Groundsmaster® 4300 Traction Unit

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.

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

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

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

Grease the machine before use; refer to Greasing the Bearings and Bushings. Failure to properly grease the machine results in premature failure of critical parts.

1. Use rubbing alcohol and a clean rag to clean the area of the hood next to the hood lock, and allow the hood to dry. (Figure 6).

   

   Figure 6

   1. CE decal
   2. Hood lock

2. Remove the backing from the CE decal.

3. Apply the decal to the hood.

1. Use rubbing alcohol and a clean rag to clean the floor bracket area next to the serial plate, and allow the bracket to dry (Figure 7).

   

   Figure 7

   1. Year of production decal
   2. Serial plate

2. Remove the backing from the year of production decal.

3. Apply the decal to the floor bracket.

1. Use rubbing alcohol and a clean rag to clean the surface of warning decal, and allow the decal to dry (Figure 8).

   

   Figure 8

   1. CE warning decal
   2. Warning decal 133-2930

2. Remove the backing from the CE warning decal.

3. Apply the CE warning decal over the existing decal.

Pull the seat-position lever (Figure 16) to move the seat forward and rearward. Release the lever to lock the seat position.

Rotate the weight-adjusting knob until your weight is displayed in the window of the weight gauge.

Rotate the height-adjusting knob to change the height of the seat.

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

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

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

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

The correct air pressure in the front and rear tires is 83 to 103 kPa (12 to 15 psi).

Important: Maintain 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.

Figure 19

Important: The 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 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. Lower the cutting units and remove the cutting units from the frames by removing these bolts and pins shown in Figure 20.

Figure 20

1. Bolt and pin

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 21.

3. Beginning with front adjustment, remove the bolt.

   

   Figure 21

   1. Height-of-cut plate
   2. Spacer
   3. Height-of-cut bracket
   4. Shims

4. While supporting the chamber, remove the spacer (Figure 21).

5. Move the chamber to the desired height of cut and install a spacer into the designated height-of-cut hole and slot (Figure 22).

   

   Figure 22

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).

Important: If your machine fails any of the interlock switch checks, contact your authorized Toro distributor.

The blades of the cutting unit should come to a complete stop in approximately 5 seconds after you shut down the cutting-unit-engagement switch.

Note: Make sure that the cutting units are lowered onto a clean section of turf or hard surface to avoid thrown dust and debris.

1. Have a second person stand back from the cutting unit at least 6 m (20 feet) and watch the blades on 1 of the cutting unit.

2. While the cutting units are engaged and spinning at full speed, disengage the PTO switch and record the time it takes for the blades to come to a complete stop.

   Note: If this time is greater than 7 seconds, the braking valve needs adjustment. Call your authorized Toro distributor for assistance in making this adjustment.

The display shows information about your machine such as the operating status, various diagnostics and other information about the machine. There are multiple screens on the display. You can switch between the screens, at any time, by pressing any of the display buttons and then selecting the appropriate directional arrow.

Figure 23

1. Indicator light
2. Display brightness sensor
3. Navigational button— up
4. Back/exit button
5. Navigational button— decrease/ left
6. Navigational button— down
7. Navigational button— increase/ right
8. Enter/select button

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

	Hour meter
	Service is due.
	The status of the engine speed (rpm)
	Virtual pedal stop settings
	The glow plugs are active.
	The operator must sit in the seat.
	The parking brake is engaged.
	Engine coolant temperature (°C or °F)
	Traction or Traction Pedal
	Start the engine.
	The cruise control is engaged.
	Engine
	Warm-up mode
	Reset-standby regeneration request
	Parked or recovery regeneration request
	A parked or recovery regeneration is processing.
	High exhaust temperature
	NOx control diagnosis malfunction; drive the machine back to the shop and contact your authorized Toro distributor (software version U and later).
	The power take-off is disabled.
	The PTO is on.
	Battery
	Fuel level
	Fuel is low.
	Warning
	Active
	Inactive
	Previous
	Next
	Increase
	Decrease
	Previous screen
	Next screen
	Increase value
	Decrease value
	Menu
	Scroll up/down
	Scroll left/right
	Locked

