkers and fairways; lower power requirementsMore lift and higher discharge velocity; sparse or limp turf is picked up at high height of cut; wet or sticky clippings are discharged efficientlyMay improve dispersion and appearance in certain grass cutting applications; very good for leaf mulchingReduces roller buildup in certain applications
    ConsDoes not lift the grass well in high height-of-cut applications; wet or sticky grass has a tendency to build up in the chamber, leading to poor quality of cut and higher power requirementsRequires more power to run in some applications; tends to windrow at lower height of cut in lush grass; do not use with the mulching baffleGrass will build up in the chamber if you attempt to remove too much grass with the baffle in place 

    Using the InfoCenter LCD Display

    The InfoCenter LCD display shows information about your machine, such as the operating status, various diagnostics and other information about the machine (Figure 17). There is a splash screen and main information screen of the InfoCenter. You can switch between the splash screen and main information screen at any time by pressing any of the InfoCenter buttons and then selecting the appropriate directional arrow.

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    • Left Button, Menu Access/Back Button—press this button to access the InfoCenter menus. You can use it to exit any menu that you are currently using.

    • Middle Button—use this button to scroll down menus.

    • Right Button—use this button to open a menu where a right arrow indicates additional content.

    • Beeper—activated when lowering the cutting units or for advisories and faults.

    Note: The purpose of each button may change depending on what is required at the time. Each button is labeled with an icon displaying its current function.

    InfoCenter Icon Description

    SERVICE DUEIndicates when scheduled service should be performed
    GraphicHours remaining until service
    GraphicReset the service hours Graphic
    GraphicThe status of the engine rpm
    GraphicInfo icon
    GraphicMaximum traction speed setting
    GraphicThe fan is reversed
    GraphicThe air-intake heater is active
    GraphicRaise the left cutting unit.
    GraphicRaise the center cutting unit
    GraphicRaise the right cutting unit
    GraphicThe operator must sit in the seat
    GraphicThe parking brake is engaged
    GraphicThe mode is high
    GraphicNeutral
    GraphicThe mode is low
    GraphicCoolant temperature (°C or °F)
    GraphicTemperature (hot)
    GraphicTraction or Traction Pedal
    GraphicNot allowed
    GraphicStart the engine.
    GraphicThe PTO is on.
    GraphicThe cruise control is on.
    GraphicShut off the engine
    GraphicEngine
    GraphicKey switch
    GraphicCutting units are lowering
    GraphicCutting units are raising
    GraphicPIN code
    GraphicHydraulic fluid temperature
    GraphicCAN bus
    GraphicInfoCenter
    GraphicBad or failed
    GraphicCenter
    GraphicRight
    GraphicLeft
    GraphicBulb
    GraphicOutput of TEC controller or control wire in harness
    GraphicOver the allowed range
    GraphicUnder the allowed range
    Graphic/GraphicOut of range
    GraphicSwitch
    GraphicOperator must release switch
    GraphicOperator should change to indicated state
    Symbols are often combined to form sentences. Some examples are shown below 
    GraphicOperator should put machine in neutral
    GraphicEngine start is denied
    GraphicEngine shutdown
    GraphicEngine coolant is too hot
    GraphicHydraulic fluid is too hot
    GraphicSit down or engage parking brake

    Graphic Accessible only by entering PIN

    Using the Menus

    To access the InfoCenter menu system, press the menu access button while at the main screen. This brings you to the main menu. Refer to the following tables for an overview of the options available from the menus:

    Main Menu
    Menu ItemDescription
    FaultsContains a list of the recent machine faults; refer to the Service Manual for more information.
    ServiceContains information on the machine such as hours of use and other similar numbers
    DiagnosticsLists various states that the machine currently has; you can use this to troubleshoot certain issues as it quickly tells you which machine controls are on and which are off.
    SettingsAllows you to customize and modify configuration variables on the InfoCenter display
    AboutLists the model number, serial number, and software version of your machine
    Service 
    Menu ItemDescription
    HoursLists the total number of hours that the machine, engine, and fan have been on, as well as the number of hours the machine has been transported and overheated
    CountsLists the number of starts, cutting unit/PTO cycles, and fan reversals the machine has experienced
    Diagnostics
    Menu ItemDescription
    Left Cutting UnitRefer to the Service Manual or your authorized Toro distributor for more information on the Engine Run menu and the information contained there.
    Center Cutting Unit
    Right Cutting Unit
    Traction
    HI/LO Range
    PTO
    Engine
    Cruise
    Settings
    Menu ItemDescription
    UnitsControls the units used on the InfoCenter (English or Metric)
    LanguageControls the language used on the InfoCenter*
    LCD BacklightControls the brightness of the LCD display
    LCD ContrastControls the contrast of the LCD display
    Protected MenusAllows a person authorized by your company with the PIN code to access protected menus.
    Protect SettingsAllows the ability to change the settings in the protected settings
    Acceleration GraphicLow, Medium, and High settings control how quickly the traction speed reacts when you move the traction pedal.
    Mow Speed GraphicControls the maximum speed while in mow (low range)
    Trans. Speed GraphicControls the maximum speed while in transport (high range)
    Smart Power GraphicTurns Smart Power on and off
    Counterbalance GraphicControls the amount of counterbalance applied by the cutting units
    Turnaround GraphicTurns Turnaround on and off

    *Only operator-faced text is translated. Faults, Service, and Diagnostics screens are service-faced. Titles are in the selected language, but menu items are in English.

    Graphic Protected under Protected Menus—accessible only by entering PIN

    About
    Menu ItemDescription
    ModelLists the model number of the machine
    SNLists the serial number of the machine
    S/W RevLists the software revision of the primary controller

    Protected Menus

    There are 6 operating configuration settings that are adjustable within the Settings Menu of the InfoCenter: auto idle, maximum mowing ground speed, maximum transport ground speed, Smart Power, cutting unit counterbalance, and Turnaround. These settings are in the Protected Menu.

    Accessing Protected Menus

    Note: The factory default PIN code for you machine is either 0000 or 1234.If you changed the PIN code and forgot the code, contact your authorized Toro distributor for assistance.

    1. From the MAIN MENU, use the center button to scroll down to the SETTINGS MENU and press the right button (Figure 18).

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    2. In the SETTINGS MENU, use the center button to scroll down to the PROTECTED MENU and press the right button (Figure 19A).

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    3. To enter the PIN code, press the center button until the correct first digit appears, then press the right button to move on to the next digit (Figure 19B and Figure 19C). Repeat this step until the last digit is entered and press the right button once more.

    4. Press the middle button to enter the PIN code (Figure 19D).

      Wait until the red indicator light of the InfoCenter illuminates.

      Note: If the InfoCenter accepts the PIN code and the protected menu is unlocked, the word “PIN” displays in the upper right corner of the screen.

    Note: Rotate the key switch to the OFF position and then to the ON position locks the protected menu.

    You can view and change the settings in the Protected Menu. Once you access the Protected Menu, scroll down to Protect Settings option. Use the right button to change the setting. Setting the Protect Settings to OFF allows you to view and change the settings in the Protected Menu without entering the PIN code. Setting the Protect Settings to ON hides the protected options and requires you to enter the PIN code to change the setting in the Protected Menu. After you set the PIN code, rotate the key switch OFF and back to the ON position to enable and save this feature.

    Viewing and Changing the Protected Menu Settings

    1. In the Protected Menu, scroll down to Protect Settings.

    2. To view and change the settings without entering a PIN code, use the right button to change the Protect Settings to OFF.

    3. To view and change the settings with a PIN code, use the left button to select ON, set the PIN code, and turn the key to the OFF position and then to the ON position.

    Setting the Maximum Allowed Mow Speed

    The selected setting is displayed as an X on the traction-speed bar graph along with the cruise control and pedal stop settings. An X in a bar shows you that the maximum speed is limited by the supervisor (Figure 22 or Figure 24).

    Note: This setting is retained in memory and applied to the traction speed until you change it.

    1. In the Settings Menu, scroll down to Mow Speed and press the right button.

    2. Use the right button to increase the maximum mow speed in 5% increments between 50% and 100%.

    3. Use the center button to decrease the maximum mow speed in 5% increments between 50% and 100%.

    4. Press the left button to exit.

    Setting the Maximum Allowed Transport Speed

    The selected setting is displayed as an X on the traction-speed bar graph along with the cruise control and pedal stop settings. An X in a bar shows you that the maximum speed is limited by the supervisor (Figure 22 or Figure 24).

    Note: This setting is retained in memory and applied to the traction speed until you change it.

    1. In the Settings Menu, scroll down to Transport Speed and press the right button.

    2. Use the right button to increase the maximum transport speed in 5% increments between 50% and 100%.

    3. Use the center button to decrease the maximum transport speed in 5% increments between 50% and 100%.

    4. Press the left button to exit.

    Turning the Smart Power ON/OFF

    1. In the settings menu, scroll down to Smart Power.

    2. Press the right button to switch between ON and OFF.

    3. Press the left button to exit.

    Setting the Counterbalance

    1. In the Settings Menu, scroll down to Counterbalance.

    2. Press the right button to select counterbalance and change between the LOW, MEDIUM, and HIGH settings.

    Actuating Turnaround ON/OFF

    1. In the Settings Menu, scroll down to Turnaround.

    2. Press the right button to switch between ON and OFF.

    3. Press the left button to exit.

    Setting the Acceleration Mode

    1. In the Settings Menu, scroll down to Acceleration.

    2. Press the right button to switch between LOW, MEDIUM, and HIGH.

    3. Press the left button to exit.

    Viewing the Fuel Consumption Rate

    You can view the average fuel consumption rate for the lifetime of the machine in the Service Menu.

    Setting the Service Due Timer

    This resets the service due hours after a scheduled maintenance item is preformed.

    1. In the Service Menu, navigate to the Hours Menu.

    2. Scroll down to the Reset Service Due option and press the right button.

    3. Press the left button to exit.

    During Operation

    During Operation Safety

    General Safety

    • The owner/operator can prevent and is responsible for accidents that may cause personal injury or property damage.

    • Wear appropriate clothing, including eye protection; long pants; substantial, slip-resistant footwear; and hearing protection. Tie back long hair and do not wear loose clothing or loose jewelry.

