Introduction

This rotary-blade, stand-on lawn mower is intended to be used by professional, hired operators. It is designed primarily for cutting grass on well-maintained lawns on residential or commercial properties. 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 more information, including safety tips, 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 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.

It is a violation of California Public Resource Code Section 4442 or 4443 to use or operate the engine on any forest-covered, brush-covered, or grass-covered land unless the engine is equipped with a spark arrester, as defined in Section 4442, maintained in effective working order or the engine is constructed, equipped, and maintained for the prevention of fire.

The enclosed engine owner's manual is supplied for information regarding the US Environmental Protection Agency (EPA) and the California Emission Control Regulation of emission systems, maintenance, and warranty. Replacements may be ordered through the engine manufacturer.

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

Warning

CALIFORNIA

Proposition 65 Warning

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

Use of this product may cause exposure to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Safety

Safety-Alert Symbol

The safety-alert symbol (Figure 3) shown in this manual and on the machine identifies important safety messages that you must follow to prevent accidents.

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The safety-alert symbol appears above information that alerts you to unsafe actions or situations and is followed by the word DANGER, WARNING, or CAUTION.

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

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

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.

  • Do not put your hands or feet near moving components of the machine.

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

  • Keep clear of the discharge opening.

  • Keep bystanders and children out of the operating area. Do not allow children to operate the machine. Allow only people who are responsible, trained, familiar with the instructions, and physically capable to operate the machine.

  • Stop the machine, shut off the engine, and remove the ignition key before servicing, fueling, or unclogging the machine.

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.

decalbatterysymbols
decaloemmarkt
decal106-5517
decal112-9028
decal116-8283
decal116-8775
decal126-2055
decal127-0326
decal131-3521
decal147-7921
decal131-3536
decal133-4604
decal133-4641
decal138-1147
decal142-5864
decal147-0212

Decal 147-4766 is included on Model 72510 only.

decal147-4766

Decal 161-1343 is included on Model 72506 only.

decal161-1343
decal132-0905
decal131-3526
decal139-2878
decal147-4764

Product Overview

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Become familiar with all the controls before you start the engine and operate the machine.

Control Panel

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Electronic-Control Unit Malfunction-Indicator Light

The electronic-control unit (ECU) continuously monitors the operation of the EFI system.

If a problem or fault within the system is detected, the malfunction-indicator light (MIL) is illuminated (Figure 5).

The MIL is the red light located in the console panel.

When the MIL illuminates, make initial troubleshooting checks; refer to .

If these checks do not correct the problem, further diagnosis and servicing by an Authorized Service Dealer is necessary.

Power-Takeoff Switch (PTO)

Use the power-takeoff switch (PTO) to engage and disengage mower blades or start and stop powered attachments; refer to Operating the Mower-Blade-Control Switch (PTO).

Hour Meter

The hour meter records the number of hours the engine has operated. It operates when the engine is running. Use these times for scheduling regular maintenance (Figure 6).

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Safety-Interlock Indicators

Symbols on the hour meter indicate with a black triangle that the interlock component is active (Figure 6).

Battery-Indicator Light

If you turn the key to the ON position for a few seconds, the battery voltage displays in the area where the hours are normally displayed.

The battery light turns on when you turn the key to the ON position and when the charge is below the correct operating level (Figure 6).

Throttle Control

The throttle controls the engine speed, and it has a continuous-variable setting from the SLOW to FAST position (Figure 5).

Key Switch

The key switch, used to start and shut off the engine, has 3 positions: OFF, RUN, and START. Refer to Starting the Engine.

Motion-Control Levers

Use the motion-control levers to drive the machine forward, reverse, and turn either direction.

Fuel-Shutoff Valve

Close the fuel-shutoff valve when transporting or storing the machine; refer to Using the Fuel-Shutoff Valve.

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

 52in Mower Deck60in Mower Deck
Cutting width131 cm (52 inches)152 cm (60 inches)
Width with deflector down173 cm (68 inches)193 cm (76 inches)
Width with deflector raised137 cm (54 inches)157 cm (62 inches)
Length with platform down218 cm (86 inches)224 cm (88 inches)
Length with platform up180 cm (71 inches)188 cm (74 inches)
Height127 cm (50 inches)127 cm (50 inches)
Weight481 kg (1061 lb)495 kg (1091 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.

To ensure optimum performance and continued safety certification of the machine, 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

Before Operation

Before Operation Safety

General Safety

  • Never allow children or untrained people to operate 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 moving parts to stop before leaving the operator’s position. Allow the machine to cool before servicing, adjusting, fueling, 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.

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

  • Evaluate the terrain to determine the appropriate equipment and any attachments or accessories required to operate the machine properly and safely.

Fuel Safety

  • Fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property.

    • To prevent a static charge from igniting the fuel, place the container and/or machine directly on the ground before filling, not in a vehicle or on an object.

    • Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any fuel that spills.

    • Do not handle fuel when smoking or around an open flame or sparks.

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

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

    • Store fuel in an approved container and keep it out of the reach of children.

  • Fuel is harmful or fatal if swallowed. Long-term exposure to vapors can cause serious injury and illness.

    • Avoid prolonged breathing of vapors.

    • Keep your hands and face away from the nozzle and the fuel-tank opening.

    • Keep fuel away from your eyes and skin.

  • 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 on other appliances.

  • Do not fill containers inside a vehicle or on a truck or trailer bed with a plastic liner. Always place containers on the ground, away from your vehicle before filling.

  • Remove the equipment from the truck or trailer and refuel it while it is on the ground. If this is not possible, then refuel from a portable container rather than a fuel-dispenser nozzle.

  • Do not operate the machine without the entire exhaust system in place and in proper working condition.

  • Keep the fuel-dispenser nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete. Do not use a nozzle lock-open device.

  • If you spill fuel on your clothing, change your clothing immediately. Wipe up any fuel that spills.

  • Never overfill the fuel tank. Replace the fuel cap and tighten it securely.

Adding Fuel

Recommended Fuel

  • For best results, use only clean, fresh (less than 30 days old), unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method).

  • Ethanol: Gasoline with up to 10% ethanol (gasohol) or 15% MTBE (methyl tertiary butyl ether) by volume is acceptable. Ethanol and MTBE are not the same. Gasoline with 15% ethanol (E15) by volume is not approved for use. Never use gasoline that contains more than 10% ethanol by volume, such as E15 (contains 15% ethanol), E20 (contains 20% ethanol), or E85 (contains up to 85% ethanol). Using unapproved gasoline may cause performance problems and/or engine damage which may not be covered under warranty.

  • Do not use gasoline containing methanol.

  • Do not store fuel either in the fuel tank or fuel containers over the winter unless you use a fuel stabilizer.

  • Do not add oil to gasoline.

Using Stabilizer/Conditioner

Use fuel stabilizer/conditioner in the machine to keep the fuel fresh longer when used as directed by the fuel-stabilizer manufacturer.

Important: Do not use fuel additives containing methanol or ethanol.

Add the amount of fuel stabilizer/conditioner to fresh fuel as directed by the fuel-stabilizer manufacturer.

Filling the Fuel Tank

  1. Park the machine on a level surface, disengage the PTO, move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake.

  2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

  3. Clean around the fuel-tank cap and remove the cap.

  4. Fill the fuel tank to the bottom of the filler neck.

    Note: Do not fill the fuel tank completely full. The empty space in the tank allows the fuel to expand.

  5. Install the fuel-tank cap securely. Wipe up any spilled fuel.

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Performing Daily Maintenance

Before starting the machine each day, perform the Each Use/Daily procedures listed in .

Breaking in a New Machine

New engines take time to develop full power. Mower decks and drive systems have higher friction when new, placing additional load on the engine. Allow 40 to 50 hours of break-in time for new machines to develop full power and best performance.

Using the Safety-Interlock System

Danger

If safety-interlock switches are disconnected or damaged, the machine could operate unexpectedly, which will result in serious injury or death.

  • Do not tamper with the interlock switches.

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

Understanding the Safety-Interlock System

The safety-interlock system is designed to prevent PTO from engaging unless you do 1 of the following:

  • Move either motion-control lever to the center, unlocked position.

  • Press the ON position on the PTO switch.

    The safety-interlock system is designed to stop the blades/attachment if you move or release both motion-control levers into the NEUTRAL-LOCK position.

    The hour meter has symbols to notify the user when each interlock component is active. When the component is active, a triangle lights up in the corresponding square (Figure 8).

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Testing the Safety-Interlock System

Maintenance Service IntervalMaintenance Procedure
Before each use or daily
  • Check the safety-interlock system.
  • Test the safety-interlock system before you use the machine each time.