Accessible only by entering PIN

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 a synopsis of the options available from the menus:

Service—Menu Item	Description
Hours	Lists the total number of hours that the machine, engine, and PTO have been on, as well as the number of hours the machine has been transported and service due.
Counts	Lists numerous counts the machine has experienced.
Traction Pedal
Traction Pump
Virtual Speed Sensor
DPF Regeneration	The diesel particulate filter regeneration option and DPF submenus

Diagnostics—Menu Item	Description
Deck	Indicates the inputs and outputs for raising and lowering the cutting units.
Traction	Indicates the inputs and outputs for the traction pedal.
Cutting Units	Indicates the inputs, qualifiers, and outputs for raising and lowering the cutting units.
PTO	Indicates the inputs, qualifiers, and outputs for enabling the PTO circuit.
Engine	Indicates the inputs, qualifiers, and outputs for starting the engine
CAN Statistics	Indicates the inputs and outputs for the CAN.

Settings—Menu Item	Description
Enter PIN	Allows a person (superintendent/mechanic) authorized by your company with the PIN code to access protected menus.
Backlight	Controls the brightness of the LCD display.
Language	Controls the language used on the InfoCenter*.
Font Size	Controls the size of the font on the display.
Units	Controls the units used on the InfoCenter (English or Metric).
Protected Menus	Allows a person authorized by your company with the PIN code to access protected menus
Protect Settings	Allows the ability to change the settings in the protected settings.

Note: The Machine Settings menu will only show when the PIN is entered.

Machine Settings—Menu Item	Description
Mow Speed	Controls the maximum speed while in mow (low range).
Transport Speed	Controls the maximum speed while in transport (high range).
Smart Power	Turns Smart Power on and off.
Counterbalance	Controls the amount of counterbalance applied by the cutting units.
Acceleration	Low, Medium, and High settings control how quickly the traction speed reacts when you move the traction pedal.

Protected under Protected Menus—accessible only by entering PIN

About—Menu Item	Description
Model	Lists the model number of the machine.
SN	Lists the serial number of the machine.
Machine Controller Revision	Lists the software revision of the master controller.
S/W Revision	Lists the software revision of the primary controller.
InfoCenter Revision	Lists the software revision of the InfoCenter

There are operating configuration settings that are adjustable within the SETTINGS of the InfoCenter. To lock these settings, use the PROTECTED MENU.

Note: At the time of delivery, the initial password code is programmed by your distributor.

Note: For operating convenience, you may decide to perform a parked regeneration before the soot load reaches 100%, provided the engine has run more than 50 hours since the last successful reset, parked, or recovery regeneration.

Use the Technician menu to view the current state of engine regeneration control and the current soot level.

1. In SETTINGS, scroll down to DPF RENGERATION and press the select button.

2. In DPF RENGERATION, scroll down to TECHNICIAN and press the select button.

   

   Figure 26

Figure 27

1. Diagnostic light

• Flashing red—active fault

• Solid red—active advisory

• Solid blue—calibration/dialog messages

• Solid green—normal operation

This machine will dynamically brake and stop when you return the traction pedal to neutral.

Note: For smooth deceleration, use your foot to slowly control the traction pedal back to neutral. Do not take your foot off the pedal and allow it to snap back to the neutral position unless you intend to stop quickly.

The machine should come to a complete stop in approximately 3.7 m (12 ft) from the maximum transport speed of 10 mph.

1. On flat, dry pavement, mark out the start and end of 3.7 m (12 ft).

2. Drive the machine at the maximum transport speed of 16 km/h (10 mph) and remove your foot at the start of the 3.7 m (12 ft).

3. Check if the machine stops within 0.6 m (2 ft) of the end mark (3.7 m or 12 ft).

4. Contact your Toro distributor if the stopping distance of the machine is not within 0.6 m (2 ft) of this distance.

Transport Reverse Speed

• If the maximum transport speed set by the supervisor is above 8.0 km/h (5.0 mph), the maximum reverse speed is 8.0 km/h (5.0 mph).