    • Do not operate the machine while ill, tired, or under the influence of alcohol or drugs.

    • Use your full attention while operating the machine. Do not engage in any activity that causes distractions; otherwise, injury or property damage may occur.

    • Before you start the engine, ensure that all drives are in neutral, the parking brake is engaged, and you are in the operating position.

    • Do not carry passengers on the machine and keep bystanders and children out of the operating area.

    • Operate the machine only in good visibility to avoid holes or hidden hazards.

    • Avoid mowing on wet grass. Reduced traction could cause the machine to slide.

    • Keep your hands and feet away from rotating parts. Keep clear of the discharge opening.

    • Look behind and down before backing up to be sure of a clear path.

    • Use care when approaching blind corners, shrubs, trees, or other objects that may obscure your vision.

    • Stop the blades whenever you are not mowing.

    • Stop the machine, remove the key, and wait for all moving parts to stop before inspecting the attachment after striking an object or if there is an abnormal vibration in the machine. Make all necessary repairs before resuming operation.

    • Slow down and use caution when making turns and crossing roads and sidewalks with the machine. Always yield the right-of-way.

    • Disengage the drive to the cutting unit, shut off the engine, remove the key, and wait for all movement to stop before adjusting the height of cut (unless you can adjust it from the operating position).

    • Operate the engine only in well-ventilated areas. Exhaust gases contain carbon monoxide, which is lethal if inhaled.

    • Never leave a running machine unattended.

    • Before you leave the operator’s position, do the following:

      • Park the machine on a level surface.

      • Disengage the power takeoff and lower the attachments.

      • Engage the parking brake.

      • Shut off the engine and remove the key.

      • Wait for all movement to stop.

    • Operate the machine only in good visibility. Do not operate the machine when there is the risk of lightning.

    • Do not use the machine as a towing vehicle.

    • Use accessories, attachments, and replacement parts approved by Toro only.

    Rollover Protection System (ROPS) Safety

    • The ROPS is an integral and effective safety device.

    • Do not remove any of the ROPS components from the machine.

    • Ensure that the seat belt is attached to the machine.

    • Pull the belt strap over your lap and connect the belt to the buckle on the other side of the seat.

    • To disconnect the seat belt, hold the belt, press the buckle button to release the belt, and guide the belt into the auto-retract opening. Ensure that you can release the belt quickly in an emergency.

    • Check carefully for overhead obstructions and do not contact them.

    • Keep the ROPS in safe operating condition by thoroughly inspecting it periodically for damage and keeping all the mounting fasteners tight.

    • Replace damaged ROPS components. Do not repair or alter them.

    Additional ROPS Safety for Machines with a Cab or a Fixed Roll Bar

    • A cab installed by Toro is a roll bar.

    • Always wear your seat belt.

    Additional ROPS Safety for Machines with a Foldable Roll Bar

    • Keep a folding roll bar in the raised and locked position, and wear your seat belt when operating the machine with the roll bar in the raised position.

    • Lower a folding roll bar temporarily only when necessary. Do not wear the seat belt when the roll bar is folded down.

    • Be aware that there is no rollover protection when a folded roll bar is in the down position.

    • Check the area that you will be mowing and never fold down a folding roll bar in areas where there are slopes, drop-offs, or water.

    Slope Safety

    • Slopes are a major factor related to loss of control and rollover accidents, which can result in severe injury or death. You are responsible for safe slope operation. Operating the machine on any slope requires extra caution.

    • Evaluate the site conditions to determine if the slope is safe for machine operation, including surveying the site. Always use common sense and good judgment when performing this survey.

    • Review the slope instructions listed below for operating the machine on slopes and to determine whether you can operate the machine in the conditions on that day and at that site. Changes in the terrain can result in a change in slope operation for the machine.

    • Avoid starting, stopping, or turning the machine on slopes. Avoid making sudden changes in speed or direction. Make turns slowly and gradually.

    • Do not operate a machine under any conditions where traction, steering, or stability is in question.

    • Remove or mark obstructions such as ditches, holes, ruts, bumps, rocks, or other hidden hazards. Tall grass can hide obstructions. Uneven terrain could overturn the machine.

    • Be aware that operating the machine on wet grass, across slopes, or downhill may cause the machine to lose traction. Loss of traction to the drive wheels may result in sliding and a loss of braking and steering.

    • Use extreme caution when operating the machine near drop-offs, ditches, embankments, water hazards, or other hazards. The machine could suddenly roll over if a wheel goes over the edge or the edge caves in. Establish a safety area between the machine and any hazard.

    • Identify hazards at the base of the slope. If there are hazards, mow the slope with a pedestrian-controlled machine.

    • If possible, keep the cutting unit(s) lowered to the ground while operating on slopes. Raising the cutting unit(s) while operating on slopes can cause the machine to become unstable.

    • Use extreme caution with grass-collection systems or other attachments. These can change the stability of the machine and cause a loss of control.

    Understanding the Operating Characteristics of the Machine

    • This machine has an automotive-style throttle that is controlled by the traction pedal.

    • This machine does not have a separate throttle switch or throttle lever.

    • When you remove your foot from the traction pedal, the machine dynamically brakes to a stop.

    • The pedal controls are optimized to provide a reactive yet stable response, allowing you to maintain consistent control over rough terrain, while still allowing for quick, smooth braking.

    • While transporting, the traction pedal will operate similar to a car and change the engine and traction speed dependent on the traction pedal position.

    • When mowing, the engine speed will automatically raise to high idle.

    • If the engine is at low idle, performing a function like lifting the cutting units or pressing the traction pedal raises the engine speed to a minimum working speed, providing enough power to efficiently perform the function.

    • Limit the machine idle time as recommended for diesel particulate filter (DPF) regeneration. Shut of the machine to prevent extended idling time.

    • The maximum speeds set in the PIN protected menu settings are set by the supervisor to limit the machine’s maximum traction speed.

    • The achievable traction pedal use, cruise control, and pedal stop traction speeds are all limited by the maximum speeds set in the PIN protected menu.

    Operating the Machine

    • When you start the engine and the hydraulic fluid temperature is low, the engine speed automatically increases to optimize operation and warms up the machine. The engine speed automatically returns to low idle after the hydraulic fluid temperature is in a normal operating range.

    • Under normal operating conditions, this machine is intended to operate in the H/L AUTO position on the speed range switch (Figure 20). This position allows the machine to automatically switch between low and high speed ranges, depending on whether the machine is being used for mowing or transporting.

    • When you select the LOW position on the speed range switch (Figure 20), the machine will always operate in low speed range. This setting is preferable for operation in a shop area, loading or unloading from a trailer, climbing steep inclines, or any other operation where the higher traction speeds of the high speed range is not desired.

    • If an obstacle is in the way, lift the cutting units to mow around it.

    • When transporting the machine between work areas, engage the AUTO HI/LOW range, shut off the PTO, and raise the cutting units to the fully upward position. This allows the traction pedal to operate like a car.

    • Always drive slowly in rough areas.

    Practice Operating the Machine

    • To get familiar with the features of the machine, practice operating the machine.

    • Lift the cutting units, disengage the parking brake, press the forward traction pedal, and carefully drive to an open area.

    • Practice driving the machine, because it has a hydrostatic transmission and its features can differ from other turf-maintenance machines.

    • Practice moving forward and reverse, and starting and stopping the machine. To stop the machine, remove your foot from the traction pedal and let it return to NEUTRAL.

      Note: When going downhill in the machine, you may need to use the reverse pedal to stop.

    • Remove your foot from the traction pedal and press down on the brake pedals to stop quickly.

    • Practice driving around obstacles with the cutting units up and down. Be careful when driving between narrow objects so that you do not damage the machine or cutting units.

    Using the High and Low Speed Range Switch

    This machine is equipped with 2 traction speed ranges; low and high. The speed range switch allows you to select the following positions (Figure 20):

    • High/Low Auto range:

      Selecting the H/L AUTO position allows the machine to automatically select between the low and high speed ranges. The H/L AUTO position is comparable to selecting D (drive) in your car with an automatic transmission.

      Note: To prevent potential turf damage, the machine will only shift between low and high range when the traction pedal is in NEUTRAL position and the wheels have stopped moving.

      Note: The cutting units cannot be lowered from the transport position while you drive the machine in the high speed range.

      • When H/L AUTO position is selected and the cutting units are lowered for mowing, the speed range is limited to the low speed range.

      • To get to high speed range, select the H/L AUTO position on the speed range switch, disengage the PTO, and fully raise the cutting units.

      • When H/L AUTO position is selected, the machine will automatically switch between high and low traction ranges based on the position of the cutting units and/or the position of the PTO switch.

    • Low range:

      Selecting the LOW position on the switch keeps the machine in the low speed range at all times. The LOW position is comparable to selecting 2, 1 OR L in your car with an automatic transmission.

      • When the LOW position is selected, the machine only operates in low range.

      • Use the LOW position when loading the machine on a trailer or navigating tight areas like a shop.

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    Using the Traction Pedal

    This pedal controls the forward and reverse speed of the machine and the dynamic braking when you return it to neutral.

    • The traction pedal is an automotive-style throttle—the engine speed and the machine speed respond to the pedal movement.

    • While transporting, the traction pedal will operate similar to a car and change the engine and traction speed dependent on the traction pedal position.

    • While mowing, the engine automatically raises to high idle to optimize mowing performance, and the traction pedal only controls traction speed.

    • The further you push the pedal forward or reverse, the faster the machine moves.

    • To control the machine to a smooth stop while transporting or mowing, use your foot to return the traction pedal to neutral at your desired rate.

    • To engage maximum braking, remove your foot from the traction pedal, allowing it to return to neutral. The machine dynamically brakes to a stop.

    This traction system allows you to customize the acceleration settings for operator comfort and course conditions. Refer to Understanding the Acceleration Mode for changing the settings.

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    Setting the Maximum Traction Speed (Pedal Stop)

    This feature allows the ability to set the maximum speed of the machine when you push the pedal fully forward (Figure 21). You can set a separate speed for the low range and high range (Figure 20).