    Note: If the safety system does not operate as described below, have an Authorized Service Dealer repair the safety system immediately.

    1. Start the engine; refer to Starting the Engine.

    2. With the parking brake still engaged, move the motion-control levers to the center, unlocked position.

      Note: The blades/attachment should stop and the engine should stop running.

    3. Start the engine and disengage the parking brake.

    4. Move either motion-control lever to the center, unlocked position.

    5. Continue holding the motion-control lever in the center, unlocked position and press the ON position on the PTO switch.

      Note: The clutch and blades/attachment should engage.

    6. Move or release the motion-control levers into the NEUTRAL-LOCK position.

      Note: The blades/attachment should stop and the engine should continue to run.

    7. Press the OFF position on the PTO switch and move either motion-control lever to the center, unlocked position.

    8. Continue holding the motion-control lever in the center, unlocked position and press the ON position on the PTO switch.

      Note: The clutch and blades/attachment should engage.

    9. Press the OFF position on the PTO switch.

      Note: The blades/attachment should stop.

    10. With the engine running, press the ON position on the PTO switch without holding either motion-control lever to the center, unlocked position.

      Note: The blades/attachment should not engage.

    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.

    • 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 while ill, tired, or under the influence of alcohol or drugs.

    • Never carry passengers on the machine and keep bystanders and pets away from the machine during operation.

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

    • Wet grass or leaves can cause serious injury if you slip and contact the blade. Avoid mowing in wet conditions.

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

    • Ensure that you have good footing while using this machine, especially when backing up.

    • Keep your hands and feet away from the cutting units. Keep clear of the discharge opening at all times.

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

    • Use extreme care when approaching blind corners, shrubs, trees, or other objects that may block your view.

    • Stop the blades whenever you are not mowing.

    • Stop the machine, remove the ignition key, and wait for all moving parts to stop before inspecting the mower deck or 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 cutting unit and shut off the engine 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 leaving the operating position (including to empty the catchers or to unclog the chute), do the following:

      • Park the machine on a level surface.

      • Disengage the power take-off.

      • Engage the parking brake.

      • Shut off the engine and remove the ignition key.

      • Wait for all moving parts to stop.

    • Shut off the machine and disengage the drive to the cutting unit in the following situations:

      • Before fueling

      • Before clearing blockages

      • Before checking, cleaning, or maintaining the cutting unit

      • After striking a foreign object or if an abnormal vibration occurs. Inspect the cutting unit for damage and make repairs before starting and operating the machine

      • Before leaving the operating position

    • Do not use the machine as a towing vehicle.

    • Use only accessories and attachments approved by The Toro® Company.

    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. Before using the machine on a slope, do the following:

      • Review and understand the slope instructions in the manual and on the machine.

      • Evaluate the site conditions of the day to determine if the slope is safe for machine operation. Use common sense and good judgment when performing this evaluation. Changes in the terrain, such as moisture, can quickly affect the operation of the machine on a slope.

    • Operate across slopes, never up and down. Avoid operation on excessively steep or wet slopes.

    • Identify hazards at the base of the slope. Do not operate the machine near drop-offs, ditches, embankments, water, or other hazards. The machine could suddenly roll over if a wheel goes over the edge or the edge collapses. Keep a safe distance (twice the width of the machine) between the machine and any hazard. Use a walk-behind machine or a handheld tool to operate in these areas.

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

    • Do not operate a machine under any conditions where traction, steering or stability is in question. 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. The machine can slide even if the drive wheels are stopped.

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

    • Use extra care while operating with accessories or attachments. These can change the stability of the machine and cause a loss of control. Follow directions for counterweights.

    • If you lose control of the machine, step off and away from the direction of travel of the machine.

    Starting the Engine

    Important: Do not engage the starter for more than 5 seconds at a time. If the engine fails to start, wait 15 seconds between attempts. Failure to follow these instructions can burn out the starter motor.

    Note: You may need to repeat the cycle for starting the engine when you start it for the first time after you have filled a completely empty fuel system with fuel.

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    Shutting Off the Engine

    Caution

    Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended.

    Always remove the key and engage the parking brake when leaving the machine unattended.

    Let the engine idle at fast throttle (rabbit) for 60 seconds before turning the key switch to the OFF position.

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    Important: Make sure that the fuel-shutoff valve is closed before transporting or storing the machine to prevent a fuel leak. Before storing the machine, disconnect the spark plug(s) to prevent the possibility of accidental starting.

    Operating the Parking Brake

    Always engage the parking brake when you shut off the machine or leave it unattended. Before each use, check the parking brake for proper operation.

    If the parking brake does not hold securely, adjust it; refer to Adjusting the Brakes.

    Pull the parking-brake lever rearward to engage it (Figure 11).

    Push the parking-brake lever forward to disengage it.

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    Operating the Mower-Blade-Control Switch (PTO)

    Use the blade-control switch (PTO) in conjunction with the motion-control levers to engage and disengage the mower blades.

    Danger

    The rotating blades under the mower deck are dangerous. Blade contact will cause serious injury or death.

    Do not put your hands or feet under the mower or mower deck when the blades are engaged.

    Danger

    An uncovered discharge opening allows objects to be thrown toward you or bystanders. Also, contact with the blade could occur. Thrown objects or blade contact will cause serious injury or death.

    Do not operate the mower with the discharge deflector raised, removed, or altered unless a grass collection system or mulch kit is in place and working properly.

    Engaging the Mower Blades (PTO)

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    Disengaging the Mower Blades (PTO)

    Figure 13 and Figure 14 show 2 ways to disengage the mower blades.

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    Note: If you disengage the mower blades by releasing the motion-control levers, you can engage the blades again by pressing the ON position of the switch (Figure 12) without pressing the OFF position first.

    Operating the Throttle

    You can move the throttle control between FAST and SLOW positions (Figure 15).

    Always use the FAST position when engaging the PTO.

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    Operating the Choke

    Use the choke to start a cold engine.

    1. Pull up the choke knob to engage the choke before using the key switch (Figure 16).

    2. Push down the choke knob to disengage the choke after the engine has started (Figure 16).

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    Important: Do not operate the machine with the choke engaged for extended periods of time or while the engine is warm.

    Using the Platform

    You can use the machine with the platform in the up or down position. It is your preference on which position to use.

    Warning

    The operator platform is heavy and may cause injury when you raise or lower it. Carefully lower or raise the operator platform, as suddenly dropping it could injure you.

    • Do not put your hands or fingers in the platform-pivot area when lowering or raising the operator platform.

    • Make sure that the platform is supported when you pull the latch pin out.

    • Make sure that the latch secures the platform when folding it up. Push it tight against the cushion for the latch pin to lock into place.

    • Keep bystanders away from the machine when raising or lowering the platform.

    Operate the machine with the platform up for the following conditions:

    • Near drop-offs

    • In small areas where the machine is too large

    • In areas with low-hanging branches or obstacles

    • Loading the machine for transport

    • Driving up slopes

    Operate the machine with the platform down for the following conditions:

    • Using the machine in most areas

    • Driving across slopes

    • Driving down slopes

    To raise the platform, pull out the knob and lift the platform. Push the platform tight against the cushion for the latch pin to lock it into place.

    To lower the platform, push the platform forward against the cushion to release pressure on the latch pin, then pull the knob out and lower the platform.

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    Driving the Machine

    Important: Back the machine over curbs, 1 wheel at a time; driving it forward over curbs could damage the machine.

    Caution

    Positioning one lever too far in front of the other causes the machine to spin very rapidly. As a result, you may lose control of the machine, causing personal injury to you and damage to the machine.

    Slow down the machine before making sharp turns.

    1. Disengage the parking brake.

    2. Move the motion-control levers down to the center, unlocked position.

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    3. Slowly push the motion-control levers forward or rearward. Move 1 lever farther than the other lever to turn.

      Note: The farther you move the motion-control levers, the faster the machine moves in that direction.

    4. To stop, move the motion-control levers back to the NEUTRAL position.

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    Side Discharging or Mulching the Grass

    This machine has a hinged grass deflector that disperses clippings to the side and down toward the turf.

    Danger

    Without the grass deflector, discharge cover, or complete grass catcher assembly mounted in place, you and bystanders are exposed to blade contact and thrown debris. Contact with rotating mower blade(s) and thrown debris will cause injury or death.

    • Do not remove the grass deflector from the machine, because the grass deflector routes material down toward the turf. If the grass deflector is ever damaged, replace it immediately.

    • Never try to clear the discharge area or mower blades unless the power takeoff (PTO) is off. Rotate the key to the OFF position and remove the key.