• If the maximum transport speed set by the supervisor is at or below 8.0 km/h (5.0 mph), maximum reverse speed is equal to the transport speed set by the supervisor.

Mowing Reverse Speed

• If the maximum mow speed set by the supervisor is above 6.4 km/h (4.0 mph), the maximum reverse speed is 6.4 km/h (4.0 mph).

• If the maximum mow speed set by the supervisor is at or below 6.4 km/h (4.0 mph), maximum reverse speed is equal to the transport speed set by the supervisor.

This machine displays estimated traction speeds in kilometers per hour (km/h) or miles per hour (mph).

• The instantaneous speed is displayed in the upper left-hand corner of the cruise control and virtual pedal stop screens.

• The traction speeds are estimated, and calibrated to be most accurate at 8.0 km/h (5.0 mph) while mowing. Displayed speeds are accurate when it is 0.8 km/h (0.5 mph) above or below the display speed while driving on dry, flat pavement.

• Contact your authorized Toro distributor if the machine's observed speeds deviate more than 2.4 km/h (1.5 mph) from the displayed speeds.

When starting the machine in cold weather, warm-up mode limits the engine speed to low idle for a short period after the engine is started, preventing potential component damage from operating the machine with cold oil.

A snowflake icon on the InfoCenter screen denotes when warm-up mode is active. Do not operate the machine until after the warm-up period.

• 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.

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

• When transporting the machine between work areas, 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.

• Never shut off the machine while driving the machine.

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

• This machine is equipped with 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.

Figure 28

1. Traction pedal

The virtual pedal stop (VPS) feature allows you to temporarily set a maximum traction speed that is less than the password-protected supervisor maximum traction speed.

To temporarily set the maximum speed of the machine, press the traction pedal fully forward (Figure 28). You can set a separate speed for the mow range and transport range (Figure 29).

• To access this feature, press the up or down navigation button from the main screen. (Figure 29).

  Note: This feature reverts back to the supervisor maximum speed settings when you turn the key to the OFF position.

  

  Figure 29

  1. Indicates the maximum traction speed (pedal stop)
  2. This speed is locked out under the protected PIN menu.

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

• Whenever you change the maximum traction speed using the supervisor maximum speed settings or Virtual Pedal Stop, the traction pedal is automatically reprogrammed to use the full pedal stroke between neutral and the new maximum speed. This means that you gain more precise control of the traction speed at lower maximum speed settings.

This feature determines how quickly the machine changes traction speed when the traction pedal is not in the NEUTRAL position.

Note: If you take your foot off the traction pedal, allowing it to return to the NEUTRAL position while the machine is moving, the braking profile is engaged. The braking profile is always the same and cannot be customized by the acceleration mode feature.

Enter the protected menus in the InfoCenter to change the acceleration mode. The acceleration mode has the following 3 positions:

• Low—least aggressive acceleration and deceleration

• Medium (default)—medium acceleration and deceleration

• High—most aggressive acceleration and deceleration

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 reduce the quality of the after-cut appearance; refer to Changing the Counterbalance Settings.

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

You can change the amount of required cutting-unit counterbalance (upward lift) to meet your current mowing conditions.

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

2. Turn the key in the switch to the RUN position.

3. In the InfoCenter Settings Menu, scroll down to Counterbalance.

4. Press the right button to select counterbalance and change between the low, medium, and high settings.

   Note: After completing the adjustment, move the machine to a test area and operate the machine with the new setting. The new counterbalanced setting may change the effective height of cut.

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.

Important: The fuel system automatically bleeds itself before starting the engine if you are starting the engine for the first time, the engine has shut off due to lack of fuel, or you have performed maintenance on the fuel system.

1. Sit on the seat, keep your foot off the traction pedal so that it is in NEUTRAL, engage the parking brake, and ensure that the PTO switch is in the DISENGAGED position.

2. Turn the key in the switch to the RUN position.

3. When the glow indicator dims, turn the key in the switch to the START position. Release the key immediately when the engine starts and allow it to return to the RUN position.