    • To access this feature, select the InfoCenter middle button from the main screen (Figure 19).

      Note: This feature reverts back to the machine settings when the key is switched off.

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    • This feature allows you to customize the speed settings for your comfort level, or to customize the speed settings to fit the application.

      • You can use this feature to limit the maximum traction speed to 75% while mowing in an area with many trees.

      • If you adjust the maximum traction speed to 75%, the maximum speed of the machine is limited from 0 to 75% and matched to the full stroke of the traction pedal. This setting increases the traction pedal resolution, resulting in improved control. How far you move the traction pedal changes how much the machine's speed changes.

    Using the Brake Pedals

    Important: In emergency braking situations, remove your foot from the traction pedal and then press the brake pedals.

    In the low speed range only, you can use the brakes individually for turning or to improve traction. Perform the following when using the brakes individually:

    • Disconnect the pedal-locking latch (Figure 23).

    • For turning assist, press the corresponding brake pedal to the side you are turning. This allows a tighter turning radius.

      Note: Use the individual brakes carefully, especially on soft or wet grass, because the turf may be torn accidentally.

    • For traction assist, apply light pressure to the brake pedal corresponding to the front tire that is slipping. For example, in some slope conditions, the uphill wheel slips and loses traction. If this situation occurs, press the uphill brake pedal gradually and intermittently until the uphill wheel stops slipping, This action increases the traction on the downhill wheel.

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    Operating the Cruise Control

    Setting the Cruise Control

    The cruise-control switch locks in the cruise control to maintain the desired ground speed. Pressing the rear of the switch turns the cruise control off, the middle position of the switch enables the cruise-control function, and the front of the switch sets the desired ground speed.

    After the cruise control switch is enabled and the speed is set (Figure 24), use the InfoCenter to adjust the speed setting of the cruise control (Figure 17 and Figure 25).

    To disengage the cruise control use the following:

    • When in high speed range, press the reverse traction pedal, press the service brakes, or press the cruise control switch to the OFF positon.

    • When in low speed range, press the reverse traction pedal, press the service brakes, shut off the PTO switch, or press the cruise control switch to the OFF positon.

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    Adjusting the Cruise Control Speed

    After the cruise control switch is enabled on the console Figure 24, use the InfoCenter to adjust the speed setting of the cruise control (Figure 25).

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    Tips for Using the Cruise Control

    • Set a cruising speed for long distances without many obstacles.

    • On rough terrain, use the InfoCenter to control the speed.

    • Use the cruise control for turnarounds as follows:

      1. Set the cruise control to slower speed that you're comfortable and safe at while turning around.

      2. Press the traction pedal to increase the speed for mowing during the mowing pass.

      3. Take your foot off the pedal when turning around for the next mowing pass.

      4. The machine will slow down to the low cruise control setting, allowing you to make an efficient turnaround at a constant speed.

      5. After turning around, use the traction pedal to increase the machine speed back up for the next mowing pass.

    Understanding the Acceleration Mode

    This setting determines how quickly the machine changes traction speed, and effects the deceleration of the machine in the low speed range. Enter the protect menus in the InfoCenter to change the acceleration mode. The acceleration mode has the following 3 positions:

    • Low—low acceleration and deceleration

    • Medium—medium acceleration and deceleration

    • High—highest acceleration and deceleration

    Understanding the Turnaround Mode

    The turnaround mode allows you convenient, 1-touch control to raise the cutting units above the turf while temporarily stopping the blades, allowing you to focus on driving the machine at the end of a mowing pass, or while navigating other obstacles.

    Note: The turnaround mode is a feature in the protected settings.

    • When the turnaround mode is set to the ON position, you momentarily press the lift switch rearward (Figure 6) to automatically raise all cutting units from the float position to a preset height, automatically disengaging the PTO. To resume mowing, press the lift switch forward. All the cutting units lower, and the PTO starts again.

    • When the turnaround mode is set to the OFF position, you manually raise the cutting units from the float position by pressing and holding all lift switches rearward until the cutting units raise to the desired height. For Groundsmaster 4700 machines, press all 3 lift switches to raise all 7 cutting units (Figure 6). The PTO does not disengage until the cutting units raise to the same preset height to which the cutting units raise when the turnaround-mode is set to ON.

    Note: By default, the turnaround mode is ON.

    Understanding Counterbalance

    The counterbalance system maintains hydraulic back pressure on the cutting-unit lift cylinders. The counterbalance system monitors the real-time traction pressure, dynamically changing the lift-cylinder back pressure to optimize traction capability and after-cut appearance. The counterbalance pressure has been set at the factory to an optimal balance of after-cut appearance and traction capability in most turf conditions. Decreasing the counterbalance setting can produce a more stable cutting unit but can decrease the traction capability. Increasing the counterbalance setting can increase the traction capability, but may result in a poor after-cut appearance; refer to Accessing Protected Menus.

    The customizable counterbalance setting controls are as follows:

    • Low—the most amount of weight on cutting units and the lowest weight on the drive wheels

    • Medium—medium weight on cutting units and the drive wheels

    • High—the least amount of weight on cutting units and the highest weight on machine drive wheels

    Understanding Toro Smart Power™

    With Smart Power, the operator does not have to listen to the engine speed in heavy load conditions. Smart Power prevents the engine from bogging down in heavy cutting conditions by automatically controlling the machine speed and optimizing cutting performance.

    Note: By default, the Smart Power feature is ON.

    Starting the Engine

    Important: Bleed the fuel system if any of the following have occurred:

    • The engine has shut off due to lack of fuel.

    • Maintenance has been performed upon the fuel system components.

    1. Remove your foot from the traction pedal and ensure that it is in NEUTRAL. Ensure that the parking brake is engaged.

    2. Turn the key to the RUN position. The glow indicator should illuminate.

    3. When the glow indicator dims, turn the key to the START position.

      Important: Do not run the starter motor more than 15 seconds at a time or premature starter failure may result. If the engine fails to start after 15 seconds, turn the key to the OFF position, check the controls and procedures, wait 15 additional seconds, and repeat the starting procedure.

    4. Release the key immediately when the engine starts and allow it to return to the RUN position.

      When the temperature is less than -7°C (20°F), the starter motor can be run for 30 seconds on then 60 seconds off for 2 attempts.

      Important: Shut off the engine and allow the engine to cool before you check for oil leaks, loose parts, or other malfunctions.

    Shutting Off the Engine

    Important: Allow the engine to idle for 5 minutes before shutting it off after a full-load operation. This allows the turbocharger to cool down before shutting off the engine. Failure to do so may lead to premature turbocharger failure.

    Note: Lower the cutting units to the ground whenever the machine is parked. This relieves the hydraulic load from the system, prevents wear on system parts and also prevents accidental lowering of the cutting units.

    1. Move the PTO switch to the OFF position.

    2. Engage the parking brake.

    3. Rotate the ignition key to the OFF position.

    4. Remove the key to prevent accidental starting.

    Cutting Grass with the Machine

    Note: Cutting grass at a rate that loads the engine promotes DPF regeneration.

    1. Disengage the brake, disengage the PTO, and raise the cutting units.

    2. Select the H/L AUTO or LOW position with the speed range switch. Refer to Using the High and Low Speed Range Switch.

      Note: When the H/L AUTO position is selected and the cutting units are raised, the machine will automatically select the high speed range.

    3. Using the traction pedal like an accelerator pedal on a car, drive the machine to the job site.

    4. Align the machine outside the cutting area for the first cutting pass.

    5. Lower the cutting units with the rocker switch or switches.

    6. Tap the lift switch (GM4500) or middle-lift switch (GM4700) rearward to lift the cutting units to the turnaround position.

      Note: The turnaround position is only available if it is activated under the protected menus in the InfoCenter. Tapping the rocker switch without holding it raises the cutting units to the turn around position and stops the rotation of the blades until the cutting units are lowered.

    7. Pull the PTO switch to engage the cutting units.

      Note: The engine speed automatically rises to high idle when you lower the cutting units and activate the PTO switch.

    8. Using the traction pedal, approach the mowing area slowly and lower the cutting units with the rocker switch once the front cutting units are over the mowing area.

      Note: Practice to ensure the cutting units do not lower early or mow an unintended area.

    9. Begin mowing the area.

    10. When you complete the mowing pass, tap the lift switch (GM4500) or middle-lift switch (GM4700) rearward to lift the cutting units to the turn around position.

    11. Perform a tear-shaped turn to quickly line up for your next pass.

    12. Press the lift switch (GM4500) or middle-lift switch (GM4700) down to automatically lower the cutting units from the turnaround position and continue mowing.

    Operating the Engine-Cooling Fan

    The engine cooling fan is normally controlled by the machine. The machine has the ability to reverse the fan to blow debris off the rear screen. Under normal operating conditions, the machine controls the fan speed and direction based on coolant and hydraulic-fluid temperature, and the fan automatically reverses direction to blow debris off the rear screen.

    You can manually reverse the fan by pressing the 2 outer buttons of the InfoCenter (Figure 26) for 2 seconds—the fan completes a manually initiated reverse cycle. Reverse the fan when the rear screen is clogged or prior to moving the machine into the shop or a storage area.

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    Operating Tips

    Changing Mowing Patterns

    Change mowing patterns often to minimize a poor after-cut appearance from repeatedly mowing in the same direction.

    Resolving After-Cut Appearance

    Refer to the After-cut Appearance Troubleshooting Guide available at www.Toro.com.

    Using Proper Mowing Techniques

    • To begin cutting, engage the cutting units, then approach the mowing area slowly. Once the front cutting units are over the mowing area, lower the cutting units.

    • To achieve the professional straight-line cut and striping that is desirable for some applications, find a tree or other object in the distance and drive straight toward it.

    • As soon as the front cutting units reach the edge of the mowing area, lift the cutting units, and perform a teardrop-shaped turn to quickly line up for your next pass.

    • Bolt-in mulching baffles are available for the cutting units. The mulching baffles perform well when you maintain turf on a regular schedule to avoid removing more than 25 mm (1 inch) of growth per cutting. When you cut too much growth with the mulching baffles installed, the after-cut appearance may deteriorate and the observed power to cut the turf increases. The mulching baffles also perform well for shredding leaves in the fall.