    Adjusting the Height-of-Cut

    The height-of-cut can be adjusted from 38 to 127 mm (1-1/2 to 5 inches) in 6 mm (1/4 inch) increments.

    Note: Using a height-of-cut under 51 mm (2 inches) increases the wear on the mower-deck belt. Use a height-of-cut that is greater than 51 mm (2 inches) whenever possible.

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    Adjusting the Anti-Scalp Rollers

    Whenever you change the height-of-cut, adjust the height of the anti-scalp rollers.

    1. Disengage the blade-control switch (PTO), move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Remove the nut and bolt position the anti-scalp rollers and install the nut and bolt.

    4. Ensure that the spacers and bushings are installed (Figure 21).

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    Adjusting the Flow Baffle

    You can adjust the mower-discharge flow for different types of mowing conditions. Position the cam lock and baffle to provide the best quality of cut.

    1. Disengage the PTO, move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. To adjust the baffle, loosen the knob (Figure 22).

    4. Adjust the baffle and knob in the slot to the desired discharge flow and tighten the knob.

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    Positioning the Flow Baffle

    The following figures are for recommended use only. Adjustments vary by grass type, moisture content, and the height of the grass.

    Note: If the engine power draws down and the mower ground speed is the same, open the baffle.

    Position A

    This is the full, rear position (see Figure 23). Use this position for the following:

    • In short, light grass mowing conditions

    • In dry conditions

    • Smaller grass clippings

    • Propels grass clippings farther away from the mower

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    Position B

    Use this position when bagging (Figure 24).

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    Position C

    This is the full, open position (Figure 25). Use this position for the following:

    • In tall, dense grass mowing conditions

    • In wet conditions

    • Lowers the engine-power consumption

    • Allows increased ground speed in heavy conditions

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    Using Weights

    • Install weights to improve balance. You can add or remove weights to create optimized performance under different operating conditions and for your preference.

    • Add or remove weights 1 at a time until you achieve the desired handling and balance.

    • Refer to the Operator’s Manual of attachments for recommended weights.

    Note: Contact an Authorized Service Dealer to order a weight kit.

    Warning

    Excessive weight changes can affect the handling and operation of the machine. This could cause serious injury to you or bystanders.

    • Make weight changes in small increments only.

    • Evaluate the machine after each weight change to ensure that you can operate the machine safely.

    After Operation

    After Operation Safety

    General Safety

    • Always shut off the machine, remove the ignition key, wait for all moving parts to stop, and 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.

    • Shut off the fuel before storing or transporting the machine.

    • Disengage the PTO whenever you are transporting or not using 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.

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

    • Tie the machine down securely using straps, chains, cable, or ropes. Both front and rear straps should be directed down and outward from the machine.

    Using the Fuel-Shutoff Valve

    Close the fuel-shutoff valve for transport, maintenance, and storage (Figure 26).

    Ensure that the fuel-shutoff valve is open when starting the engine.

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    Pushing the Machine by Hand

    The bypass valves allow you to push the machine by hand without the engine running.

    Important: Do not start or operate the machine with the bypass valves open. Damage to system may occur.

    1. Park the machine on a level surface, disengage the PTO, move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Raise the platform.

    4. Move both bypass levers fully rearward.

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    5. Disengage the parking brake.

    6. Push the machine to the desired location.

      Important: Always push the machine by hand. Do not tow the machine, because hydraulic damage may occur.

    7. Immediately after moving the machine, engage the parking brake.

    8. Move both bypass levers fully forward.

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    Transporting the Machine

    Use a heavy-duty trailer or truck to transport the machine. Use a full-width ramp. Ensure that the trailer or truck has all the necessary brakes, lighting, and marking as required by law. Please carefully read all the safety instructions. Knowing this information could help you or bystanders avoid injury. Refer to your local ordinances for trailer and tie-down requirements.

    Warning

    Driving on the street or roadway without turn signals, lights, reflective markings, or a slow-moving-vehicle emblem is dangerous and can lead to accidents, causing personal injury.

    Do not drive the machine on a public street or roadway.

    Warning

    Loading a machine onto a trailer or truck increases the possibility of backward tip-over and could cause serious injury or death.

    • Use only full-width ramps; do not use individual ramps for each side of the machine.

    • Ensure that the length of ramp is at least 4 times as long as the height of the trailer or truck bed to the ground.

    • Use extreme caution when operating a machine on a ramp.

    • Back the machine up the ramp and walk it forward down the ramp.

    • Avoid sudden acceleration or deceleration while driving the machine on a ramp as this could cause a loss of control or a tip-over situation.

    Selecting a Trailer

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    Loading the Machine

    1. If using a trailer, connect it to the towing vehicle and connect the safety chains.

    2. If applicable, connect the trailer brakes and lights.

    3. Lower the ramp (Figure 29).

    4. Raise the platform.

      Important: Always keep the platform up when loading and unloading the machine.

    5. Back the machine up the ramp.

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    6. Shut off the machine, remove the key, and engage the parking brake.

    7. Tie down the machine near the front caster wheels, or front frame holes, and the rear bumper holes with straps, chains, cable, or ropes (Figure 31). Refer to local regulations for tie-down requirements.

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    Maintenance

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

    Caution

    If you leave the ignition key in the switch, someone could accidently start the engine and serious injure you or other bystanders.

    Remove the ignition key from the switch before you perform any maintenance.

    Maintenance Safety

    • Before adjusting, cleaning, servicing, or leaving the machine, do the following:

      • Park the machine on a level surface.

      • Disengage the drives.

      • Engage the parking brake.

      • Shut off the engine and remove the ignition key.

      • Wait for all moving parts to stop.

      • Allow machine components to cool before performing maintenance.

    • Do not allow untrained personnel to service the machine.

    • Keep your hands and feet away from moving parts. If possible, do not make adjustments with the engine running.

    • Carefully release pressure from components with stored energy.

    • Check the parking brake operation frequently. Adjust and service the brake as needed.

    • Never tamper with safety devices. Check their proper operation regularly.

    • Clean grass and debris from the cutting unit, drives, muffler, and engine to help prevent fires. Clean up oil or fuel spills.

    • Check the grass catcher components frequently and replace them when they are worn or damaged.

    • Do not rely on a hydraulic system to support the machine; support the machine with jack stands whenever you raise the machine.

    • Keep all parts in good working condition and all hydraulic fittings tight. Replace all worn, damaged, or missing parts and decals. Keep all fasteners tight to ensure that the machine is in safe working condition.

    • To ensure optimum performance and continued safety certification of the machine, 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.

    Recommended Maintenance Schedule(s)

    Maintenance Service IntervalMaintenance Procedure
    After the first 8 hours
  • Change the engine oil.
  • Check the hydraulic-fluid level.
  • After the first 50 hours
  • Change the hydraulic filters and hydraulic fluid.
  • After the first 100 hours
  • Check the wheel-lug nuts.
  • Before each use or daily
  • Check the safety-interlock system.
  • Check the engine-oil level.
  • Clean the air-intake screen (more often in dirty or dusty conditions).
  • Test the parking brake.
  • Inspect the blades.
  • Clean under the mower deck.
  • Every 50 hours
  • Check the spark arrester (if equipped).
  • Check the tire pressure.
  • Check the hydraulic-fluid level.
  • Every 100 hours
  • Change the engine oil(more often in dirty or dusty conditions).
  • For Kawasaki engines—replace or clean and gap the spark plug.
  • Check the battery.
  • Check the clutch.
  • Check and clean the engine cooling fins and shrouds (more often in dirty or dusty conditions).
  • Check the mower-deck belt(s).
  • Every 200 hours
  • Change the engine-oil filter(more often in dirty or dusty conditions).
  • Every 250 hours
  • Replace the primary air filter(more often in dirty or dusty conditions).
  • Check the safety air filter(more often in dirty or dusty conditions).
  • Every 400 hours
  • Check the transmission belt.
  • Every 500 hours
  • Replace the safety air filter(more often in dirty or dusty conditions).
  • Adjust the caster-pivot bearing.
  • Change the hydraulic filters and hydraulic fluid.
  • Every 800 hours
  • Replace the fuel filter.
  • Every 1,000 hours
  • Replace the transmission belt.
  • Before storage
  • Paint chipped surfaces.
  • Perform all maintenance procedures listed above before storage.
  • Yearly
  • Grease the front caster pivots (more often in dirty or dusty conditions).
  • Grease the caster-wheel hubs.
  • Grease the motion controls.
  • Apply anti-seize compound to the cushion knobs.
  • Important: Refer to your engine owner’s manual for additional maintenance procedures.