4. Run the engine at low idle speed until it warms up.

1. Move all controls to NEUTRAL, engage the parking brake, and allow the engine to reach low idle speed.

   Important: Allow the engine to idle for 5 minutes before shutting it off after a full load operation. Failure to do so may engine components.

2. Turn the key in the switch to the OFF position and remove the key.

1. Start the engine, disengage the brake, disengage the PTO switch, and raise the cutting units.

2. Using the traction pedal like an accelerator pedal on a car, drive the machine to the mowing area.

3. Pull the PTO switch to the ENGAGE position.

4. Start driving the machine and lower the cutting units only when all cutting units are over the mowing area.

5. Begin mowing the area.

6. When you complete a mowing pass, tap the lower control lever rearward to lift the cutting units before leaving the mowing area.

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

8. Press the lower control lever to automatically lower all cutting units in the mowing area and continue mowing.

The diesel-particulate filter (DPF) removes soot from the engine exhaust.

The DPF regeneration process uses heat from the engine exhaust that is increased by the catalyst to reduce accumulated soot into ash.

To keep the DPF clean, remember the following:

• Run the engine at full engine speed when possible to promote DPF self-cleaning.

• Use the correct engine oil.

• Minimize the amount of time that you idle the engine.

• Use only ultra low sulfur diesel fuel.

Operate and maintain your machine with the function of the DPF in mind. Engine under load generally produces adequate exhaust temperature for DPF regeneration.

Important: Minimize the amount of time that you idle the engine or operate the engine at low-engine speed to help reduce the accumulation of soot in the DPF.

Understanding the Regeneration Icons

Icon	Icon Definition
	• Parked or recovery regeneration icon-regeneration is requested.
	• Perform the regeneration immediately.
	• A regeneration is acknowledged and the request is processing.
	• A regeneration is in progress and the exhaust temperature is elevated.
	• NOx control system malfunction; the machine requires service.

Types of Diesel Particulate Filter Regeneration

Types of diesel particulate filter regeneration that are performed while the machine is operating:

Type of Regeneration	Conditions that cause DPF regeneration	DPF description of operation
Passive	Occurs during normal operation of the machine at high-engine speed or highengine load	• The InfoCenter does not display an icon indicating passive regeneration.
		• During passive regeneration, the DPF processes high-heat exhaust gasses, oxidizing harmful emissions, and burning soot to ash.
Assist	Occurs because of low-engine speed, low-engine load, or after the computer detects the DPF is becoming obstructed with soot	•The InfoCenter does not display an icon indicating assist regeneration.
		• During assist regeneration, the engine computer adjusts the engine settings to raise the exhaust temperature.
Reset	Occurs every 100 hours	• When the high exhaust-temperature icon is displayed in the InfoCenter, a regeneration is in progress.
	Also occurs if normal engine operation surpasses the allowed soot accumulation amount within the filter
		• During reset regeneration, the engine computer maintains an elevated engine speed to ensure filter regeneration.

Types of diesel particulate filter regeneration that require you to park the machine:

Type of Regeneration	Conditions that cause DPF regeneration	DPF description of operation
Parked	Occurs because the computer determines that the automatic DPF cleaning has not been sufficient.	• When the reset-standby/parked or recovery regeneration icon or a regeneration is requested.
	Also occurs because you initiate a parked regeneration
	May occur because the inhibit regen has been initiated and has disabled the automatic DPF cleaning from occuring	• Perform the parked regeneration as soon as possible to avoid needing a recovery regeneration.
	May result from using the incorrect fuel or engine oil	• A parked regeneration requires 30 to 60 minutes to complete.
		• You must have at least a 1/4 tank of fuel in the tank.
		• You must park the machine to perform a parked regeneration.
Recovery	Occurs because the request for parked recovery has been ignored, allowing the DPF to be critically plugged	• When the reset-standby/parked or recovery regeneration icon a recovery regeneration is requested.
		• A recovery regeneration requires up to 3 hours to complete.
		• You must have at least a 1/2 tank of fuel in the machine.
		• You must park the machine to perform a recovery regeneration.

• Front of the machine—the hole in the rectangular pad, under the axle tube, inside each front tire (Figure 35).

