Greensmaster® 3420 TriFlex™ Traction Unit

• Read the Operator’s Manual and other training material carefully. Be familiar with the controls, safety signs, and the proper use of the equipment.

• If the operator or mechanic can not read the language of this manual, it is the owner’s responsibility to explain this material to them.

• Never allow children or people unfamiliar with these instructions to use or service the mower. Local regulations may restrict the age of the operator.

• Never mow while people, especially children, or pets are nearby.

• Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or their property.

• Do not carry passengers.

• All drivers and mechanics should seek and obtain professional and practical instruction. The owner is responsible for training the users. Such instruction should emphasize:

  • the need for care and concentration when working with ride-on machines;

  • control of a ride-on machine sliding on a slope will not be regained by the application of the brake. The main reasons for loss of control are:

    • insufficient wheel grip;

    • being driven too fast;

    • inadequate braking;

    • the type of machine is unsuitable for the task;

    • lack of awareness of the effect of ground conditions, especially slopes.

    • The owner/user can prevent and is responsible for accidents or injuries occurring to himself or herself, other people, or property

• While mowing, always wear substantial footwear, long trousers, hard hat, safety glasses, and hearing protection. Long hair, loose clothing, or jewelry may get tangled in moving parts. Do not operate the equipment when barefoot or wearing open sandals.

• Thoroughly inspect the area where the equipment is to be used and remove all objects which may be thrown by the machine.

• Replace faulty silencers/mufflers.

• Evaluate the terrain to determine what accessories and attachments are needed to properly and safely perform the job. Only use accessories and attachments approved by the manufacturer.

• Check that operator’s presence controls, safety switches and shields are attached and functioning properly. Do not operate unless they are functioning properly.

• Do not operate the engine in a confined space where dangerous carbon monoxide fumes can collect.

• Mow only in daylight or in good artificial light.

• Before attempting to start the engine, disengage all blade attachment clutches, shift into neutral, and engage the parking brake.

• Remember there is no such thing as a safe slope. Travel on grass slopes requires particular care. To guard against overturning:

  • do not stop or start suddenly when going up or downhill;

  • machine speeds should be kept low on slopes and during tight turns;

  • stay alert for humps and hollows and other hidden hazards;

  • never mow across the face of the slope, unless the mower is designed for this purpose.

• Stay alert for holes in the terrain and other hidden hazards.

• Watch out for traffic when crossing or near roadways.

• Stop the blades from rotating before crossing surfaces other than grass.

• When using any attachments, never direct discharge of material toward bystanders nor allow anyone near the machine while in operation.

• Never operate the machine with damaged guards, shields, or without safety protective devices in place. Be sure all interlocks are attached, adjusted properly, and functioning properly.

• Do not change the engine governor settings or overspeed the engine. Operating the engine at excessive speed may increase the hazard of personal injury.

• Before leaving the operator’s position:

  • stop on level ground;

  • disengage the power take-off and lower the attachments;

  • change into neutral and set the parking brake;

  • stop the engine and remove the key.

• Disengage drive to attachments when transporting or not in use.

• Stop the engine and disengage drive to attachment:

  • before refuelling;

  • before removing the grass catcher/catchers;

  • before making height adjustment unless adjustment can be made from the operator’s position.

  • before clearing blockages;

  • before checking, cleaning or working on the mower;

  • after striking a foreign object or if an abnormal vibration occurs. Inspect the mower for damage and make repairs before restarting and operating the equipment.

• Reduce the throttle setting before stopping the engine and, if the engine is provided with a fuel shut-off valve, turn the fuel off at the conclusion of mowing.

• Keep hands and feet away from the cutting units.

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

• Slow down and use caution when making turns and crossing roads and sidewalks. Stop the reels when not mowing.

• Do not operate the mower under the influence of alcohol or drugs.

• Lightning can cause severe injury or death. If lightning is seen or thunder is heard in the area, do not operate the machine; seek shelter.