    Pre-Maintenance Procedures

    Releasing the Cushion for Rear Access

    You can release the cushion for rear access to the machine for maintenance or adjustment.

    1. Lower the platform.

    2. Loosen the twist knobs on each side of the machine (Figure 32).

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    3. Remove the cushion and lower it to the platform.

    4. Perform any maintenance or adjustment on the machine.

    5. Raise the cushion, and slide it onto the pins on both sides of the machine.

    6. Tighten the twist knobs.

    Opening the Engine Guard

    Rotate the engine guard forward as shown in Figure 33.

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    Lubrication

    Greasing the Machine

    Grease with No. 2 lithium or molybdenum grease.

    1. Disengage the PTO and set the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Clean the grease fittings with a rag.

      Note: Make sure to scrape any paint off the front of the fitting(s).

    4. Connect a grease gun to the fitting.

    5. Pump grease into the fittings until grease begins to ooze out of the bearings.

    6. Wipe up any excess grease.

    Greasing the Front Caster Pivots

    Maintenance Service IntervalMaintenance Procedure
    Yearly
  • Grease the front caster pivots (more often in dirty or dusty conditions).
  • Grease type: Lithium or molybdenum grease

    1. Remove the dust cap and adjust the caster pivots; refer to Adjusting the Caster-Pivot Bearing.

      Note: Keep the dust cap off until you have finished greasing the caster pivots.

    2. Remove the hex plug.

    3. Thread a grease fitting (1/4 inch–28 taper thread) into the hole.

    4. Pump grease into the fitting until it oozes out around the top bearing.

    5. Remove the grease fitting from the hole.

    6. Install the hex plug and dust cap.

    Greasing the Caster-Wheel Hubs

    Maintenance Service IntervalMaintenance Procedure
    Yearly
  • Grease the caster-wheel hubs.
  • Grease type: Lithium or molybdenum grease

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Remove the caster wheel from the caster forks.

    4. Remove the seal guards from the wheel hub (Figure 34).

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    5. Remove 1 spacer nut from the axle assembly in the caster wheel.

      Note: Thread-locking adhesive has been applied to lock the spacer nuts to the axle. Remove the axle (with the other spacer nut still assembled to it) from the wheel assembly.

    6. Pry out the seals, inspect bearings for wear or damage, and replace them if necessary.

    7. Pack the bearings with a general-purpose grease.

    8. Insert 1 bearing and 1 new seal into the wheel.

      Note: You must replace the seals.

    9. If both spacer nuts in the axle assembly have been removed (or broken loose), apply a thread-locking adhesive to 1 spacer nut, threading it onto the axle with the wrench flats facing outward.

      Note: Do not thread the spacer nut all of the way onto the end of the axle. Leave approximately 3 mm (1/8 inch) from the outer surface of the spacer nut to the end of the axle inside the nut.

    10. Insert the assembled nut and axle into the wheel on the side of the wheel with the new seal and bearing.

    11. With the open end of the wheel facing up, fill the area inside the wheel around the axle full of general-purpose grease.

    12. Insert the second bearing and the new seal into the wheel.

    13. Apply a thread-locking adhesive to the second spacer nut, threading it onto the axle with the wrench flats facing outward.

    14. Torque the nut to 8 to 9 N∙m (71 to 80 in-lb), loosen it, then torque it to 2 to 3 N∙m (20 to 25 in-lb).

      Note: Make sure that the axle does not extend beyond either nut.

    15. Install the seal guards over the wheel hub and insert the wheel into the caster fork.

    16. Install the caster bolt and tighten the nut fully.

    Important: To prevent seal and bearing damage, check the bearing adjustment often by spinning the caster wheel. The wheel should not spin freely (more than 1 or 2 revolutions) or have any side play. If the wheel spins freely, adjust the torque on the spacer nut until there is a slight amount of drag, and apply thread-locking adhesive.

    Lubricating the Motion Controls

    Maintenance Service IntervalMaintenance Procedure
    Yearly
  • Grease the motion controls.
  • Apply anti-seize compound to the cushion knobs.
  • Grease the operator-presence-control balljoint and the motion-control bushing for both levers.

    Note: Use an oil drip between the lever brackets to grease the bushing, located in the pivot tube.

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    Engine Maintenance

    Engine Safety

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

    • Keep your hands, feet, face, clothing, and other body parts away from the muffler and other hot surfaces.

    Servicing the Air Cleaner

    Maintenance Service IntervalMaintenance Procedure
    Every 250 hours
  • Replace the primary air filter(more often in dirty or dusty conditions).
  • Check the safety air filter(more often in dirty or dusty conditions).
  • Every 500 hours
  • Replace the safety air filter(more often in dirty or dusty conditions).
  • Note: Service the air cleaner more frequently if operating conditions are extremely dusty or sandy.

    Removing the Filters

    1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Release the latches on the air cleaner and pull the air-cleaner cover off the air-cleaner body (Figure 36).

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    4. Clean the inside of the air-cleaner cover with compressed air.

    5. Gently slide the primary filter out of the air-cleaner body (Figure 36).

      Note: Avoid knocking the filter into the side of the body.

    6. Remove the safety filter only to replace it.

    Inspecting the Filters

    1. Inspect the safety filter. If it is dirty, replace both the safety and primary filters.

      Important: Do not attempt to clean the safety filter. If the safety filter is dirty, then the primary filter is damaged.

    2. Inspect the primary filter for damage by looking into the filter while shining a bright light on the outside of the filter. If the primary filter is dirty, bent, or damaged, replace it.

      Note: Holes in the filter appear as bright spots. Do not clean the primary filter.

    Installing the Filters

    Important: To prevent engine damage, always operate the engine with both air filters and the cover installed.

    1. If you are installing new filters, check each filter for shipping damage.

      Note: Do not use a damaged filter.

    2. If you are replacing the inner filter, carefully slide it into the filter body (Figure 36).

    3. Carefully slide the primary filter over the safety filter (Figure 36).

      Note: Ensure that the primary filter is fully seated by pushing on the outer rim while installing it.

      Important: Do not press on the soft, inside area of the filter.

    4. Install the air-cleaner cover and secure the latches (Figure 36).

    Servicing the Engine Oil

    Maintenance Service IntervalMaintenance Procedure
    After the first 8 hours
  • Change the engine oil.
  • Before each use or daily
  • Check the engine-oil level.
  • Every 100 hours
  • Change the engine oil(more often in dirty or dusty conditions).
  • Every 200 hours
  • Change the engine-oil filter(more often in dirty or dusty conditions).
  • Engine-Oil Specifications

    Oil Type: Detergent oil (API service SF, SG, SH, SJ, or SL)

    Crankcase Capacity: 1.9 L (64 fl oz) with a filter change; 1.7 L (57 fl oz) with no filter change

    Viscosity: See the table below.

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    Note: Use of multi-grade oils (5W-20, 10W-30, or 10W-40) increases oil consumption. Check the oil level more frequently when using them.

    Checking the Engine-Oil Level

    Note: Check the oil when the engine is cold.

    Important: If you overfill or underfill the engine crankcase with oil and run the engine, you may damage the engine.

    1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

      Note: Ensure that the engine is cool so that the oil has had time to drain into the sump.

    3. To keep dirt, grass clippings, etc., out of the engine, clean the area around the oil-fill cap and dipstick before removing it (Figure 38).

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    Changing the Engine Oil

    Note: Dispose of the used oil at a recycling center.

    1. Start the engine and let it run for 5 minutes.

      Note: This warms the oil so that it drains better.

    2. Park the machine so that the drain side is slightly lower than the opposite side to ensure that the oil drains completely.

    3. Disengage the blade-control switch (PTO) and engage the parking brake.

    4. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    5. Drain the oil from the engine (Figure 39).

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    6. Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark (Figure 40).

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    7. Start the engine and drive to a flat area.

    8. Check the oil level again.

    Changing the Engine-Oil Filter

    1. Drain the oil from the engine; refer to Changing the Engine Oil.

    2. Change the engine-oil filter (Figure 41).

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      Note: Ensure that the oil-filter gasket touches the engine, and then turn the oil filter an extra 3/4 turn.

    3. Fill the crankcase with the proper type of new oil; refer to Engine-Oil Specifications.

    Servicing the Spark Plug(s)

    Maintenance Service IntervalMaintenance Procedure
    Every 100 hours
  • For Kawasaki engines—replace or clean and gap the spark plug.
  • Ensure that the air gap between the center and side electrodes is correct before installing the spark plug. Use a spark plug wrench for removing and installing the spark plug and a gapping tool or feeler gauge to check and adjust the air gap. Install a new spark plug if necessary.