  

  Figure 35

  1. Front tie-down

• Rear of the machine—each side of the machine on the rear frame(Figure 36).

  

  Figure 36

  1. Rear tie-down

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

In an emergency, you can move the machine forward by actuating the bypass valve 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 bypass valves must be open and the brake released whenever you push or tow the machine.

1. Unlatch the seat base and tilt the seat open.

2. Locate the bypass valve under the seat and on the top of the hydrostat (Figure 37).

   

   Figure 37

3. Loosen the valves with 3 turns to allow the oil to bypass internally.

   Note: Because the fluid is bypassed, the machine can be moved slowly without damaging the transmission.

4. Locate the brake release manifold near the front right tire and behind the hydraulic tank (Figure 38).

   

   Figure 38

   1. Pump mechanism on the brake manifold
   2. Black knob

5. Insert the long end of a ratchet or similar object, hold the black knob in on the manifold, and pump the manifold 3 times. As soon as there is substantial resistance when pumping the brake is released.

   Important: Do not pump the manifold after it does not pump easily. Damage could occur if the manifold is pumped too much.

   Note: Once the pressure is built up in the manifold, the brake will be released for approximately 60 minutes. If needed after 60 minutes, release the brake again by pumping the manifold.

6. Push or tow the machine.

7. Set the brake by pulling the black knob out or starting the engine.

   Note: The brake automatically resets when you start the engine and you do not need to pull the black knob out.

8. Close the bypass valves. Torque the valves to 11 N∙m (5 to 8 ft-lb).

   Important: Ensure that the bypass valves are closed before you start operating the machine. Running the engine with an open bypass valve causes the transmission to overheat.

1. Park the machine on a level surface.

2. Engage the parking brake.

3. Disengage the PTO.

4. Move the lower mow/raise control to the MOW position.

5. Shut off the engine, and remove the key.

6. Wait for all parts to stop moving.

7. Allow the engine to cool.

1. Unlatch the seat base (A of Figure 39).

2. Tilt the seat and base open (B of Figure 39).

3. Support it with the prop rods (C of Figure 39).

   

   Figure 39

1. Rotate the seat slightly, and lift the front prop rod out of the dent of the seat-support slot.

2. Carefully lower the seat until it latches securely.

Note: Support the machine with jack stands whenever you work under the machine.

Use the following as machine-lift points:

Figure 40

1. Front of the machine
2. Jack brackets (front-axle tube)
3. Rear-axle tube
4. Back of the machine

• Front—the jack brackets of the front-axle tube (Figure 40).

• Rear—the rear-axle tube.

If you operate the machine under normal conditions, use No. 2 lithium grease to lubricate all bearings and bushings at the specified maintenance interval. Lubricate bearings and bushings immediately after every washing, regardless of the interval listed.

The grease fitting locations and quantities are as follows:

• Pump driveshaft U-joint (3)—Figure 41

  

  Figure 41

• Cutting unit lift-arm cylinders (2 each)—Figure 42

  

  Figure 42

• Lift-arm pivots (1 each)—Figure 42

• Cutting unit carrier-frame pivot (1 each)—Figure 43

  

  Figure 43

• Lift-arm pivot shaft (1 each)—Figure 44

  

  Figure 44

• Axle-steering pivot (1)—Figure 45

  

  Figure 45

• Steering-cylinder ball joints (2) and rear axle (1)—Figure 46

  

  Figure 46

• Cutting unit spindle-shaft bearings (2 per cutting unit)—Figure 47

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

  

  Figure 47

• Rear-roller bearings (2 per cutting unit)—Figure 48

  

  Figure 48

  Note: Ensure 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 hole, there is also an alignment mark on 1 end of the roller shaft.

Check the whole intake system for leaks, damage, or loose hose clamps. Do not use a damaged air filter.

Service the air-cleaner filter only when the service indicator requires it. Changing the air filter before it is necessary only increases the chance of dirt entering the engine when the filter is removed.

Important: Make sure that the cover is seated correctly, seals with the air-cleaner body, and the rubber outlet valve is in a downward position—between the 5 o’clock and 7 o’clock positions when viewed from the end.