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

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

• The ROPS is an integral and effective safety device. Keep a folding ROPS in the raised and locked position and use the seat belt when operating the machine.

• Lower a folding ROPS temporarily only when absolutely necessary. Do not wear the seat belt when folded down.

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

• Be certain that the seat belt can be released quickly in the event of an emergency.

• Check the area to be mowed and never fold down a folding ROPS in areas where there are slopes, drop offs or water.

• Check carefully for overhead clearances (i.e. branches, doorways, electrical wires) before driving under any objects and do not contact them.

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

• Replace a damaged ROPS. Do not repair or revise.

• Do not remove the ROPS.

• Any alterations to a ROPS must be approved by the manufacturer.

• To avoid personal injury or property damage, use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive.

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

• Use only an approved fuel container.

• Never remove fuel cap or add fuel with the engine running.

• Allow engine to cool before refueling.

• Never refuel the machine indoors.

• 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.

• Never 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 equipment from the truck or trailer and refuel it on the ground. If this is not possible, then refuel such equipment with a portable container, rather than from a fuel dispenser nozzle.

• Keep the 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 fuel is spilled on clothing, change clothing immediately.

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

• Keep all nuts, bolts and screws tight to be sure the equipment is in safe working condition.

• Never store the equipment with fuel in the tank inside a building where fumes may reach an open flame or spark.

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

• To reduce the risk of fire hazard, keep the engine, silencer/muffler, battery compartment, and fuel storage area free of grass, leaves, or excessive grease.

• Replace worn or damaged parts for safety.

• Check the grass catcher frequently for wear or deterioration.

• Keep all parts in good working condition and all hardware and hydraulic fittings tightened. Replace all worn or damaged parts and decals.

• If the fuel tank has to be drained, do this outdoors.

• Be careful during adjustment of the machine to prevent entrapment of the fingers between moving blades and fixed parts of the machine.

• On multi-reel machines, take care as rotating one reel can cause other reels to rotate.

• Disengage drives, lower the cutting units, set parking brake, stop engine and remove key. Wait for all movement to stop before adjusting, cleaning or repairing.

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

• Use jack stands to support components when required.

• Carefully release pressure from components with stored energy.

• Disconnect battery before making any repairs. Disconnect the negative terminal first and the positive last. Reconnect positive first and negative last.

• Use care when checking the reels. Wrap the reels or wear gloves, and use caution when servicing them.

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

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

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

• Use full width ramps for loading machine into 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.

• Know how to stop the engine quickly.

• Always wear substantial shoes. Do not operate the machine while wearing sandals, tennis shoes, or sneakers. Wearing safety shoes and long pants is advisable and required by some local ordinances and insurance regulations.

• The operator must be skilled and trained in how to drive on hillsides. Failure to use caution on slopes or hills may cause loss of control and cause the vehicle to tip or roll, possibly resulting in personal injury or death.

• Handle fuel carefully. Wipe up any spills.

• Check the safety interlock switches daily for proper operation. If a switch has failed, replace the switch before operating the machine

• Before attempting to start the engine, sit on the seat, pull the lift lever back and release it to ensure the cutting units are disengaged. Verify that the traction system is in neutral and the parking brake is set.

• Using the machine demands attention. To prevent loss of control:

  • Do not drive close to sand traps, ditches, creeks, or other hazards.

  • Reduce speed when making sharp turns. Avoid sudden stops and starts.

  • Watch out for traffic when near or crossing roads. Always yield the right-of-way.

  • Apply the service brakes when going downhill to keep forward speed slow and to maintain control of the machine.

• Shut the engine off before emptying the baskets.

• Raise the cutting units when driving from one work area to another.

• Do not touch the engine, muffler, or exhaust pipe while the engine is running or soon after it has stopped because these areas could be hot enough to cause burns.

• Before getting off of the seat, move the functional control lever to neutral (N), raise the cutting units and wait for the reels to stop spinning. Set the parking brake. Stop the engine and remove the key from the ignition switch.