    Type of Spark Plug: NGK® BPR5ES or equivalent

    Air Gap: 0.75 mm (0.03 inch)

    Removing the Spark Plug(s)

    1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Clean the area around the base of the plug to keep dirt and debris out of the engine.

    4. Locate and remove the spark plug(s) as shown in Figure 42.

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    Checking the Spark Plug(s)

    Important: Do not clean the spark plug(s). Always replace the spark plug(s) when it has a black coating, worn electrodes, an oily film, or cracks.

    If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the insulator usually means the air cleaner is dirty.

    Set the gap to 0.75 mm (0.03 inch).

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    Installing the Spark Plug(s)

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    Checking the Spark Arrester

    For Machines with a Spark Arrester
    Maintenance Service IntervalMaintenance Procedure
    Every 50 hours
  • Check the spark arrester (if equipped).
  • Warning

    Hot exhaust-system components may ignite fuel vapors even after you shut off the engine. Hot particles exhausted during engine operation may ignite flammable materials, resulting in personal injury or property damage.

    Do not refuel or run the engine unless the spark arrester is installed.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Wait for the muffler to cool.

    4. If you see any breaks in the screen or welds, replace the arrester.

    5. If the screen is plugged, remove the arrester, shake loose particles out of the arrester, and clean the screen with a wire brush (soak the screen in solvent if necessary).

    6. Install the arrester on the exhaust outlet.

    Fuel System Maintenance

    Danger

    In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property.

    Refer to Fuel Safety for a complete list of fuel related precautions.

    Draining the Fuel Tank

    You can drain the fuel tank by removing it and pouring the fuel out of the fill neck; refer to Removing the Fuel Tank. You can also drain the fuel tank by using a siphon in the following procedure.

    Danger

    In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property.

    • Drain fuel from the fuel tank when the engine is cold. Do this outdoors in an open area. Wipe up any fuel that spills.

    • Never smoke when draining fuel, and stay away from an open flame, or where a spark may ignite the fuel fumes.

    1. Disengage the PTO, move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Clean around the fuel cap to prevent debris from getting into the fuel tank (Figure 45).

    4. Remove the fuel cap.

    5. Insert a syphon pump into the fuel tank.

    6. Using the syphon pump, drain the fuel into a fuel container.

    7. Wipe up any spilled fuel.

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    Removing the Fuel Tank

    1. Lower the platform.

    2. Release the cushion; refer to Releasing the Cushion for Rear Access.

    3. Remove the cross bracket.

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    4. Remove the fuel tank and set it on the operator platform.

      Note: If you want to move the fuel tank further from the machine, remove the fuel and vent lines from the top of the tank.

    Replacing the Fuel Filter

    Maintenance Service IntervalMaintenance Procedure
    Every 800 hours
  • Replace the fuel filter.
  • Do not install a dirty filter if it is removed from the fuel line.

    Note: Wipe up any spilled fuel.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Close the fuel-shutoff valve; refer to Using the Fuel-Shutoff Valve.

    4. Replace the fuel filter as shown in Figure .

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    Electrical System Maintenance

    Electrical System Safety

    • Disconnect the battery or remove the spark-plug wire before making any repairs. Disconnect the negative terminal first and the positive terminal last. Connect the positive terminal first and 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.

    Servicing the Battery

    Maintenance Service IntervalMaintenance Procedure
    Every 100 hours
  • Check the battery.
  • Always keep the battery clean and fully charged. Use a paper towel to clean the battery case. If the battery terminals are corroded, clean them with a solution of four parts water and 1 part baking soda. Apply a light coating of grease to the battery terminals to prevent corrosion.

    Voltage: 12 V

    Removing the Battery

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Open the engine guard.

    4. Remove the battery as shown.

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    Charging the Battery

    Warning

    Charging the battery produces gasses that can explode.

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

    Important: Always keep the battery fully charged (1.265 specific gravity) to prevent battery damage when the temperature is below 0°C (32°F).

    1. Remove the battery from the chassis; refer to Removing the Battery.

    2. Check the electrolyte level.

    3. Ensure that the filler caps are installed on the battery.

    4. Charge the battery for 1 hour at 25 to 30 A or 6 hours at 4 to 6 A.

    5. When the battery is fully charged, unplug the charger from the electrical outlet, and disconnect the charger leads from the battery posts (Figure 49).

    6. Install the battery onto the machine and connect the battery cables; refer to Installing the Battery.

      Note: Do not run the machine with the battery disconnected; electrical damage may occur.

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    Installing the Battery

    1. Install the battery as shown.

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    2. Close the engine guard.

    Servicing the Fuses

    The electrical system is protected by fuses. It requires no maintenance. If a fuse blows, check the component or circuit for a malfunction or short.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Release the operator cushion from the rear of the machine.

    4. If you need to access the charge fuse, remove the fuel tank; refer to Removing the Fuel Tank.

    5. Pull out the fuse and replace it (Figure 51).

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    6. Install the fuel tank, if removed; refer to Removing the Fuel Tank.

    7. Install the operator cushion.

    Drive System Maintenance

    Adjusting the Tracking

    If you push both motion-control levers forward the same distance and the machine pulls to 1 side, adjust the tracking as follows.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Release the cushion from the rear of the machine; refer to Releasing the Cushion for Rear Access.

      Note: For easier access, you can also remove the fuel tank; refer to Removing the Fuel Tank.

    4. Loosen the nut.

    5. Rotate the left control rod in quarter-turn increments until the machine tracks straight.

      Note: If the machine pulls to the right, shorten the control rod by rotating it to the right. If the machine pulls to the left, lengthen the rod by rotating it to the left.

      Note: Adjust only the left control rod to match the left wheel speed to the right wheel speed. Do not adjust the right wheel speed, as this positions the right motion-control lever out of the center for the control panel neutral-lock slot.

      Important: Do not rotate the control rod too far, as this may cause the machine to creep in neutral.

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    6. Tighten the nut.

    7. Check for proper tracking, and adjust the rod as necessary.

      Note: If you are unable to achieve proper tracking by adjusting the left control rod, contact your Authorized Service Dealer.

    8. Check that the machine does not creep from the neutral position with the park brakes disengaged.

    9. Install the fuel tank, if you removed it.

    10. Install the cushion.

    Checking the Tire Pressure

    Maintenance Service IntervalMaintenance Procedure
    Every 50 hours
  • Check the tire pressure.
  • Maintain the air pressure in the rear tires at 83 to 97 kPa (12 to 14 psi).

    Important: Uneven tire pressure can cause an uneven cut.

    Note: The front tires are semi-pneumatic tires and do not require air-pressure maintenance.

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    Adjusting the Caster-Pivot Bearing

    Maintenance Service IntervalMaintenance Procedure
    Every 500 hours
  • Adjust the caster-pivot bearing.
    1. Disengage the blade-control switch (PTO), move the motion control levers to the NEUTRAL-LOCK position, and set the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Remove the dust cap from the caster and tighten the locknut (Figure 54).

    4. Tighten the locknut until the spring washers are flat, and then back off a 1/4 turn to properly set the preload on the bearings (Figure 54).

      Important: Make sure that the spring washers are installed correctly as shown in Figure 54.

    5. Install the dust cap (Figure 54).

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    Servicing the Caster Wheels and Bearings

    The caster wheels rotate on a roller bearing supported by a spanner bushing. If the bearing is kept well lubricated, wear will be minimal. Failure to keep the bearing well lubricated causes rapid wear. A wobbly caster wheel usually indicates a worn bearing.

    1. Remove the locknut and wheel bolt holding the caster wheel to the caster fork (Figure 55).

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    2. Remove 1 bushing, then pull the spanner bushing and roller bearing out of the wheel hub (Figure 55).

    3. Remove the other bushing from the wheel hub and clean any grease and dirt from the wheel hub (Figure 55).

    4. Inspect the roller bearing, bushings, spanner bushing and the inside of the wheel hub for wear.

      Note: Replace any damaged or worn parts (Figure 55).

    5. Place 1 bushing into the wheel hub (Figure 55).

    6. Grease the roller bearing and spanner bushing, and slide them into the wheel hub (Figure 55).

    7. Place the second bushing into the wheel hub (Figure 55).

    8. Install the caster wheel into the caster fork and secure it with the wheel bolt and locknut (Figure 55).

    9. Tighten the locknut until the spanner bushing bottoms against the inside of the caster forks (Figure 55).

    10. Grease the fitting on the caster wheel.

    Removing the Clutch Shim

    Maintenance Service IntervalMaintenance Procedure
    Every 100 hours
  • Check the clutch.
  • When the clutch brake has worn to the point where the clutch no longer engages consistently, you can remove the shim to extend the clutch life (Figure 56).