Figure 49

This Operator’s Manual contains more detailed fuel and fuel system maintenance information than the Yanmar^® engine Owner’s Manual, which is a general-purpose reference relating to fuel and fuel maintenance.

Ensure that you understand that the fuel system maintenance, fuel storage, and fuel quality require your attention to avoid downtime and extensive engine repairs.

The fuel system has extremely tight tolerances due to the emissions and control requirements. Diesel fuel quality and cleanliness is more important for the longevity of today’s high-pressure common rail (HPCR) fuel-injection system used on diesel engines.

Important: Water or air in the fuel system will damage your engine! Do not assume that new fuel is clean. Ensure that your fuel is from a quality supplier, store your fuel correctly, and use your fuel supply within 180 days.

Important: If you do not follow the procedures for fuel filter replacement, fuel system maintenance, and fuel storage, the engine fuel system could fail prematurely. Perform all fuel system maintenance at the specified intervals or whenever the fuel is contaminated or its quality is poor.

Appropriate fuel storage is critical for your engine. Proper maintenance of fuel storage tanks is often overlooked and leads to the contamination of fuel delivered to the machine.

• Acquire only enough fuel that you will consume within 180 days. Do not use fuel that has been stored for more than 180 days. This helps eliminate water and other contaminates in the fuel.

• If you do not remove the water from the storage tank or machine fuel tank, it can lead to rust or contamination in the storage tank and fuel system components. Tank sludge developed by mold, bacteria, or fungus restricts flow and clogs the filter and fuel injectors.

• Inspect your fuel storage tank and machine fuel tank regularly to monitor the fuel quality in the tank.

• Ensure that your fuel comes from a quality supplier.

• If you find water or contaminants in your storage tank or machine fuel tank, work with your fuel provider to correct the problem and perform all fuel system maintenance.

• Do not store diesel fuel in tanks or canisters made with zinc-plated components.

1. Clean the area around the fuel-filter head (Figure 55).

   

   Figure 55

   1. Fuel-filter head
   2. Fuel filter

2. Remove the filter and clean the filter head mounting surface (Figure 55).

   Note: Use a clean cloth to clean the filter head.

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.

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.

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

Inspect the fuel lines for deterioration, damage, or loose connections.

Replace any deteriorated clamps or hoses.

Note: Prime the fuel system if you replace any fuel lines; refer to Priming the Fuel System.

1. Refer to the Engine section in the Service Manual for information on disassembling and assembling the diesel-oxidation catalyst and the soot filter of the DPF.

2. Contact your authorized Toro distributor for diesel-oxidation catalyst and the soot filter replacement parts or service.

3. Contact your authorized Toro distributor to reset the engine ECU after you install a clean DPF.

Prime the fuel system after the following scenarios:

• Replacing the fuel filter.

• Draining the water separator after each use or daily.

• Running out of fuel.

• Replacing a fuel hose or open the fuel system for any reason.

To prime the fuel system, perform the following steps:

Important: Do not use the engine-starter motor to crank the engine for fuel-system priming.

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.

   5. Start the engine and inspect for leaks.

Perform the following tasks to service the battery:

• Check the battery condition

• Clean the battery (if necessary)

  Note: To clean the battery, wash the entire case with a solution of baking soda and water. Rinse it with clear water.

• Check the battery-cable connections and coat the battery posts and cable connectors with Grafo 112X (skin-over) grease or petroleum jelly to prevent corrosion.

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.

The fuse block (Figure 57) is located under the seat. Refer to Figure 59 for a description of each fuse.

1. Unlatch the seat base, tilt the seat base open, and support it with the prop rods.

   

   Figure 56

2. Replace the open fuse with the same fuse type and amperage rating.

   

   Figure 57

   1. Fuse block

3. Rotate the seat and seat base closed and latch the base.

   

   Figure 58

Figure 59

1. TEC power relay
2. Electrical power relay
3. Read the Operator's Manual for fuse information.
4. Key switch
5. Air-ride seat
6. Electrical power
7. Headlights
8. USB power point

Important: Keep the battery fully charged. This is especially important to prevent battery damage when the temperature is below 0°C (32°F).