• Traverse slopes carefully. Do not start or stop suddenly when traveling uphill or downhill.

• The operator must be skilled and trained in how to drive on hillsides. Failure to use caution on slopes or hills may cause loss of control and cause the machine to tip or roll, possibly resulting in personal injury or death.

• If the engine stalls or loses headway and cannot make it to the top of a slope, do not turn the machine around. Always back slowly, straight down the slope.

• When a person or pet appears unexpectedly in or near the mowing area, stop mowing. Careless operation, combined with terrain angles, ricochets, or improperly positioned guards can lead to thrown object injuries. Do not resume mowing until the area is cleared.

• Always use the seat belt with the ROPS when operating the machine.

• Whenever the machine is left unattended, make sure the cutting units are fully raised, the reels are not spinning, the key is removed from the ignition switch, and the parking brake is set.

• Make sure all hydraulic line connectors are tight and all hydraulic hoses and lines are in good condition before applying pressure to the system.

• Keep your body and hands away from pin hole leaks or nozzles that eject hydraulic fluid under high pressure. Use paper or cardboard, not your hands, to search for leaks. Hydraulic fluid escaping under pressure can have sufficient force to penetrate the skin and cause serious injury.

• Before disconnecting or performing any work on the hydraulic system, all pressure in the system must be relieved by stopping the engine and lowering the cutting units and attachments to the ground.

• Check all fuel lines for tightness and wear on a regular basis. Tighten or repair them as needed.

• If the engine must be running to perform a maintenance adjustment, keep hands, feet, clothing, and any parts of the body away from the cutting units, attachments, and any moving parts, especially the screen at the side of the engine. Keep everyone away.

• To ensure safety and accuracy, have an Authorized Toro Distributor check the maximum engine speed with a tachometer. Maximum governed engine speed should be 2900 rpm.

• The engine must be shut off before checking the oil or adding oil to the crankcase.

• If major repairs are ever needed or if assistance is desired, contact an Authorized Toro Distributor.

• 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.

• Disconnect the cutting units from the power supply, using the cutting unit power disconnect couplers, before performing any work on the cutting units.

The machines reservoir is filled at the factory with approximately 20.8 L (5.5 gallons) of high quality hydraulic fluid. Check the level of the hydraulic fluid before the engine is first started and daily thereafter. The recommended replacement fluid is as follows:

Alternate fluids: If the Toro fluid is not available, other fluids may be used provided they meet all the following material properties and industry specifications. We do not recommend the use of synthetic fluid. Consult with your lubricant distributor to identify a satisfactory product

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

Important: The ISO VG 46 Multigrade fluid has been found to offer optimal performance in a wide range of temperature conditions. For operation in consistently high ambient temperatures, 18° C (65° F) to 49° C (120° F), ISO VG 68 hydraulic fluid may offer improved performance.

Premium Biodegradable Hydraulic Fluid-Mobil EAL EnviroSyn 46H

Important: Mobil EAL EnviroSyn 46H is the only synthetic biodegradable fluid approved by Toro. This fluid is compatible with the elastomers used in Toro hydraulic systems and is suitable for a wide-range of temperature conditions. This fluid is compatible with conventional mineral oils, but for maximum biodegradability and performance the hydraulic system should be thoroughly flushed of conventional fluid. The oil is available in 19 l (5 gallon) containers or 55 gallon drums from your Mobil Distributor.

Important: Many hydraulic fluids are almost colorless, making it difficult to spot leaks. A red dye additive for the hydraulic system oil is available in 20 ml (2/3 oz) bottles. One bottle is sufficient for 15-22 L (4-6 gallons) of hydraulic oil. Order part no. 44-2500 from your authorized Toro distributor. This red dye is not recommended for use with biodegradable fluids.