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    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Using an air compressor, blow out any debris under the brake pole and around the brake spacers.

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    4. Check the condition of the wire-harness leads, connectors, and terminals. Clean or repair them as necessary.

    5. Verify that 12 V is present at the clutch connector when the you engage the PTO switch.

    6. Measure the gap between the rotor and armature. If the gap is greater than 1 mm (0.04 inch), proceed with the following steps:

      1. Loosen both brake mounting bolts 1/2 to 1 full turn as shown in Figure 58.

        Note: Do not remove the brake pole from the field shell/armature. The brake pole has worn to match the armature and needs to continue to match after you remove the shim to ensure the proper brake torque.

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      2. Using needle-nose pliers, or by hand, remove the shim.

        Note: Do not discard the shim until you confirm that the clutch functions properly.

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      3. Using a pneumatic line, blow out any debris under the brake pole and around the brake spacers.

      4. Torque each bolt (M6 x 1) to 12.3 to 13.7 N∙m (9.5 to 10.5 ft-lb).

      5. Using a 0.010 inch thick-feeler gauge, verify that a gap is present between the rotor and armature face on both sides of the brake pole as shown in Figure 60 and Figure 61.

        Note: Due to the way the rotor and armature faces wear (peaks and valleys), it is sometimes difficult to measure the true gap.

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        • If the gap is less than 0.010 inch, then install the shim.

        • If the gap is sufficient, proceed to the safety check in step 6.

      6. Perform the following safety check:

        1. Start the engine from the operator’s position.

        2. Make sure that the blades do not engage when the PTO switch is in the OFF position and the clutch is disengaged.

          Note: If the clutch does not disengage, install the shim.

        3. Engage and disengage the PTO switch 10 consecutive times to ensure that the clutch is functioning properly.

    Checking the Wheel-Lug Nuts

    Maintenance Service IntervalMaintenance Procedure
    After the first 100 hours
  • Check the wheel-lug nuts.
  • Check and torque the wheel-lug nuts to 115 to 142 N∙m (85 to 105 ft-lb).

    Cooling System Maintenance

    Cleaning the Air-Intake Screen

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Clean the air-intake screen (more often in dirty or dusty conditions).
  • Before each use, remove any buildup of grass, dirt, or other debris from the cylinder and cylinder-head cooling fins, air-intake screen on the flywheel end, and the carburetor-governor levers and linkage. This helps ensure adequate cooling of the engine and the correct engine speed, and it reduces the possibility of overheating or mechanical damage to the engine.

    Cleaning the Cooling System

    Maintenance Service IntervalMaintenance Procedure
    Every 100 hours
  • Check and clean the engine cooling fins and shrouds (more often in dirty or dusty conditions).
    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Remove the air-intake screen and fan housing (Figure 62).

    4. Clean the debris and grass from the engine parts.

    5. Install the air-intake screen and fan housing (Figure 62).

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    Brake Maintenance

    Testing the Parking Brake

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Test the parking brake.
  • Before each use, test the parking brake on both a level surface and slope.

    Always engage the parking brake when you stop the machine or leave it unattended. If the parking brake does not hold securely, adjust it.

    1. Disengage the PTO and engage the parking brake

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Disengage the parking brake.

    4. Engage the brake lever and ensure that the machine does not move.

    5. Adjust the brake if needed.

    Adjusting the Brakes

    1. Remove the fuel tank; refer to Removing the Fuel Tank.

    2. Loosen the bolt on the cable clamp on the left side of the machine.

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    3. Pull down on the cables until they are taut.

    4. Tighten the nut.

    5. Install the fuel tank, cross bracket, and cushion.

    Belt Maintenance

    Checking the Belts

    Maintenance Service IntervalMaintenance Procedure
    Every 100 hours
  • Check the mower-deck belt(s).
  • Check belts for cracks, frayed edges, burn marks, wear, signs of overheating, or any other damage.

    The signs of a worn mower belt are squealing while the belt is rotating, blades slipping while you are cutting grass, frayed belt edges, burn marks, and cracks. Replace the mower belt if you detect any of these signs.

    Replacing the Mower-Deck Belt

    1. Disengage the PTO and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Open the engine guard; refer to Opening the Engine Guard.

    4. Remove the belt covers.

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    5. Using a spring-removal tool, remove the idler spring from the deck hook to remove tension on the idler pulley, and roll the belt off the pulleys.

      Warning

      The spring is under tension when installed and can cause personal injury.

      Be careful when removing the belt.

    6. Inspect the mower deck for any damaged pulleys or bearings. Remove any debris from the deck.

    7. Route the new belt around the engine pulley and deck pulleys.

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    8. Use the spring-removal tool to install the idler spring over the deck hook and place tension on the idler pulley and the mower belt.

    9. Install the pulley covers.

    10. Close the engine guard.

    Replacing the Transmission Belt

    Maintenance Service IntervalMaintenance Procedure
    Every 400 hours
  • Check the transmission belt.
  • Every 1,000 hours
  • Replace the transmission belt.
    1. Remove the fuel tank; refer to Removing the Fuel Tank.

    2. Remove the tension spring.

      Caution

      The spring is under tension when installed and can cause personal injury.

      Wear safety glasses and be careful when removing the spring.

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    3. Remove the deck belt from the clutch and clutch stop.

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    4. Install the new belt.

    5. Install the tension spring.

    6. Install the clutch stop.

    Controls System Maintenance

    Adjusting the Motion-Control Levers

    If the motion-control levers do not align horizontally, adjust the motion-control levers.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Push the motion-control levers down out of the NEUTRAL-LOCK position (Figure 69).

    4. Check if the right motion-control lever aligns horizontally with the left motion-control lever (Figure 69).

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      Note: To adjust the right motion-control lever horizontally, adjust the cam.

    5. Release the cushion from the rear of the machine.

    6. Loosen the nut holding the cam (Figure 70).

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    7. Adjust the cam until it aligns with the left motion-control lever and tighten the nut for the cam.

      Note: Moving the cam clockwise (in the vertical position) lowers the handle; moving the cam counterclockwise (in the vertical position) raises the handle.

      Important: Ensure that the flat portion of the cam does not go above a vertical position (right or left); otherwise you may damage the switch.

    8. Repeat steps 3 through 7 for the left motion-control lever.

    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.

    Hydraulic System Specifications

    Hydraulic Fluid Type: Toro® HYPR-OIL 500 hydraulic fluid

    Hydraulic System Fluid Capacity: 4.7 L (159 fl oz)

    Important: Use the fluid specified. Other fluids could damage the system.

    Checking the Hydraulic Fluid

    Maintenance Service IntervalMaintenance Procedure
    After the first 8 hours
  • Check the hydraulic-fluid level.
  • Every 50 hours
  • Check the hydraulic-fluid level.
  • Note: Check the hydraulic-fluid level when the fluid is cold.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Wait for the machine to cool.

    4. Clean the area around the cap and the filler neck of the hydraulic tank (Figure 71).

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    5. Remove the cap from the filler neck (Figure 71).

      Note: Look inside to check the fluid level in the reservoir.

    6. Add fluid to the reservoir until it reaches the reaches the minimum cold fill level.

    7. Install the cap on the filler neck.

    Replacing the Hydraulic Fluid and Filters

    Maintenance Service IntervalMaintenance Procedure
    After the first 50 hours
  • Change the hydraulic filters and hydraulic fluid.
  • Every 500 hours
  • Change the hydraulic filters and hydraulic fluid.
  • Change the hydraulic fluid more frequently in severe conditions or in a hot operating climate. Contact your Authorized Service Dealer for a hydraulic kit to replace the hydraulic filters.

    Warning

    Hot hydraulic fluid can cause severe burns.

    Allow the hydraulic fluid to cool before performing any maintenance on the hydraulic system.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Remove the fuel tank; refer to Removing the Fuel Tank.

    4. Remove the hydraulic-reservoir cap.

    5. Locate the drain plug in the bottom of each transmission and place a drain pan under the plugs (Figure 72).

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    6. Remove the drain plugs.

    7. Allow the hydraulic fluid to fully drain from the machine.

    8. Remove the hydraulic filter cap and filter from each transmission.

    9. Install new hydraulic filters with the spring side facing out and install the filter caps.

    10. Install the drain plugs and torque to 22 to 27 N∙m (16 to 20 ft-lb).

    11. Loosen the vent plug in each transmission so that it is loose and wobbles (Figure 73).

      Note: This allows air to escape the hydraulic system as you add hydraulic fluid.