    Selecting the Proper Height-of-Cut Setting to Suit Conditions

    Remove no more than approximately 25 mm (1 inch), or 1/3 of the grass blade when cutting. In exceptionally lush and dense grass, you may need to raise your height-of-cut setting.

    Mowing with Sharp Blades

    A sharp blade cuts cleanly and without tearing or shredding the grass blades like a dull blade. Tearing and shredding causes the grass to turn brown at the edges, which impairs growth and increases susceptibility to diseases. Ensure that the blade is in good condition and that there is a full sail; refer to Servicing the Blade Plane.

    Checking the Condition of the Cutting Unit

    Ensure that the cutting chambers are in good condition. Straighten any bends in the chamber components to ensure correct blade tip/chamber clearance. Ensure all rollers and pivoting joints do not have play in them to prevent turf damage or poor after cut appearance.

    Maintaining the Machine after Mowing

    After mowing, thoroughly wash the machine with a garden hose with no nozzle to avoid contamination and damage to the seals and bearings caused by excessive water pressure. Ensure that the radiator and oil cooler are kept free of dirt or grass clippings. After cleaning, inspect the machine for possible hydraulic-fluid leaks, damage, or wear to the hydraulic and mechanical components, and check the cutting-unit blades for sharpness.

    After Operation

    General Safety

    • Shut off the engine, remove the key, and wait for all movement to stop before you leave the operator’s position. Allow the machine to cool before adjusting, servicing, cleaning, or storing it.

    • Clean grass and debris from the cutting units, mufflers, and engine compartment to help prevent fires. Clean up oil or fuel spills.

    • If the cutting units are in the transport position, use the positive mechanical lock (if available) before you leave the machine unattended.

    • Allow the engine to cool before storing the machine in any enclosure.

    • Remove the key and shut off the fuel (if equipped) before storing or hauling the machine.

    • Never store the machine or fuel container where there is an open flame, spark, or pilot light, such as on a water heater or on other appliances.

    • Maintain and clean the seat belt(s) as necessary

    Using the Cutting-Unit Storage Lanyard

    Use the cutting-unit storage lanyards to prevent the forward outer cutting units from settling when the machine is parked overnight or if it is being stored for an extended period. You can also use the cutting-unit storage lanyards to prevent the cutting units from settling while the machine is transporting between mowing tasks.

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    Securing the Cutting Units

    1. Ensure that the PTO is disengaged.

    2. Park the machine on a level surface.

    3. Engage the parking brake.

    4. Fully raise the cutting units.

    5. Align the lanyard to the carrier shaft of the lift arm for the forward outer-cutting unit (Figure 28).

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    6. Slip the loop in the lanyard over the carrier shaft until the lanyard is fully seated in the groove in the shaft (Figure 28).

    7. Repeat steps 5 and 6 for the forward outer-cutting unit at the other side of the machine.

    Important: Remove the lanyards from the carrier shafts before lowering the cutting units

    Stowing the Lanyards

    Note: Stow the lanyards when you are not using them.

    1. Ensure that the PTO is disengaged.

    2. Park the machine on a level surface.

    3. Engage the parking brake.

    4. With the cutting units lowered, slip the loop of the lanyard into the slot in the reinforcement plate of the roller support (Figure 29).

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    Using the Transport Latches

    Groundsmaster 4700 Only

    Use the 2 rear-transport latches for the No. 6 and 7 cutting units (Figure 10) from settling when the machine is parked overnight, when moving the machine over long distances, rough terrain, when transporting, or storing the machine.

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    Hauling the Machine

    • Remove the key and shut off the fuel (if equipped) before storing or hauling the machine.

    • Use care when loading or unloading the machine into a trailer or a truck.

    • Use full-width ramps for loading the machine into a trailer or a truck.

    • Tie the machine down securely.

    Pushing or Towing the Machine

    In an emergency, you can move the machine forward by actuating the bypass function in the variable-displacement hydraulic pump and pushing or towing the machine.

    Important: Do not push or tow the machine faster than 3 to 4.8 km/h (2 to 3 mph). If you push or tow at a faster speed, internal transmission damage may occur.The relief valves must be open whenever you push or tow the machine.

    1. Open the hood and locate the relief valves (Figure 31) on the top of pump, behind the battery/storage boxes.

    2. Rotate each valve 3 turns counter-clockwise to open and allow the fluid to bypass internally.

      Note: Do not open the valve more than 3 turns. Because fluid is bypassed, you can move the machine slowly without damaging the transmission.

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    3. Push or tow the machine forward.

      Important: If you must push or tow the machine in reverse, refer to the Reverse Tow Kit (Part No. 136-3620).

    4. Finish pushing or towing the machine and close the relief valves. Torque the valve to 70 N∙m (52 ft-lb).

    Locating the Tie-Down Points

    Note: Use properly-rated DOT-approved straps in 4 corners to tie down the machine.

    • On each side of the frame by the operator’s platform (Figure 33)

    • On the rear bumper (Figure 33)

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    Maintenance

    Note: Determine the left and right sides of the machine from the normal operating position.

    Important: Refer to your engine owner’s manual for additional maintenance procedures.

    Note: Download a free copy of the electrical or hydraulic schematic by visiting www.Toro.com and searching for your machine from the Manuals link on the home page.

    Maintenance Safety

    • Before you leave the operator’s position, do the following:

      • Park the machine on a level surface.

      • Disengage the power takeoff and lower the attachments.

      • Engage the parking brake.

      • Shut off the engine and remove the key.

      • Wait for all movement to stop.

    • If you leave the key in the switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the switch before you perform any maintenance.

    • Allow machine components to cool before performing maintenance.

    • If the cutting units are in the transport position, use the positive mechanical lock (if equipped) before you leave the machine unattended.

    • If possible, do not perform maintenance while the engine is running. Keep away from moving parts.

    • Support the machine with jack stands whenever you work under the machine.

    • Carefully release pressure from components with stored energy.

    • Keep all parts of the machine in good working condition and all hardware tightened, especially blade-attachment hardware.

    • Replace all worn or damaged decals.

    • To ensure safe, optimal performance of the machine, use only genuine Toro replacement parts. Replacement parts made by other manufacturers could be dangerous, and such use could void the product warranty.

    Recommended Maintenance Schedule(s)

    Maintenance Service IntervalMaintenance Procedure
    After the first hour
  • Torque the wheel lug nuts.
  • After the first 10 hours
  • Torque the wheel lug nuts.
  • After the first 50 hours
  • Change the front planetary-gear oil.
  • After the first 200 hours
  • Change the rear-axle lubricant.
  • Before each use or daily
  • Check the tire pressure.
  • Check the interlock switches.
  • Check the blade-stopping time.
  • Check the engine-oil level.
  • Drain water or other contaminants from the fuel filter/water separator
  • Check the rear axle and rear-axle gearbox for leaks.
  • Check level of coolant at the beginning of each day.
  • Remove debris from the engine area, oil cooler, and radiator (clean them more frequently in dirty conditions).
  • Check the hydraulic-fluid level.
  • Inspect the hydraulic lines and hoses for leaks, kinked lines, loose mounting supports, wear, loose fittings, weather deterioration, and chemical deterioration.
  • Clean the machine.
  • Clean and maintain the seat belt.
  • Every 50 hours
  • Grease the bearings and bushings(also after every washing).
  • Check the battery condition.
  • Every 100 hours
  • Check the condition and tension of the alternator belt.
  • Every 200 hours
  • Torque the wheel lug nuts.
  • Every 250 hours
  • Change the engine oil and filter.
  • Every 400 hours
  • Service the air cleaner (earlier if the air-cleaner indicator shows red, and more frequently in extremely dirty or dusty conditions).
  • Inspect the fuel lines and connections.
  • Replace the fuel-filter canister.
  • Replace the engine fuel filter.
  • Check for end-play in the planetary drives.
  • Check the planetary-gear-drive oil level(check if you notice external leakage).
  • Check the rear-axle lubricant.
  • Check the rear-axle-gear-box lubricant.
  • Every 800 hours
  • Drain and clean the fuel tank.
  • Change the front planetary-gear oilor yearly, whichever comes first.
  • Change the rear-axle lubricant.
  • Check the rear wheel toe-in.
  • If you are not using the recommended hydraulic fluid or have ever filled the reservoir with an alternative fluid, change the hydraulic fluid.
  • If you are not using the recommended hydraulic fluid or have ever filled the reservoir with an alternative fluid, replace the hydraulic filter (sooner if the service interval indicator is in the red zone).
  • Every 1,000 hours
  • If you are using the recommended hydraulic fluid, replace the hydraulic filter (sooner if the service interval indicator is in the red zone).
  • Every 2,000 hours
  • If you are using the recommended hydraulic fluid, change the hydraulic fluid.
  • Before storage
  • Drain and clean the fuel tank.
  • Check the tire pressure.
  • Check all fasteners.
  • Grease or oil all grease fittings and pivot points.
  • Paint chipped surfaces.
  • Every 2 years
  • Drain and flush the hydraulic tank.
  • Replace the hydraulic hoses.
  • Pre-Maintenance Procedures

    Lifting the Machine

    Use the following as points to lift the machine:

    Front of the machine—at the frame of the machine, forward of the wheel-drive motors (Figure 34)

    Important: Do not support the machine at the wheel-drive motors. Keep the lifting equipment clear of hydraulic tubing and hoses.

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    Rear of the machine—at the center of the axle (Figure 35)

    Locate the jackstands of the specified capacity at both sides of the gear case and under the axle.

    Important: Do not support the machine at the tie rod.

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    Opening the Hood

    Tilt the hood to access the chassis as shown in Figure 36.

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    Accessing the Hydraulic Lift Compartment

    Tilt the seat to access the hydraulic lift compartment as shown in Figure 37.

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    Lubrication

    Greasing the Bearings and Bushings

    Maintenance Service IntervalMaintenance Procedure
    Every 50 hours
  • Grease the bearings and bushings(also after every washing).
  • Grease specification: No. 2 lithium grease

    The grease fitting locations and quantities are as follows:

    • Brake-shaft pivot bearings (5) as shown in Figure 38

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    • Rear-axle-pivot bushings (2) as shown in Figure 39

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    • Steering-cylinder ball joints (2) as shown in Figure 40

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    • Tie-rod ball joints (2) as shown in Figure 40

    • Kingpin bushings (2) as shown in Figure 40

      Important: Lubricate the top fitting on the kingpin no more than annually (2 pumps).