Important: Regardless of hydraulic fluid type used, any machine used for mowing fairways, verticutting or used during ambient temperatures above 29° C (85° F) should have Oil Cooler Kit, Part No. 117-9314, installed.

1. Position the machine on a level surface. Make sure the machine has cooled down so the oil is cold.

2. Remove the cap from the reservoir (Figure 32).

   

   Figure 32

   1. Hydraulic tank cap

3. Slowly fill the reservoir with the appropriate hydraulic fluid until the level is at or within 6 mm (1/4 inch) of the arrow in the symbol next to the white window in the front of the reservoir (Figure 33). Do not overfill.

   

   Figure 33

   1. White window on the front of the hydraulic reservoir
   2. Fill to within this area.

   Important: To prevent system contamination, clean the top of the hydraulic fluid containers before puncturing. Ensure the pour spout and funnel are clean.

4. Install the reservoir cap. Wipe up any fluid that may have spilled.

   Important: Check level of hydraulic fluid before engine is first started and daily thereafter.

Important: Do not use ether or other types of starting fluid.

1. Be sure the parking brake is set, the raise/lower mow control is disengaged, and the functional control is in the neutral position.

2. Remove your foot from the traction pedal and make sure the pedal is in the neutral position.

3. Move the throttle lever to the Slow position.

4. Insert the key into the switch and rotate it to On. Hold it in the On position until the glow plug indicator light goes off (approximately 6 seconds).

5. Immediately turn the ignition key to the Start position. Release the key when the engine starts and allow it to move to the On position. Move the throttle control to Slow.

   Important: To prevent overheating of the starter motor, do not engage the starter longer than 10 seconds. After 10 seconds of continuous cranking, wait 60 seconds before engaging the starter motor again.

6. Allow the engine to warm up for a few minutes before operating.

   Important: When the engine is started for the first time, or after an overhaul of the engine, operate the machine in forward and reverse for one to two minutes. Turn the steering wheel to the left and right to check the steering response. Then shut the engine off (see Stopping in Starting and Stopping the Engine) and wait for all moving parts to stop. Check for oil leaks, loose parts and any other noticeable malfunctions.

1. Move the throttle control to Slow, disengage the raise/lower mow control, and move the functional control to neutral.

2. Rotate the starter key to Off to shut the engine off. Remove the key from the switch to prevent accidental starting.

3. Close the fuel shut-off valves before storing the machine.

1. Disconnect the cutting unit power disconnect couplers; refer to Cutting Unit Power Disconnect Connectors.

   Caution

   If you do not disconnect the power to the cutting units, someone could accidentally start the cutting unit, causing serious injury to hands and feet.

   Always separate the cutting unit power disconnect couplers before working on the cutting units.

2. Lift up on the foot rest and swing it open, allowing access to the center cutting unit position (Figure 35).

   Caution

   The foot rest can pinch fingers if it falls into the closed position.

   Keep your fingers clear of the area where the foot rest seats while it is open.

   

   Figure 35

   1. Footrest—closed
   2. Footrest—open

3. Position the cutting unit under the center suspension arm.

4. With the latches on the suspension-arm bar pointing up (i.e., open) (Figure 36), push the suspension arm down so that the bar fits over the bar across the top of the cutting unit (Figure 37).

   

   Figure 36

   1. Latch—closed position
   2. Suspension-arm bar
   3. Latch—open position
   

   Figure 37

   1. Suspension-arm bar
   2. Cutting-unit bar

5. Close the latches down and around the cutting-unit bar and lock them in place (Figure 36).

   Note: A “click” can be heard and felt when the latches are properly locked in place.

6. Coat the spline shaft of the cutting unit motor with clean grease (Figure 38).

7. Insert the motor into the left side of the cutting unit (as viewed from the operator's position) and pull the motor retaining bar on the cutting unit toward the motor until you hear an audible “click” from both sides of the motor (Figure 38).