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    12. Slowly add fluid to the hydraulic tank until it starts to come out 1 of the vent plugs.

      Important: Use the fluid specified in Hydraulic System Specifications or equivalent. Other fluids could cause system damage.

      Important: Monitor the level of fluid in the hydraulic tank so that you do not overfill it.

    13. Tighten the vent plugs.

    14. Install the hydraulic-tank cap.

    15. Install the fuel tank.

    16. Start the engine and let it run for about 2 minutes to purge air from the system.

    17. Shut off the engine and check for leaks.

      Note: If 1 or both wheels do not drive, refer to Bleeding the Hydraulic System.

    Bleeding the Hydraulic System

    The traction system is self-bleeding, however, it may be necessary to bleed the system if fluid is changed or after work is performed on the system.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Raise the rear of the machine onto jack stands high enough to raise the drive wheels off the ground.

    4. Start the engine and move the throttle control to the idle position.

      Note: If the drive wheel does not rotate, assist the purging of the system by carefully rotating the tire in the forward direction.

    5. Check the hydraulic fluid level as it drops, and add fluid as required to maintain the proper level.

    6. Repeat this procedure for the opposite wheel.

    Mower Deck Maintenance

    Blade Safety

    A worn or damaged blade can break, and a piece of the blade could be thrown toward you or bystanders, resulting in serious personal injury or death.

    • Inspect the blades 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.

    • Always inspect the machine to ensure that the blades and blade bolts are not worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.

    • On multi-bladed machines, take care as rotating 1 blade can cause other blades to rotate.

    Servicing the Cutting Blades

    To ensure a superior quality of cut, keep the blades sharp. For convenient sharpening and replacement, keep extra blades on hand.

    Before Inspecting or Servicing the Blades

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and disconnect the spark-plug wires from the spark plugs.

    Inspecting the Blades

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Inspect the blades.
    1. Inspect the cutting edges.

    2. If the edges are not sharp or have nicks, remove and sharpen the blade; refer to Sharpening the Blades.

    3. Inspect the blades, especially in the curved area.

    4. If you notice any cracks, wear, or a slot forming in this area, immediately install a new blade.

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    Checking for Bent Blades

    Warning

    A blade that is bent or damaged could break apart and could critically injure you or bystanders.

    • Always replace a bent or damaged blade with a new blade.

    • Do not file or create sharp notches in the edges or surfaces of the blade.

    1. Rotate the blades until the ends face forward and backward.

    2. Measure from a level surface to the cutting edge, position A, of the blades.

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    3. Rotate the opposite ends of the blades forward.

    4. Measure from a level surface to the cutting edge of the blades at the same position as in step 2 above.

      Note: The difference between the dimensions obtained in steps 2 and 3 must not exceed 3 mm (1/8 inch).

      Note: If this dimension exceeds 3 mm (1/8 inch), replace the blade.

    Removing the Blades

    Replace the blades if they hit a solid object, or if the blade is out of balance or bent.

    1. Place a wrench on the flat of the spindle shaft or hold the blade end using a rag or thickly padded glove.

    2. Remove the blade bolt, bushing, and blade from the spindle shaft (Figure 76).

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    Sharpening the Blades

    1. Use a file to sharpen the cutting edge at both ends of the blade.

      Note: Maintain the original angle.

      Note: The blade retains its balance if the same amount of material is removed from both cutting edges.

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    2. Check the balance of the blade by putting it on a blade balancer.

      Note: If the blade stays in a horizontal position, the blade is balanced and can be used. If the blade is not balanced, file some metal off the end of the sail area only.

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    3. Repeat this procedure until the blade is balanced.

    Installing the Blades

    Warning

    Operating a machine after incorrectly installing the blade assembly and/or not using genuine Toro blade and blade hardware could allow a blade or blade component to be thrown out from under the deck, resulting in serious injury or death.

    Always install genuine Toro blades and blade hardware according to the instructions.

    1. Install the bushing through the blade with the bushing flange on the bottom (grass) side of the blade.

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    2. Install the bushing/blade assembly into the spindle shaft.

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    3. Apply copper-based lubricant or grease to the threads of the blade bolt as needed to prevent seizing. Install the blade bolt finger-tight.

    4. Place a wrench on the flat of the spindle shaft and torque the blade bolt to 75 to 81 N∙m (55 to 60 ft-lb).

    Leveling the Mower Deck

    Preparing the Machine

    Ensure that the mower deck is level any time you install the mower deck or when you see an uneven cut on your lawn.

    Level the mower deck side to side before adjusting the front-to-rear slope.

    1. Park the machine on a level surface, disengage the PTO, and engage the parking brake.

    2. Shut off the engine, remove the key, and disconnect the spark-plug wires from the spark plugs.

    3. Check the tire pressure of both drive tires; refer to Checking the Tire Pressure.

    4. Check the mower deck for bent blades; remove and replace any bent blades; refer to Servicing the Cutting Blades.

    5. Lower the mower deck to the 76 mm (3 inch) height-of-cut position.

    Checking the Mower Deck Side-to-Side Height

    1. Adjust the rear-tire pressure.

    2. Ensure that the blades are not bent; refer to Servicing the Cutting Blades.

    3. Position the blades side to side.

    4. Measure at the B and C locations from a level surface to the cutting edge of blade tips (Figure 81).

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    5. The difference between measurements B and C should be no more than 6 mm (1/4 inch).

      Note: If it is not correct, refer to Leveling the Mower Deck.

    Checking the Mower Deck Front-to-Rear Pitch

    1. Adjust the tire pressure in the rear tires to the correct specifications.

    2. Position 1 blade front-to-rear. Measure at A and B locations from a level surface to the cutting edge of the blade tips (Figure 82).

      Note: The mower blade should be 6 mm (1/4 inch) lower in front at A than in the rear at B.

    3. Rotate the blades and repeat for other blades.

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    4. If the front-to-rear pitch is not correct, refer to Leveling the Mower Deck.

    Leveling the Mower Deck

    1. Loosen the jam nuts on the linkages you want to adjust.

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    2. Rotate the adjuster on the lift arm to adjust the height of the mower deck on that corner.

      Note: Rotate the adjuster clockwise to raise the deck; rotate the bolt counterclockwise to lower it.

    3. Tighten the jam nuts.

    4. Check the side-to-side height; refer to Checking the Mower Deck Side-to-Side Height.

    5. Check the front-to-rear pitch; refer to Checking the Mower Deck Front-to-Rear Pitch

    Matching the Height-of-Cut

    1. Check the rear tire pressure.

    2. Set the height-of-cut to the 76 cm (3 inches) position; refer to Adjusting the Height-of-Cut.

    3. With the machine on level surface, position 1 blade front-to-rear.

    4. Measure at A, and from a level surface to the cutting edge of the blade tips (Figure 84).

      Note: The measurement should be 76 cm (3 inches).

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    5. If the measurement is not correct, adjust the front 2 deck linkages; refer to Leveling the Mower Deck.

    Adjusting the Deck-Lift Spring

    Note: Adjusting the compression spring alters how much the deck floats and the amount of effort needed to lift the deck when using the height-of-cut lever.

    • More spring extension reduces the lever lift force required and causes the deck to float more.

    • Less spring extension increases the lever lift force required and causes the deck to float less.

    1. Raise the height-of-cut lever and lock it into the transport position.

    2. Check the distance between the spring nut and the rear side of the welded mount bracket (Figure 85).

    3. Ensure that the length is between 64 to 89 mm (2.5 to 3.5 inches) as shown in Figure 85.

    4. If needed, adjust the distance by adjusting the bolt on the front of the mount bracket (Figure 85).

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    5. Repeat this procedure for the opposite deck-lift spring.

    Replacing the Grass Deflector

    Danger

    An uncovered discharge opening allows objects to be thrown toward you or bystanders. Also, contact with the blade could occur. Thrown objects or blade contact will cause serious injury or death.

    Do not operate the mower with the discharge deflector raised, removed, or altered unless a grass collection system or mulch kit is in place and working properly.

    1. Remove the locknut, bolt, spring, and spacer holding the deflector to the pivot brackets.

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    2. Remove the damaged or worn grass deflector.

    3. Place the spacer and the spring onto the grass deflector.

    4. Place 1 J-hook end of the spring behind the deck edge.

      Note: Make sure that 1 J-hook end of spring is installed behind deck edge before installing the bolt as shown in Figure 86.