    • Lift-arm bushings (1 per cutting unit) as shown in Figure 41

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    • Lift-cylinder bushings (2 per cutting unit) as shown in Figure 41

    • Cutting-unit spindle-shaft bearings (2 per cutting unit) as shown in Figure 42

      Note: You can use either fitting, whichever is more accessible. Pump grease into the fitting until a small amount appears at the bottom of the spindle housing (under the cutting unit).

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    • Cutting-unit carrier-arm bushings (1 per cutting unit) as shown in Figure 42

    • Rear roller bearings (2 per cutting unit) as shown in Figure 43

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      Important: Make sure that the grease groove in each roller mount aligns with the grease hole in each end of the roller shaft. To help align the groove and the hole, there is also an alignment mark on 1 end of the roller shaft.

    Engine Maintenance

    Engine Safety

    • Shut off the engine and remove the key before checking the oil or adding oil to the crankcase.

    • Do not change the governor speed or overspeed the engine.

    Servicing the Air Cleaner

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Service the air cleaner (earlier if the air-cleaner indicator shows red, and more frequently in extremely dirty or dusty conditions).
  • Check the air-cleaner body for damage which could cause an air leak. Replace it if it is damaged. Check the whole intake system for leaks, damage, or loose hose clamps.

    Service the air-cleaner filter only when the service indicator (Figure 44) requires it. Changing the air filter before it is necessary only increases the chance of dirt entering the engine when you remove the filter.

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    Important: Ensure that the cover is seated correctly and seals with the air-cleaner body.

    1. Replace the air cleaner (Figure 45).

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      Note: Do not clean a used element because cleaning it can damage the filter media.

      Important: Never attempt to clean the safety filter (Figure 46). Replace the safety filter after every 3 primary filter services.

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    2. Reset the indicator (Figure 44) if it shows red.

    Servicing the Engine Oil

    Oil Specification

    Use high-quality, low-ash engine oil that meets or exceeds the following specifications:

    • API service category CJ-4 or higher

    • ACEA service category E6

    • JASO service category DH-2

    Important: Using engine oil other than API CJ-4 or higher, ACEA E6, or JASO DH-2 may cause the diesel particulate filter to plug or cause engine damage.

    Use the following engine oil viscosity grade:

    • Preferred oil: SAE 15W-40 (above 0°F)

    • Alternate oil: SAE 10W-30 or 5W-30 (all temperatures)

    Toro Premium Engine Oil is available from your authorized Toro distributor in either 15W-40 or 10W-30 viscosity grades. See the Parts Catalog for part numbers.

    Checking the Engine-Oil Level

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Check the engine-oil level.
  • The engine is shipped with oil in the crankcase; however, the oil level must be checked before and after the engine is first started.

    Important: Check the engine oil daily. If the engine-oil level is above the Full mark on the dipstick, the engine oil may be diluted with fuel;If the engine oil level is above the Full mark, change the engine oil.

    The best time to check the engine oil is when the engine is cool before it has been started for the day. If it has already been run, allow the oil to drain back down to the sump for at least 10 minutes before checking. If the oil level is at or below the Add mark on the dipstick, add oil to bring the oil level to the Full mark. Do not overfill the engine with oil.

    Important: Keep the engine-oil level between the upper and lower limits on the dipstick; the engine may fail if you run it with too much or too little oil.

    Check the engine-oil level; refer to Figure 47.

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    Note: When using different oil, drain all old oil from the crankcase before adding new oil.

    Crankcase Oil Capacity

    Approximately 5.7 L (6 US qt) with the filter.

    Changing the Engine Oil and Filter

    Maintenance Service IntervalMaintenance Procedure
    Every 250 hours
  • Change the engine oil and filter.
  • Note: To reset the service due indicator in the Infocenter; refer to Setting the Service Due Timer.

    1. Start the engine and let it run 5 minutes to allow the oil to warm up.

    2. Park the machine on a level surface, engage the parking brake, shut off the engine, and remove the key.

    3. Replace the engine oil and filter (Figure 48).

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    4. Add oil to the crankcase; refer to theCrankcase Oil Capacity and Checking the Engine-Oil Level.

    Fuel System Maintenance

    Danger

    Under certain conditions, diesel fuel and fuel vapors are highly flammable and explosive. A fire or explosion from fuel can burn you and others and can cause property damage.

    • Use a funnel to fill the fuel tank outdoors, in an open area, when the engine is off and is cold. Wipe up any fuel that spills.

    • Do not fill the fuel tank completely full. Add fuel to the fuel tank until the level is 6 to 13 mm (1/4 to 1/2 inch) below the bottom of the filler neck. This empty space in the tank allows the fuel to expand.

    • Never smoke when handling fuel, and stay away from an open flame or where fuel fumes may be ignited by a spark.

    • Store fuel in a clean, safety-approved container and keep the cap in place.

    Draining the Fuel Tank

    Maintenance Service IntervalMaintenance Procedure
    Every 800 hours
  • Drain and clean the fuel tank.
  • Before storage
  • Drain and clean the fuel tank.
  • In addition to the listed service interval, drain and clean the tank if the fuel system becomes contaminated or if you are storing the machine for an extended period. Use clean fuel to flush out the tank.

    Inspecting the Fuel Lines and Connections

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Inspect the fuel lines and connections.
  • Inspect the fuel lines for deterioration, damage, or loose connections.

    Servicing the Fuel-Water Separator

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    Draining Water from the Fuel/Water Separator

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Drain water or other contaminants from the fuel filter/water separator
  • Drain water from the fuel/water separator as shown in (Figure 50).

    Prime the filter and the lines to the high pressure pump after draing the water; refer to Priming the Fuel System.

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    Replacing the Fuel-Filter Canister

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Replace the fuel-filter canister.
  • Replace the fuel-filter canister as shown in Figure 51.

    Prime the filter and the lines to the high pressure pump after replacing the filter; refer to Priming the Fuel System.

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    Servicing the Fuel Filter

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Replace the engine fuel filter.
    1. Clean the area around the fuel-filter head (Figure 52).

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    2. Remove the filter and clean the filter head mounting surface (Figure 52).

    3. Lubricate the filter gasket with clean lubricating engine oil; refer to the engine owner's manual for additional information.

    4. Install the dry filter canister, by hand, until the gasket contacts the filter head, then rotate it an additional 1/2 turn.

    5. Prime the filter and the lines to the high pressure pump; refer to Priming the Fuel System.

    6. Start the engine and inspect for leaks around the filter head again.

    Cleaning the Fuel-Pickup Tube Screen

    The fuel-pickup tube, located inside the fuel tank, is equipped with a screen to help prevent debris from entering the fuel system. Remove the fuel-pickup tube and clean the screen as required.

    1. Remove the hose clamp that secures the fuel supply hose to the fitting of the fuel-pickup tube (Figure 53).

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    2. Separate the hose from the fitting (Figure 53).

    3. Lift the fuel-pickup tube from the fuel tank (Figure 53).

      Note: Lift the tube straight from the bushing in the tank.

    4. Clean any debris from the screen at the end of the fuel-pickup tube (Figure 53).

    5. Insert the fuel-pickup tube through the rubber bushing and into the tank (Figure 53).

      Note: Ensure that the fuel-pickup tube is fully seated into the rubber bushing.

    6. Install the supply hose onto the fitting of the fuel-pickup tube, and secure the hose with the hose clamp that you removed in step 1.

    Priming the Fuel System

    Prime the fuel system before starting the engine for the first time, after running out of fuel, or after fuel system maintenance (e.g., draining the filter/water separator, replacing a fuel hose).

    To prime the fuel system, perform the following steps:

    1. Ensure that fuel is in the fuel tank.

    2. Perform the following steps to prime the filter and the lines to the high pressure pump to prevent wear or damage to the pump:

      1. Cycle the key to the ON position for 15 to 20 seconds.

      2. Cycle the key to the OFF position for 30 to 40 seconds.

        Note: This allows the ECU to power down.

      3. Cycle the key to the ON position for 15 to 20 seconds.

      4. Inspect for leaks around the filter and hoses.

    Important: Do not use the engine starter motor to crank the engine to prime the fuel system.

    Electrical System Maintenance

    Electrical System Safety

    • Disconnect the battery before repairing the machine. Disconnect the negative terminal first and the positive last. Connect the positive terminal first and the negative last.

    • Charge the battery in an open, well-ventilated area, away from sparks and flames. Unplug the charger before connecting or disconnecting the battery. Wear protective clothing and use insulated tools.

    Checking the Battery Condition

    Maintenance Service IntervalMaintenance Procedure
    Every 50 hours
  • Check the battery condition.
  • Important: Before welding on the machine, disconnect the negative cable from the battery to prevent damage to the electrical system. Also, you must disconnect the engine, InfoCenter, and machine controllers before welding on the machine.

    Note: Keep the terminals and the entire battery case clean, because a dirty battery discharges slowly. To clean the battery, wash the entire case with a solution of baking soda and water. Rinse with clear water. Coat the battery posts and cable connectors with Grafo 112X (skin-over) grease (Toro Part No. 505-47) or petroleum jelly to prevent corrosion.

    Charging and Connecting the Battery

    1. Loosen the latch for the cover of the right storage box and raise the cover (Figure 56).

      Danger

      Battery electrolyte contains sulfuric acid, which is fatal if consumed and causes severe burns.

      • Do not drink electrolyte and avoid contact with skin, eyes, or clothing. Wear safety glasses to shield your eyes and rubber gloves to protect your hands.

      • Fill the battery where clean water is always available for flushing the skin.

    2. Remove the rubber boot from the positive terminal and inspect the battery.

    3. Remove the negative cable (black) from the negative (-) terminal and the positive cable (red) from the positive (+) terminal of the battery (Figure 54).

      Warning

      Incorrect battery cable routing could damage the machine and cables, causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury.

      • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable.

      • Always connect the positive (red) battery cable before connecting the negative (black) cable.

      Warning

      Battery terminals or metal tools could short against metal components, causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury.

      • When removing or installing the battery, do not allow the battery terminals to touch any metal parts of the machine.

      • Do not allow metal tools to short between the battery terminals and metal parts of the machine.

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    4. Connect a 3 to 4 A battery charger to the battery posts. Charge the battery at a rate of 3 to 4 A for 4 to 8 hours.

      Warning

      Charging the battery produces gasses that can explode.

      Never smoke near the battery and keep sparks and flames away from battery.

    5. When the battery is charged, disconnect the charger from the power outlet and battery posts.

    6. Install the positive cable (red) to the positive (+) terminal and the negative cable (black) to the negative (-) terminal of the battery (Figure 54).

    7. Secure the cables to the posts with bolts and nuts.

      Note: Make sure that the positive (+) terminal is all the way on the post and the cable is positioned snug to the battery. The cable must not contact the battery cover.

    8. Coat both battery connections with Grafo 112X (skin-over) grease, Part No. 505-47, petroleum jelly, or light grease to prevent corrosion.

    9. Slide the rubber boot over the positive terminal.

    10. Close the console panel and secure the latch.

    Locating the Fuses

    The fuse block for the machine is located in the right storage box

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    1. Loosen the latch for the cover of the right storage box and raise the cover (Figure 56) to expose the fuse block (Figure 57).

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    2. Replace the open fuse(s) as needed (Figure 57).

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    3. Close the cover of the right storage box and secure the cover with the latch (Figure 56).

    Drive System Maintenance

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    Checking for End-Play in the Planetary Drives

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Check for end-play in the planetary drives.
  • There should be no end-play in the planetary drives/drive wheels (i.e., the wheels should not move when you pull or push them in a direction parallel to the axle).

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Chock the rear wheels and raise the front of machine, supporting the front axle/frame on jack stands.

      Danger

      A machine on a jack may be unstable and slip off the jack, injuring anyone beneath it.

      • Do not start the engine while the machine is on a jack.

      • Always remove the key from the switch before getting off the machine.

      • Block the tires when you are raising the machine with a jack.

      • Support the machine with jack stands.

    3. Grasp 1 of the front drive wheels and push/pull it toward and away from the machine, noting any movement.

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    4. Repeat step 3 for the other drive wheel.

    5. If either wheel moves, contact your authorized Toro distributor to have the planetary drive rebuilt.

    Checking the Planetary Gear-Drive Lubricant

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Check the planetary-gear-drive oil level(check if you notice external leakage).
  • Lubricant Specification: high quality SAE 85W-140 gear lubricant

    1. Park the machine on level surface, position the wheel so that the fill plug is at the 12 o'clock position, the check plug is at 3 o'clock position, and the drain plug is at the 6 o'clock position (Figure 60).

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    2. Remove the check plug at the 3 o’clock position (Figure 60).

      The oil level should be at the bottom of the check-plug hole.

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    3. If the oil level is low, remove the fill plug at the 12 o’clock position and add oil until it begins to flow out of the hole at the 3 o’clock position.

    4. Check the O-ring for the plug(s) for wear or damage.

      Note: Replace the O-ring(s) as needed.

    5. Install the plug(s).

    6. Repeat steps 1 through 5 on the planetary gear assembly at the other side of the machine.

    Changing the Planetary-Gear-Drive Oil

    Maintenance Service IntervalMaintenance Procedure
    After the first 50 hours
  • Change the front planetary-gear oil.
  • Every 800 hours
  • Change the front planetary-gear oilor yearly, whichever comes first.
  • Lubricant specification: high quality SAE 85W-140 gear lubricant

    Planetary and brake housing lubrication capacity: 0.65 L (22 fl oz)

    Draining the Planetary-Gear-Drive

    1. Park the machine on level surface, position the wheel so that the fill plug is at the 12 o'clock position, the check plug is at 3 o'clock position, and the drain plug is at the 6 o'clock position; refer to Figure 60 in Checking the Planetary Gear-Drive Lubricant.

    2. Remove the fill plug at the 12 o’clock position and the check plug at the 3 o’clock position (Figure 62).

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    3. Place a drain pan under the planetary hub, remove the drain plug at the 6 o’clock position, and allow the oil to fully drain (Figure 62).

    4. Check the O-rings for the fill, check, and drain plugs for wear or damage.

      Note: Replace the O-ring(s) as needed.

    5. Install the drain plug into the drain hole of the planetary housing (Figure 62).

    6. Place a drain pan under the brake housing, remove the drain plug, and allow the oil to fully drain (Figure 63).

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    7. Check the O-ring for the plug for wear or damage and install the drain plug into the brake housing.

      Note: Replace the O-ring as needed.

    Filling the Planetary-Gear-Drive with Lubricant

    1. Through the fill-plug hole, slowly fill the planetary with 0.65 L (22 fl oz) of high quality SAE 85W-140 wt gear lube.

      Important: If the planetary fills before the 0.65 L (22 fl oz) of oil is added, wait 1 hour or install the plug and move the machine approximately ten feet to distribute the oil through the brake system. Then, remove the plug and add the remaining oil.

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    2. Install the fill plug and the check plug.

    3. Wipe clean the planetary and brake housings (Figure 65).

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    4. Repeat steps 1 through 7 in Draining the Planetary-Gear-Drive and steps 1 through 3 in this procedure for the planetary/brake assembly at the other side of the machine.

    Checking the Rear Axle and Gearbox for Leaks

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Check the rear axle and rear-axle gearbox for leaks.
  • Visually inspect the rear axle and rear-axle gearbox for leaks.

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    Checking the Rear-Axle Lubricant

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Check the rear-axle lubricant.
  • The rear axle is filled with SAE 85W-140 gear lube. The capacity is 2.4 L (80 fl oz). Visually inspect for leaks daily.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Remove a check plug from 1 end of the axle and ensure that the lubricant is up to the bottom of the hole (Figure 67).

      Note: If the level is low, remove the fill plug and add enough lubricant to bring the level up to the bottom of the check-plug holes.

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    Changing the Rear-Axle Lubricant

    Maintenance Service IntervalMaintenance Procedure
    After the first 200 hours
  • Change the rear-axle lubricant.
  • Every 800 hours
  • Change the rear-axle lubricant.
  • Lubricant specification: high-quality SAE 85W-140 gear lubricant

    Axle capacity: 2.4 L (80 fl oz)

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Clean the area around the 3 drain plugs—1 on each end and 1 in the center (Figure 68).

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    3. Remove the oil-level check plugs and the main-axle-vent cap to ease draining the gear lubricant.

    4. Remove the drain plugs and allow the gear lubricant to drain into the pans.

    5. Install the plugs.

    6. Remove a check plug and fill the axle with approximately 2.4 L (80 fl oz) of 85W-140 gear lube or until the lubricant is up to the bottom of the hole.

    7. Install the check plug.

    Checking the Rear-Axle-Gearbox Lubricant

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Check the rear-axle-gear-box lubricant.
  • The gear box is filled with SAE 85W-140 gear lube. The capacity is 0.5 L (16 fl oz). Visually inspect for leaks daily.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Remove the check/fill plug from the left side of the gear box and ensure that lubricant is up to the bottom of the hole (Figure 69).

      Note: If the level is low, add enough lubricant to bring the level up to the bottom of the hole.

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    Checking the Rear Wheel Toe-In

    Maintenance Service IntervalMaintenance Procedure
    Every 800 hours
  • Check the rear wheel toe-in.
    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Measure the center-to-center distance (at axle height) at the front and rear of the steering tires (Figure 70).

      Note: The front measurement must be 3 mm (1/8 inch) less than the rear measurement.

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    3. To adjust, remove the cotter pin and nut from either tie rod ball joint (Figure 71). Remove the tie-rod ball joint from the axle-case support.

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    4. Loosen the clamps at both ends of the tie rods (Figure 71).

    5. Rotate the detached ball joint inward or outward 1 complete revolution and tighten the clamp at the loose end of the tie rod.

    6. Rotate the entire tie-rod assembly the same direction (inward or outward) 1 complete revolution and tighten the clamp at the connected end of the tie rod.

    7. Install the ball joint in the axle-case support, tighten the nut finger-tight, and measure the toe-in.

    8. Repeat procedure if necessary.

    9. Tighten the nut and install a new cotter pin when the adjustment is correct.

    10. Check the opposite tie-rod and repeat the procedure if necessary.

    Cooling System Maintenance

    Cooling System Safety

    • Swallowing engine coolant can cause poisoning; keep out of reach from children and pets.

    • Discharge of hot, pressurized coolant or touching a hot radiator and surrounding parts can cause severe burns.

      • Always allow the engine to cool at least 15 minutes before removing the radiator cap.

      • Use a rag when opening the radiator cap, and open the cap slowly to allow steam to escape.

    • Do not operate the machine without the covers in place.

    • Keep your fingers, hands, and clothing clear of the rotating fan and drive belt.

    Coolant Specification

    The coolant reservoir is filled at the factory with a 50/50 solution of water and ethylene glycol base extended-life coolant.

    Important: Use only commercially available coolants that meet the specifications listed in the Extended Life Coolant Standards Table.Do not use conventional (green) inorganic-acid technology (IAT) coolant in your machine. Do not mix conventional coolant with extended-life coolant.

    Coolant Type Table

    Ethylene-Glycol Coolant Type

    Corrosion Inhibitor Type

    Extended-life antifreeze

    Organic-acid technology (OAT)

    Important: Do not rely on the color of the coolant to identify the difference between conventional (green) inorganic-acid technology (IAT) coolant and extended-life coolant.Coolant manufacturers may dye extended-life coolant in one of the following colors: red, pink, orange, yellow, blue, teal, violet, and green. Use coolant that meets the specifications in the Extended Life Coolant Standards Table.

    Extended Life Coolant Standards

    ATSM International

    SAE International

    D3306 and D4985

    J1034, J814, and 1941

    Important: Coolant concentration should be a 50/50 mixture of coolant to water.

    • Preferred: When mixing coolant from a concentrate, mix it with distilled water.