   

   Figure 38

   1. Reel motor
   2. Spline shaft
   3. Cavity
   4. Motor retaining bar

8. Mount a grass basket onto the basket hooks on the suspension arm.

9. Repeat this procedure for the other cutting units.

10. Connect the cutting unit power disconnect couplers; refer to Cutting Unit Power Disconnect Connectors.

1. Disconnect the cutting unit power disconnect couplers; refer to Cutting Unit Power Disconnect Connectors.

   Caution

   If you do not disconnect the power to the cutting units, someone could accidentally start the cutting unit, causing serious injury to hands and feet.

   Always separate the cutting unit power disconnect couplers before working on the cutting units.

2. Park the machine on a clean level surface, lower the cutting units to the ground until the suspension hydraulics are fully extended, stop the engine, and set the parking brake.

3. Push the motor retaining bar out of the slots on the motor towards the cutting unit and remove the motor from the cutting unit.

   

   Figure 39

   1. Reel motor
   2. Motor retaining bar

4. Move the motor to the storage location on the front of the suspension arm (Figure 40).

   

   Figure 40

   Note: When sharpening, setting the height-of-cut, or performing other maintenance procedures on the cutting units, store the cutting unit reel motors in the storage location on the front of the suspension arms to prevent damage to them.

   Important: Do not raise the suspension to the transport position when the reel motors are in the holders in the machine frame. Damage to the motors or hoses could result. If you must move the traction unit without the cutting units installed, secure them to the suspension arms using cable ties.

5. Open the latches on the suspension-arm bar of the cutting unit you are removing (Figure 36).

6. Disconnect the latches from the cutting-unit bar.

7. Roll the cutting unit out from under the suspension arm.

8. Repeat steps 3 through 7 for the other cutting units as required.

9. Connect the cutting unit power disconnect couplers; refer to Cutting Unit Power Disconnect Connectors.

Lubricate the grease fitting regularly with No. 2 general-purpose, lithium-base grease.

1. Wipe the grease fitting clean so foreign matter cannot be forced into the bearing or bushing (Figure 43).

   

   Figure 43

   The grease fitting is located behind the seat on the inner, right side of the machine.

2. Pump grease into the bearing or bushing until the grease is visible. Wipe up excess grease.

• Check the air cleaner body for damage which could cause an air leak. Replace if damaged. Check the whole intake system for leaks, damage or loose hose clamps.

• Service the air cleaner filter before 200 hours if the engine performance suffers due to extremely dusty, dirty conditions. Changing the air filter before it is necessary only increases the chance of dirt entering the engine when the filter is removed.

• Be sure the cover is seated correctly and seals with the air cleaner body.

1. Release the latches securing the air cleaner cover to the air cleaner body (Figure 44).

   

   Figure 44

   1. Air cleaner body
   2. Air filter
   3. Air cleaner cover

2. Remove the cover from the air cleaner body. Before removing the filter, use low pressure air (40 psi, clean and dry) to help remove large accumulations of debris packed between outside of primary filter and the canister. Avoid using high pressure air which could force dirt through the filter into the intake tract. This cleaning process prevents debris from migrating into the intake when the primary filter is removed.

3. Remove and replace the primary filter. Cleaning of the used element is not recommended due to the possibility of damage to the filter media. Inspect the new filter for shipping damage, checking the sealing end of the filter and the body. Do not use a damaged element. Insert the new filter by applying pressure to the outer rim of the element to seat it in the canister. Do not apply pressure to the flexible center of the filter.

4. Clean the dirt ejection port located in the removable cover. Remove the rubber outlet valve from the cover, clean the cavity and replace the outlet valve.

5. Install the cover orienting the rubber outlet valve in a downward position—between approximately 5:00 to 7:00 when viewed from the end.

6. Secure the latches (Figure 44).

1. Remove the drain plug and let oil flow into a drain pan. When the oil stops, install the drain plug (Figure 45).

   

   Figure 45

   1. Drain plug

2. Remove the oil filter (Figure 46). Apply a light coat of clean oil to the new filter gasket.

   

   Figure 46

   1. Oil filter

3. Screw the filter on by hand until the gasket contacts the filter adapter, then tighten 1/2 to 3/4 turn further. Do not overtighten.