    5. Install the bolt and the nut.

    6. Place 1 J-hook end of the spring around the grass deflector.

      Important: The grass deflector must be able to rotate. Lift the deflector up to the full open position, and ensure that it rotates into the full-down position.

    Cleaning

    Cleaning under the Mower Deck

    Maintenance Service IntervalMaintenance Procedure
    Before each use or daily
  • Clean under the mower deck.
  • Remove the grass buildup under the mower daily.

    1. Park the machine on a level surface, disengage the PTO, move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake.

    2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

    3. Raise the front of the machine and use jack stands to support the mower.

    Disposing of Waste

    Engine oil, batteries, hydraulic fluid, and engine coolant are pollutants to the environment. Dispose of these according to your state and local regulations.

    Storage

    Storage Safety

    • Before leaving the operator's position for any reason, do the following:

      • Park the machine on a level surface.

      • Disengage the drives and the power take-off.

      • Engage the parking brake.

      • Shut off the machine and remove the key.

      • Wait for all moving parts to stop.

      • Allow the machine to cool before servicing, adjusting, fueling, cleaning, or storing it.

    • Let the engine cool before storing the machine.

    • Do not store the machine or fuel near flames or drain the fuel indoors.

    Cleaning and Storage

    Maintenance Service IntervalMaintenance Procedure
    Before storage
  • Paint chipped surfaces.
  • Perform all maintenance procedures listed above before storage.
    1. Disengage the power takeoff (PTO), engage the parking brake, shut off the engine, and remove the key.

    2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine.

      Important: You can wash the machine with a mild detergent and water. Do not pressure-wash the machine. Avoid excessive use of water, especially near the drive system and engine. Pressure-washing can force dirt and water into critical parts, such as spindle bearings and electrical switches.

    3. Clean any dirt and chaff from the outside of the engine cylinder-head fins and blower housing.

    4. Check the brake; refer to Testing the Parking Brake.

    5. Service the air cleaner; refer to Servicing the Air Cleaner.

    6. Grease the machine; refer to Greasing the Machine.

    7. Change the engine oil; refer to Changing the Engine Oil.

    8. Check the tire pressure; refer to Checking the Tire Pressure.

    9. For long-term storage, do the following:

      1. Add fuel stabilizer/conditioner to the fuel in the tank as directed by the fuel stabilizer manufacturer.

      2. Run the engine to distribute the conditioned fuel through the fuel system for 5 minutes.

      3. Shut off the engine, allow it to cool, and drain the fuel tank; refer to Draining the Fuel Tank, or operate the engine until it shuts off.

      4. Start the engine and allow it to run until it shuts off. Repeat with the choke engaged (if applicable) until the engine does not start.

      5. Dispose of fuel properly; recycle it according to local regulations.

        Important: Do not store fuel containing stabilizer/conditioner longer than the duration recommended by the fuel-stabilizer manufacturer.

    10. Remove the spark plug(s) and check its condition; refer to Servicing the Spark Plug(s).

    11. With the spark plug(s) removed from the engine, pour 15 ml (2 tablespoons) of engine oil into the spark-plug hole, and use the starter to crank the engine and distribute the oil inside the cylinder.

    12. Install the spark plug(s) but do not connect the wire to the spark plug(s).

    13. Check and tighten all fasteners. Repair or replace any part that is damaged or missing.

    14. Paint all scratched or bare metal surfaces with paint from an Authorized Service Dealer.

    15. Store the machine in a clean, dry, garage or storage area. Remove the key from the switch and store it in a memorable place. Cover the machine to protect it and keep it clean.

    Troubleshooting

    ProblemPossible CauseCorrective Action
    The engine does not start, starts hard, or fails to keep running.
    1. The fuel tank is empty or the shutoff valve is closed.
    2. A spark-plug wire is loose or disconnected.
    3. A spark plug is pitted, fouled, or the gap is incorrect.
    4. The air cleaner is dirty.
    5. Dirt is in the fuel filter.
    6. Dirt, water, or stale fuel is in the fuel system.
    7. The gap between the safety-interlock switches is not correct.
    1. Fill the fuel tank with fuel and open the valve
    2. Install the wire on spark plug.
    3. Install a new, correctly gapped spark plug.
    4. Service the air-cleaner element.
    5. Replace the fuel filter.
    6. Contact an Authorized Service Dealer.
    7. Contact an Authorized Service Dealer.
    The engine loses power.
    1. The engine load is excessive.
    2. The air cleaner is dirty.
    3. The oil level in the crankcase is low.
    4. The cooling fins and air passages under the engine blower housing are plugged.
    5. A spark plug is pitted, fouled, or the gap is incorrect.
    6. The vent hole in the fuel cap is plugged.
    7. Dirt is in the fuel filter.
    8. Dirt, water, or stale fuel is in the fuel system.
    1. Reduce the ground speed.
    2. Service the air-cleaner element.
    3. Add oil to the crankcase.
    4. Remove the obstruction from the cooling fins and air passages.
    5. Install a new, correctly gapped spark plug.
    6. Clean or replace the fuel cap.
    7. Replace the fuel filter.
    8. Contact an Authorized Service Dealer.
    The engine overheats.
    1. The engine load is excessive.
    2. The oil level in the crankcase is low.
    3. The cooling fins and air passages under the engine blower housing are plugged.
    1. Reduce the ground speed.
    2. Add oil to the crankcase.
    3. Remove the obstruction from the cooling fins and air passages.
    The machine does not drive.
    1. The hydraulic-fluid reservoir is low.
    2. Air is in the hydraulic system.
    3. A pump-drive belt slips.
    4. A pump-drive belt idler spring is missing.
    5. The pump-bypass valves are open.
    1. Add hydraulic fluid to the reservoir.
    2. Bleed the air out the hydraulic system.
    3. Replace the pump-drive belt.
    4. Replace the pump-drive belt idler spring.
    5. Tighten the bypass valves. Torque to 12 to 15 N∙m (9 to 11 ft-lb).
    There is abnormal vibration.
    1. Cutting blade(s) is/are bent or unbalanced.
    2. A blade-mounting bolt is loose.
    3. The engine-mounting bolts are loose.
    4. An engine pulley, idler pulley, or blade pulley is loose.
    5. An engine pulley is damaged.
    6. A blade spindle is bent.
    1. Install new cutting blade(s).
    2. Tighten the blade-mounting bolt.
    3. Tighten the engine-mounting bolts.
    4. Tighten the appropriate pulley.
    5. Contact an Authorized Service Dealer.
    6. Contact an Authorized Service Dealer.
    The cutting height is uneven.
    1. Blade(s) are not sharp.
    2. Cutting blade(s) is/are bent.
    3. The mower deck is not level.
    4. The mower deck pitch is wrong.
    5. The underside of mower deck is dirty.
    6. The tire pressure is not correct.
    7. A blade spindle is bent.
    1. Sharpen the blade(s).
    2. Install new cutting blade(s).
    3. Level the mower deck side-to-side position.
    4. Adjust the front-to-rear pitch.
    5. Clean the underside of the mower deck.
    6. Adjust the tire pressure.
    7. Contact an Authorized Service Dealer.
    The blades do not rotate.
    1. A pump-drive belt is worn, loose or broken.
    2. A pump-drive belt is off pulley.
    3. A mower-deck belt is worn, loose or broken.
    4. A mower-deck belt is off the pulley.
    5. An idler spring is broken or missing.
    6. The electric clutch is out of adjustment.
    7. The clutch connector or wire is damaged.
    8. The electric clutch is damaged.
    9. The safety-interlock system prevents blade rotation.
    10. The PTO switch is faulty.
    1. Check the belt tension.
    2. Install the drive belt and check the adjusting shafts and belt guides for the correct position.
    3. Install the new deck belt.
    4. Install the deck pulley and check the idler pulley, idler arm and spring for the correct position and function.
    5. Replace the spring.
    6. Adjust the clutch air gap.
    7. Contact an Authorized Service Dealer.
    8. Contact an Authorized Service Dealer.
    9. Contact an Authorized Service Dealer.
    10. Contact an Authorized Service Dealer.
    The clutch does not engage.
    1. The fuse is blown.
    2. There is low voltage supply at the clutch.
    3. The coil is damaged.
    4. There is inadequate current supply.
    5. The rotor/armature air gap is too large.
    1. Replace the fuse. Check the coil resistance, battery charge, charging system, and wiring connections, and replace components if necessary.
    2. Check the coil resistance, battery charge, charging system, and wiring connections and replace parts if necessary.
    3. Replace the clutch.
    4. Repair or replace the clutch lead wire or electrical system. Clean the connector contacts.
    5. Remove the shim or replace the clutch.

    Schematics

    145-5227

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