    • Preferred option: If distilled water is not available, use a pre-mix coolant instead of a concentrate.

    • Minimum requirement: If distilled water and pre-mix coolant are not available, mix concentrated coolant with clean drinkable water.

    Checking the Cooling System

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Check level of coolant at the beginning of each day.
  • Coolant specification: 50/50 mixture of water and ethylene glycol antifreeze

    Cooling system capacity: 8.5 L (9 US qt).

    Danger

    The rotating fans and drive belts can cause personal injury.

    • Do not operate the machine without the guards in place.

    • Keep your fingers, hands, and clothing clear of the rotating fan and drive belt.

    • Shut off the engine and remove the key before performing maintenance.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Carefully remove the radiator cap.

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    3. Check the coolant level in the radiator. The radiator should be filled to the top of the filler neck and the expansion tank filled to the FULL mark (Figure 72).

    4. If the coolant is low, add a 50/50 mixture of water and ethylene glycol anti-freeze. Do not use water only or alcohol/methanol based coolants.

    5. Install the radiator cap and expansion-tank cap.

    Cleaning the Cooling System

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Remove debris from the engine area, oil cooler, and radiator (clean them more frequently in dirty conditions).
  • This machine is equipped with a hydraulically driven fan drive system that automatically (or manually) reverses to reduce oil cooler/radiator and screen debris buildup. While this feature can help reduce the time required to clean oil cooler/radiator, it does not eliminate the need for routine cleaning. Periodic cleaning and inspection of the radiator/cooler is still required.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Allow the machine to cool down; refer to Maintenance Safety and Cooling System Safety.

    3. Unlatch and swing open the rear screen (Figure 73).

      Note: To remove the screen, lift it off the hinge pins.

    4. Clean the screen thoroughly of all debris.

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    5. Thoroughly clean both sides of the oil cooler and the radiator with compressed air (Figure 74).

      Note: Start from the front and blow the debris out toward the back. Then clean from the back side and blow toward the front. Repeat procedure several times until you remove all chaff and debris.

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      Important: Cleaning the oil cooler/radiator with water promotes premature corrosion damage to components and compacts debris.

    6. Close the rear screen and secure it with the latch.

    Brake Maintenance

    Adjusting the Service Brakes

    Adjust the service brakes when there is more than 25 mm (1 inch) of free travel of the brake pedal, or when the brakes do not work effectively. Free travel is the distance the brake pedal moves before you feel braking resistance.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Release the locking latch from the brake pedals so that both pedals work independently of each other.

    3. To reduce free travel of the brake pedals, tighten the brakes as follows:

      1. Loosen the front nut on the threaded end of the brake cable (Figure 75).

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      2. Tighten the rear nut to move the cable rearward until the brake pedals have 13 to 25 mm (1/2 to 1 inch) of free travel.

      3. Tighten the front nuts after the brakes are adjusted correctly.

    Belt Maintenance

    Servicing the Alternator Belt

    Maintenance Service IntervalMaintenance Procedure
    Every 100 hours
  • Check the condition and tension of the alternator belt.
  • Proper tension of the belt allows 10 mm (3/8 inch) of deflection when a force of 4.5 kg (10 lb) is applied on the belt midway between the pulleys.

    If the deflection is not 10 mm (3/8 inch), loosen the alternator-mounting bolts (Figure 76).

    Note: Increase or decrease the alternator-belt tension and tighten the bolts. Check the deflection of the belt again to ensure that the tension is correct.

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    Hydraulic System Maintenance

    Hydraulic System Safety

    • Seek immediate medical attention if fluid is injected into skin. Injected fluid must be surgically removed within a few hours by a doctor.

    • Ensure that all hydraulic-fluid hoses and lines are in good condition and all hydraulic connections and fittings are tight before applying pressure to the hydraulic system.

    • Keep your body and hands away from pinhole leaks or nozzles that eject high-pressure hydraulic fluid.

    • Use cardboard or paper to find hydraulic leaks.

    • Safely relieve all pressure in the hydraulic system before performing any work on the hydraulic system.

    Servicing the Hydraulic Fluid

    Hydraulic Fluid Specifications

    The reservoir is filled at the factory with high-quality hydraulic fluid. Check the level of the hydraulic fluid before you first start the engine and daily thereafter; refer to Checking the Hydraulic-Fluid Level.

    Recommended hydraulic fluid: Toro PX Extended Life Hydraulic Fluid; available in 19 L (5 US gallon) pails or 208 L (55 US gallon) drums.

    Note: A machine using the recommended replacement fluid requires less frequent fluid and filter changes.

    Alternative hydraulic fluids: If Toro PX Extended Life Hydraulic Fluid is not available, you may use another conventional, petroleum-based hydraulic fluid having specifications that fall within the listed range for all the following material properties and that it meets industry standards. Do not use synthetic fluid. Consult with your lubricant distributor to identify a satisfactory product.

    Note: Toro does not assume responsibility for damage caused by improper substitutions, so use products only from reputable manufacturers who will stand behind their recommendation.

    High Viscosity Index/Low Pour Point Anti-wear Hydraulic Fluid, ISO VG 46

    Material Properties: 
     Viscosity, ASTM D445cSt @ 40°C (104°F) 44 to 48
     Viscosity Index ASTM D2270140 or higher
     Pour Point, ASTM D97-37°C to -45°C (-34°F to -49°F)
     Industry Specifications:Eaton Vickers 694 (I-286-S, M-2950-S/35VQ25 or M-2952-S)

    Note: Many hydraulic fluids are almost colorless, making it difficult to spot leaks. A red dye additive for the hydraulic fluid is available in 20 ml (0.67 fl oz) bottles. A bottle is sufficient for 15 to 22 L (4 to 6 US gallons) of hydraulic fluid. Order Part No. 44-2500 from your authorized Toro distributor.

    Important: Toro Premium Synthetic Biodegradable Hydraulic Fluid is the only synthetic biodegradable fluid approved by Toro. This fluid is compatible with the elastomers used in Toro hydraulic systems and is suitable for a wide-range of temperature conditions. This fluid is compatible with conventional mineral oils, but for maximum biodegradability and performance, the hydraulic system should be thoroughly flushed of conventional fluid. The oil is available in 19 L (5 US gallon) pails or 208 L (55 US gallon) drums from your authorized Toro distributor.

    Checking the Hydraulic-Fluid Level

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Check the hydraulic-fluid level.
    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Check the hydraulic-fluid level (Figure 77).

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    Changing the Hydraulic Fluid

    Maintenance Service IntervalMaintenance Procedure
    Every 800 hours
  • If you are not using the recommended hydraulic fluid or have ever filled the reservoir with an alternative fluid, change the hydraulic fluid.
  • Every 2,000 hours
  • If you are using the recommended hydraulic fluid, change the hydraulic fluid.
  • Every 2 years
  • Drain and flush the hydraulic tank.
  • Hydraulic Fluid Capacity: 28.4 L (7.50 US gallons)

    If the fluid becomes contaminated, contact your authorized Toro distributor, because the system must be flushed. Contaminated fluid looks milky or black when compared to clean oil.

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Raise the hood.

    3. Disconnect the case return line from the bottom of the reservoir and let the hydraulic fluid flow into a large drain pan.

    4. Install the hose when the hydraulic fluid stops draining.

    5. Fill the reservoir with hydraulic fluid; refer to Checking the Hydraulic-Fluid Level.

      Important: Use only the hydraulic fluids specified. Other fluids could cause system damage.

    6. Install the reservoir cap.

    7. Turn the key in the key switch to the ON position to start the engine. Use all the hydraulic controls to distribute hydraulic fluid throughout the system, and check for leaks.

    8. Turn the key in the key switch to the OFF position.

    9. Check the fluid level and add enough to raise level the level to the FULL mark on the dipstick. Do not overfill.

    Replacing the Hydraulic Filters

    Maintenance Service IntervalMaintenance Procedure
    Every 800 hours
  • If you are not using the recommended hydraulic fluid or have ever filled the reservoir with an alternative fluid, replace the hydraulic filter (sooner if the service interval indicator is in the red zone).
  • Every 1,000 hours
  • If you are using the recommended hydraulic fluid, replace the hydraulic filter (sooner if the service interval indicator is in the red zone).
  • Use Toro replacement filters Part No. 94-2621 for the rear (cutting units) of the machine and Part No. 75-1310 for the front (charge) of the machine.

    Important: Using another filter may void the warranty on some components.

    1. Tilt the operator’s seat to access the mower-pressure filter; refer to Accessing the Hydraulic Lift Compartment

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    2. Replace the charge hydraulic filter at the hydraulic lift compartment as shown in Figure 79.

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    3. Lower and secure the operator’s seat.

    4. Replace the return filter at the right side of the machine (Figure 79).

    5. Start the engine and let it run for about 2 minutes to purge air from the system. Shut off the engine and check for leaks.

    Checking the Hydraulic Lines and Hoses

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Inspect the hydraulic lines and hoses for leaks, kinked lines, loose mounting supports, wear, loose fittings, weather deterioration, and chemical deterioration.
  • Every 2 years
  • Replace the hydraulic hoses.
  • Inspect the hydraulic lines and hoses daily for leaks, kinked lines, loose mounting supports, wear, loose fittings, weather deterioration, and chemical deterioration. Make all necessary repairs before operating the machine.

    Warning

    Hydraulic fluid escaping under pressure can penetrate skin and cause injury.

    • Seek immediate medical help if fluid is injected into skin.

    • Make sure that all hydraulic-fluid hoses and lines are in good condition and all hydraulic connections and fittings are tight before applying pressure to the hydraulic system.

    • Keep your body and hands away from pinhole leaks or nozzles that eject high-pressure hydraulic fluid.

    • Use cardboard or paper to find hydraulic leaks.

    • Safely relieve all pressure in the hydraulic system before performing any work on the hydraulic system.

    Cutting Unit Maintenance

    Removing the Cutting Units

    1. Park the machine on a level surface, engage the parking brake, lower the cutting units, shut off the engine, and remove the key.

    2. Disconnect and remove the hydraulic motor from the cutting unit (Figure 80). Cover the top of the spindle to prevent contamination.