4. Add oil to the crankcase; refer to Checking the Engine Oil.

5. Dispose of the used oil properly.

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

Voltage: 12 V, 530 Cold Cranking Amps

The battery electrolyte level must be properly maintained and the top of the battery kept clean. lf the machine is stored in a location where temperatures are extremely high, the battery will run down more rapidly than if the machine is stored in a location where temperatures are cool.

Maintain the cell level with distilled or demineralized water. Do not fill the cells above the bottom of the split ring inside each cell.

Keep the top of the battery clean by washing it periodically with a brush dipped in ammonia or bicarbonate of soda solution. Flush the top surface with water after cleaning it. Do not remove the fill caps while cleaning the battery.

The battery cables must be tight on the terminals to provide good electrical contact.

If the machine will be stored more than 30 days, remove the battery and charge it fully. Either store it on the shelf or on the machine. Leave the cables disconnected if it is stored on the machine. Store the battery in a cool atmosphere to avoid quick deterioration of the charge in the battery. To prevent the battery from freezing, make sure it is fully charged. The specific gravity of a fully charged battery is 1.265–1.299.

The fuses in the machine’s electrical system are located under the seat (Figure 49).

Figure 49

1. Fuses
2. 50 A fuse for radiator fan (behind parts illustrated)

If the machine needs to be jump started, the alternate positive post (located on the starter solenoid) can be used instead of the positive battery post (Figure 50).

Figure 50

1. Alternate positive battery post

If the machine creeps when the traction control pedal is in the neutral position, the neutral return mechanism must be adjusted.

1. Block up under the frame so that one of the front wheels is off of the floor.

   Note: Note: If machine is equipped with a 3 wheel drive kit, also raise and block rear wheel.

2. Start the engine, move the throttle to Slow, and check the front wheel that is off of the floor; it must not be rotating.

3. If the wheel is rotating, stop the engine and proceed as follows:

   1. Loosen the nut securing the eccentric to the top of the hydrostat (Figure 51).

      

      Figure 51

      1. Eccentric
      2. Locknut

   2. Move the functional control lever to Neutral and the throttle to Slow. Start the engine.

   3. Rotate the eccentric until creep does not occur in either direction. When the wheel stops rotating, tighten the nut locking the eccentric and the adjustment (Figure 51). Verify the adjustment with the throttle in the Slow and Fast position.

      Note: If the wheel still turns when the eccentric is at the maximum adjustment, contact your Authorized Service Distributor or refer to the Service Manual for further adjustment.

The traction pedal is adjusted for maximum transport speed at the factory, but an adjustment may be required if the pedal reaches full stroke before it contacts the pedal stop, or if a decrease in transport speed is desired.

Press down on the traction pedal. If the pedal contacts the stop (Figure 52) before tension is felt on the cable, an adjustment is required:

Figure 52

1. Pedal stop

1. Loosen flangehead locknuts securing the pedal stop to the floor plate (Figure 52).

2. Adjust the pedal stop so it contacts the pedal rod and tighten the nuts.

The machine is adjusted at the factory, but speed may be varied if desired.

1. Loosen the jam nut on the trunnion bolt (Figure 53).

2. Loosen the nut securing the lock and mow brackets on the pedal pivot.

   

   Figure 53

   1. Jam nut
   2. Nut
   3. Trunnion bolt

3. Rotate the trunnion bolt clockwise to reduce the mowing speed and counterclockwise to increase the mowing speed.

4. Tighten the jam nut on the trunnion bolt and the nut on the pedal pivot to lock the adjustment (Figure 53). Check the adjustment and adjust as required.