1. Clean the exterior of the battery case and the battery posts.

   Note: Connect the leads of the battery charger to battery posts before connecting the charger to the electrical source.

2. Look at the battery and identify the positive and negative battery posts.

3. Connect the positive lead of the battery charger to the positive battery post (Figure 60).

   

   Figure 60

   1. Positive battery post
   2. Negative battery post
   3. Red (+) charger lead
   4. Black (-) charger lead

4. Connect the negative lead of the battery charger to the negative-battery post (Figure 60).

5. Connect the battery charger to the electrical source, and charge the battery.

   Important: Do not overcharge the battery.

6. When the battery is fully charged, unplug the charger from the electrical source, then disconnect the charger leads from the battery posts (Figure 60).

1. Torque the front-axle hub nuts to 407 to 542 N·m (300 to 400 ft-lb).

2. If your machine has the CrossTrax^® feature, torque the rear-axle hub nuts to 366 to 447 N·m (270 to 330 ft-lb).

   

   Figure 61

   1. Rear-axle hub nut [366 to 447 N·m (270 to 330 ft-lb)]
   2. Front-axle hub nut [407 to 542 N·m (300 to 400 ft-lb)]

1. Rotate the steering wheel so that the rear wheels are straight ahead.

2. Loosen the jam nut on each end of the tie rod (Figure 62).

   Note: The end of the tie rod with the external groove is a left-hand thread.

   

   Figure 62

   1. Wrench slot
   2. Tie rod
   3. Jam nut

3. Using the wrench slot, rotate the tie rod.

4. Measure the distance at the front and rear of the rear wheels at axle height.

   Note: The distance at the front of the rear wheels should be less than 6 mm (1/4 inch) of the distance measured at the rear of the wheels.

5. Repeat procedure as required.

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

Extended Life Coolant Standards

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.

The cooling system is filled with a 50/50 solution of water and permanent ethylene glycol antifreeze. The capacity of the cooling system is 9.5 L (10 US qt).

1. Check the level of coolant in the expansion tank (Figure 63).

   Note: The coolant level should be between the marks on the side of the tank.

   

   Figure 63

   1. Expansion tank

2. If the coolant level is low, remove the expansion-tank cap and replenish the system. Do not overfill.

3. Install the expansion-tank cap.

Remove debris from the screen and radiator/oil cooler daily (clean more frequently in dirty conditions).

1. Turn the key in the ignition switch to the OFF position and remove the key.

2. Thoroughly clean all debris out of the engine area.

3. Unlatch the clamp and pivot open the rear screen (Figure 64).

   

   Figure 64

   1. Rear screen latch
   2. Rear screen

4. Thoroughly clean both sides of the radiator and oil cooler (Figure 65) with compressed air.

   

   Figure 65

   1. Radiator/oil cooler

5. Close the screen and secure the latch.

Note: For proper belt tension, allow 10 mm (3/8 inch) deflection when a force of 44 N (10 lb) is applied on the belt midway between the pulleys.

1. If the deflection is not 10 mm (3/8 inch), loosen the alternator mounting bolts (Figure 66).

   

   Figure 66

   1. Mounting bolt
   2. Alternator

2. Increase or decrease the alternator-belt tension and tighten the bolts.

3. Check the deflection of the belt again to ensure that the tension is correct.

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

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.

1. Position the machine on a level surface, lower the cutting decks, and turn the key in the switch to the OFF position.

2. Check the hydraulic-fluid level (Figure 67).

   

   Figure 67

Hydraulic Fluid Capacity: 56.7 L (15 US gallons)

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

1. Turn the key in the switch to the OFF position and raise the hood.

2. Place a large drain pan under the fitting secured to the bottom of the hydraulic-fluid reservoir (Figure 68).

   

   Figure 68

   1. Hose

3. Disconnect the hose from the bottom of the fitting and let the hydraulic fluid flow into the drain pan.

4. Install the hose when hydraulic fluid stops draining.

5. Fill the reservoir with hydraulic fluid (Figure 67).

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

6. Install the reservoir cap.

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

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

9. Check the level of the hydraulic fluid and add enough to raise level to the Full mark on the dipstick.

   Important: Do not overfill.