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    3. Remove the lynch pin (for Groundsmaster 4500 machines) or retaining nut (for Groundsmaster 4700 machines) securing the cutting unit-carrier frame to the lift-arm pivot pin (Figure 81).

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    4. Roll the cutting unit away from the machine.

    Installing the Cutting Units

    1. Move the cutting unit into position in front of the machine.

    2. Slide the cutting unit-carrier frame onto the lift-arm-pivot pin (Figure 81). Secure the cutting unit to the pin with the lynch pin (for Groundsmaster 4500 machines) or retaining nut (for Groundsmaster 4700 machines).

    3. Install the hydraulic motor to the cutting unit (Figure 80). Make sure that the O-ring is in position and not damaged.

    4. Grease the spindle.

    Servicing the Front Roller

    Inspect the front roller for wear, excess wobble, or binding. Service or replace the roller or components if any of these conditions exist.

    Disassembling the Front Roller

    1. Remove the roller-mounting bolt (Figure 82).

    2. Insert a punch through the end of the roller housing and drive the opposite bearing out by alternating taps to the opposite side of inner bearing race. There should be a 1.5 mm (0.060 inch) lip of inner race exposed.

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    3. Push the second bearing out in press.

    4. Inspect the roller housing, bearings, and bearing spacer for damage (Figure 82). Replace any damaged components and assemble them.

    Assembling the Front Roller

    1. Press the first bearing into the roller housing (Figure 82). Press on the outer race only or equally on the inner and outer race.

    2. Insert the spacer (Figure 82).

    3. Press the second bearing into the roller housing (Figure 82). Pressing equally on the inner and outer race until the inner race contacts the spacer.

    4. Install the roller assembly into the cutting-unit frame.

    5. Verify that there is no more than a 1.5 mm (0.060 inch) gap between roller assembly and the roller mount brackets of the cutting-unit frame. If there is a gap over 1.5 mm (0.060 inch), install enough 5/8-inch diameter washers to take up the slop.

      Important: Securing the roller assembly with a gap larger than 1.5 mm (0.060 inch) creates a side load on the bearing and can lead to premature bearing failure

    6. Torque the mounting bolt to 108 N∙m (80 ft-lb).

    Blade Maintenance

    Blade Safety

    • Inspect the blade periodically for wear or damage.

    • Use care when checking the blades. Wrap the blades or wear gloves, and use caution when servicing the blades. Only replace or sharpen the blades; never straighten or weld them.

    • On multi-bladed machines, take care as rotating one blade can cause other blades to rotate.

    Servicing the Blade Plane

    The cutting unit comes from the factory preset at 5 cm (2 inches) height of cut and blade rake of 7.9 mm (0.310 inch). The left and right heights are also preset to within ± 0.7 mm (0.030 inch) of the other.

    The cutting unit is designed to withstand blade impacts without deformation of the chamber. If the blade strikes a solid object, inspect the blade for damage and the blade plane for accuracy.

    Inspecting the Blade Plane

    1. Remove the hydraulic motor from the cutting unit and remove the cutting unit from the machine.

    2. Use a hoist (or minimum of 2 people) and place the cutting unit on a flat table.

    3. Mark 1 end of the blade with a paint pen or marker. Use this end of the blade to check all heights.

    4. Position the cutting edge of the marked end of the blade at 12 o’clock (straight ahead in the direction of mowing) (Figure 83) and measure height from table to cutting edge of blade.

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    5. Rotate the marked end of the blade to the 3 and 9 o’clock positions (Figure 83) and measure the heights.

    6. Compare the 12 o’clock measured height to the height-of-cut setting. It should be within 0.7 mm (0.030 inch). The 3 and 9 o’clock heights should be 1.6 to 6.0 mm (0.060 to 0.240 inch) higher than the 12 o’clock setting and within 2.2 mm (0.090 inch) of each other.

    If any of these measurements are not within specification, proceed to Adjusting the Blade Plane.

    Adjusting the Blade Plane

    Start with the front adjustment (change 1 bracket at a time).

    1. Remove the height-of-cut bracket, (front, left, or right) from the cutting-unit frame (Figure 84).

    2. Insert 1.5 mm (0.060 inch) shims and/or 0.7 mm (0.030 inch) shims between the cutting-unit frame and bracket to achieve the desired height setting (Figure 84).

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    3. Install the height-of-cut bracket to the cutting-unit frame with the remaining shims assembled below the height-of-cut bracket.

    4. Secure the socket-head bolt/spacer and flange nut.

      Note: Socket-head bolt/spacer are held together with thread-locking adhesive to prevent the spacer from falling inside the cutting-unit frame.

    5. Verify the 12 o’clock height and adjust if needed.

    6. Determine if only 1 or both (right and left) height-of-cut brackets need to be adjusted.

      Note: If the 3 or 9 o’clock side is 1.6 to 6.0 mm (0.060 to 0.240 inch) higher than the new front height then no adjustment is needed for that side. Adjust the other side to within ± 2.2 mm (0.090 inch) of the correct side.

    7. Adjust the right and/or left height-of-cut brackets by repeating steps 1 through 4.

    8. Secure the carriage bolts and flange nuts.

    9. Verify the 12, 3, and 9 o’clock heights.

    Removing and Installing the Cutting-Unit Blade(s)

    Replace the blade if it hits a solid object, is out of balance, or is bent. Always use genuine Toro replacement blades to ensure safety and optimum performance.

    1. Park the machine on a level surface, raise the cutting unit to the transport position, engage the parking brake, shut off the engine, and remove the key.

      Note: Block or lock the cutting unit to prevent it from accidentally falling.

    2. Grasp the end of the blade using a rag or thickly-padded glove.

    3. Remove the blade bolt, anti-scalp cup, and blade from the spindle shaft (Figure 85).

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    4. Install the blade, anti-scalp cup, and blade bolt and tighten the blade bolt to 115 to 149 N∙m (85 to 110 ft-lb).

      Important: The curved part of the blade must be pointing toward the inside of the cutting unit to ensure proper cutting.

      Note: After striking a foreign object, torque all spindle-pulley nuts to 115 to 149 N∙m (85 to 110 ft-lb).

    Inspecting and Sharpening the Cutting Unit Blade(s)

    Both cutting edges and the sail, which is the turned-up portion opposite of the cutting edge, contribute to a good quality of cut. The sail is important because it lifts the grass up straight, thereby producing an even cut. However, the sail gradually wears down during operation. As the sail wears down, the quality of cut degrades, although the cutting edges are sharp. The cutting edge of the blade must be sharp so that the grass is cut rather than torn. A dull cutting edge is evident when the tips of the grass appear brown and shredded. Sharpen the cutting edges to correct this condition.

    1. Park the machine on a level surface, raise the cutting unit, engage the parking brake, put the traction pedal in NEUTRAL, put the PTO lever in the OFF position, shut off the engine, and remove the key from the ignition.

    2. Examine the cutting ends of the blade carefully, especially where the flat and curved parts of the blade meet (Figure 86).

      Note: Because sand and abrasive material can wear away the metal that connects the flat and curved parts of the blade, check the blade before using the mower. If the blade is worn (Figure 86), replace it.

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    3. Examine the cutting edges of all of the blades and sharpen the cutting edges if they are dull or nicked (Figure 87).

      Note: Sharpen only the top of the cutting edge and maintain the original cutting angle to ensure sharpness (Figure 87). The blade remains balanced if you remove the same amount of metal from both cutting edges.

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      Note: Remove the blades and sharpen them on a grinder. After sharpening the cutting edges, install the blade with the anti-scalp cup and blade bolt; refer to Removing and Installing the Cutting-Unit Blade(s).

    4. Ensure that the blade is straight and parallel; lay the blade on a level surface and check its ends. The ends of the blade must be slightly lower than the center, and the cutting edge must be lower than the heel of the blade.

    Storage

    Storage Safety

    • Shut off the engine, remove the key, and wait for all movement to stop before you leave the operator’s position. Allow the machine to cool before adjusting, servicing, cleaning, or storing it.

    • Do not store the machine or fuel container where there is an open flame, spark, or pilot light, such as on a water heater or other appliance.

    Preparing the Machine for Storage

    Important: Do not use brackish or reclaimed water to clean the machine.

    Preparing the Traction Unit

    1. Thoroughly clean the traction unit, cutting units, and engine.

    2. Check the tire pressure. Inflate all traction unit tires to 83 to 103 kPa (12 to 15 psi).

    3. Check all fasteners for looseness and tighten them as necessary.

    4. Grease all grease fittings and pivot points. Wipe up any excess lubricant.

    5. Lightly sand and use touch-up paint on painted areas that are scratched, chipped, or rusted. Repair any dents in the metal body.

    6. Service the battery and cables as follows:

      1. Remove the battery terminals from the battery posts.

        Note: Always disconnect the negative terminal first and the positive last. Always connect the positive terminal first and the negative last.

      2. Clean the battery, terminals, and posts with a wire brush and baking soda solution.

      3. Coat the cable terminals and battery posts with Grafo 112X skin-over grease (Part Number 505-47) or petroleum jelly to prevent corrosion.

      4. Slowly recharge the battery every 60 days for 24 hours to prevent lead sulfation of the battery.

    Preparing the Engine

    1. Drain the engine oil from the oil pan and replace the drain plug.

    2. Remove and discard the oil filter. Install a new oil filter.

    3. Refill the oil pan with designated quantity of motor oil.

    4. Turn the key in the switch to the ON position, start the engine, and run it at idle speed for approximately 2 minutes.

    5. Turn the key in the switch to the OFF position.

    6. Thoroughly drain all fuel from the fuel tank, lines, and the fuel filter/water separator assembly.

    7. Flush the fuel tank with fresh, clean diesel fuel.

    8. Secure all fuel-system fittings.

    9. Thoroughly clean and service the air-cleaner assembly.

    10. Seal the air-cleaner inlet and the exhaust outlet with weatherproof tape.

    11. Check the antifreeze protection and add as needed for expected minimum temperature in your area.

    Preparing a Cutting Unit

    If the cutting units are separated from the traction unit for any length of time, install a spindle plug in the top of the spindles to protect the spindles from dust and water.

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