To prevent the system from overheating, the radiator screen and radiator must be kept clean. Check and clean the screen and radiator daily or, if necessary, hourly. Clean these components more frequently in dusty, dirty conditions.

1. Remove the radiator screen (Figure 54).

   

   Figure 54

   1. Wing bolts
   2. Radiator screen
   3. Overflow tank
   4. Radiator cap

2. Working from the fan side of the radiator, blow out the radiator with compressed air.

3. Clean the screen and install it.

If the brake fails to hold the machine while parked, you can adjust the brakes using the bulkhead fitting near the brake drum; contact your Authorized Service Distributor or refer to the Service Manual for more information.

Make sure the belt is properly tensioned to ensure proper operation of the machine and prevent unnecessary wear.

1. Stop the engine, set the parking brake, and remove the ignition key.

2. Apply moderate thumb pressure to the belt between the pulleys (10 kg or 22 lb). The belt should deflect 7 to 9 mm (0.28 to 0.35 inches). If not, complete the following procedure to adjust the belt tension:

   

   Figure 55

   1. Alternator belt—apply pessure here
   2. Alternator
   3. Adjusting strap

   1. Loosen the bolts securing the alternator to the engine and adjusting strap.

   2. Inspect the belt for wear or damage and replace if it is worn.

   3. Using a lever placed between the alternator and the engine block, pull the alternator out to obtain the correct belt tension and tighten the bolts.

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

1. Clean the area around the filter mounting area (Figure 56). Place a drain pan under the filter and remove the filter.

   Note: If the oil is not going to be drained, disconnect and plug the hydraulic line going to the filter.

   

   Figure 56

   1. Hydraulic oil filter

2. Fill the replacement filter with the appropriate hydraulic fluid, lubricate the sealing gasket, and hand turn it until the gasket contacts the filter head. Then tighten 3/4 turn further. The filter should now be sealed.

3. Fill the hydraulic reservoir with hydraulic oil; refer to Checking the Hydraulic Fluid Level.

4. Start the machine and run it at idle for 3 to 5 minutes to circulate the fluid and remove any air trapped in the system.

5. Stop the machine, recheck the fluid level and replenish as required.

6. Dispose of the oil and filter properly.

Check the hydraulic lines and hoses daily for leaks, kinked lines, loose mounting supports, wear, loose fittings, weather deterioration, and chemical deterioration. Make all necessary repairs before operating.

1. Position the machine on a level surface, lower the cutting units, stop the engine, engage the parking brake.

2. Remove the plastic cover to the left side of the seat.

3. Make initial reel to bedknife adjustments appropriate for backlapping on all cutting units which are to be backlapped; refer to the Cutting Unit Operator’s Manual.

4. Start the engine and run at low idle speed. If the engine stalls, increase the engine speed.

5. Switch the Backlap Switch to the reverse (R) position (Figure 57).

   

   Figure 57

   1. Backlap switch—reverse position
   2. Backlap switch—mow position

6. On the InfoCenter pull up the Main Menu and scroll down to Settings.

7. In the Settings menu scroll down to Backlap rpm and use the ± button to select the desired backlap speed.

8. With the functional control lever in the neutral position, move the Raise/Lower Mow control forward to start the backlapping operation on the designated reels.

9. Apply lapping compound with a long handle brush. Never use a short handled brush.

10. If the reels stall or become erratic while backlapping, select a higher reel speed setting until the speed stabilizes.

11. To make an adjustment to the cutting units while backlapping, turn the reels off by moving the Raise/Lower Mow control rearward and stop the engine. After completing adjustments, repeat steps 4 through 9.

12. Repeat the procedure for all cutting units you want to backlap.

13. When finished, return the backlap switch to the forward (F) position, replace the cover, and wash all lapping compound off of the cutting units. Adjust cutting unit reel to bedknife as needed. Move the cutting unit reel speed control to the desired mowing position.

    Important: If the backlap switch is not returned to the forward (F) position after backlapping, the cutting units will not raise or function properly.