The hydraulic system is equipped with a service-interval indicator (Figure 69). With the engine running, view the indicator, it should be in the green zone. When the indicator is in the red zone, change the hydraulic filters.

Figure 69

1. Hydraulic-filter restriction indicator

Important: Use of any other filters may void the warranty on some components.

1. Position the machine on a level surface, lower the cutting decks, turn the key in the switch to the OFF position, engage the parking brake, and remove the key.

2. Replace both of the hydraulic filters (Figure 70).

   

   Figure 70

3. Turn the key in the switch to the ON position, start the engine, and let it run for about 2 minutes to purge air from the system.

4. Turn the key in the switch to the OFF position and check for leaks.

Make all necessary repairs before operating.

Use the hydraulic system test ports to test the pressure in the hydraulic circuits. Contact your authorized Toro distributor for assistance.

Use the list below to identify and describe the different functions of the solenoids in the hydraulic manifold. Each solenoid must be energized to allow function to occur.

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

2. Disconnect and remove the hydraulic motor from the cutting unit (Figure 71). Cover the top of the spindle to prevent contamination.

   

   Figure 71

   1. Motor-mounting screws

3. Remove the lynch pin securing the deck-carrier frame to the lift-arm pivot pin (Figure 72).

   

   Figure 72

   1. Lynch pin
   2. Lift-arm pivot pin

4. Roll the cutting unit away from the traction unit.

1. Position the machine on a level surface and turn the key in the switch to the OFF position.

2. Move the cutting unit into position in front of the traction unit.

3. Slide the deck-carrier frame onto the lift-arm pivot pin and secure it with the lynch pin (Figure 72).

4. Install the hydraulic motor to the deck (Figure 71). Make sure that the O-ring is in position and not damaged.

5. Grease the spindle.

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

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

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 76).

   

   Figure 76

   1. Blade bolt
   2. Anti-scalp cup

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: 7After striking a foreign object, torque all spindle-pulley nuts to 115 to 149 N∙m (85 to 110 ft-lb).

1. Raise the cutting deck to the transport position, turn the key in the ignition switch to the OFF position, and engage the parking brake.

2. Block the cutting deck to prevent it from falling accidentally.

3. Examine the cutting ends of the blade carefully, especially where the flat and curved parts of the blade meet (Figure 77).

   Note: Since 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 machine.

4. If wear is noticed (Figure 77), replace the blade; refer to Inspecting the Blade Plane.

   Danger

   If the blade is allowed to wear, a slot will form between the sail and flat part of the blade (Figure 77). Eventually a piece of the blade may break off and be thrown from under the housing, possibly resulting in serious injury to yourself or bystanders.

   • Inspect the blade periodically for wear or damage.

   • Always replace a worn or damaged blade.

   

   Figure 77

   1. Cutting edge
   2. Sail
   3. Wear/slot/crack

5. Inspect the cutting edges of all blades. Sharpen the cutting edges if they are dull or nicked. Sharpen only the top of the cutting edge and maintain the original cutting angle to make sure that it is sharp (Figure 78).

6. If dull or nicked, sharpen only the top cutting edge while maintaining the original cutting angle (Figure 78).

   Note: The blade will remain balanced if the same amount of metal is removed from both cutting edges.

   

   Figure 78

   1. Sharpen at this angle only

7. To check the blade for being straight and parallel, lay the blade on a level surface and check its ends.

   Note: Position the ends of the blade slightly lower than the center, and the cutting edge lower than the heel of the blade. This blade produces a good quality of cut and requires minimal power from the engine. By contrast a blade that is higher at the ends than the center, or if cutting edge is higher than the heel, the blade is bent or warped and must be replaced.

   

   Figure 79

   1. Cutting edge
   2. Heel

8. Install the blade, sail facing toward cutting deck, with the anti-scalp cup and blade bolt. Torque the blade bolt to 115 to 149 N∙m (85 to 110 ft-lb).