ProLine H600 Rotary Mower

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

Front and rear tires air pressure specification: 150 kPa (21 psi).

Check the air pressure in the front and rear tires. Add or remove air as needed to set the air pressure in the tires to the tire air pressure specification.

Important: Maintain pressure in all tires to ensure a good quality of cut and proper machine performance.Check the air pressure in all the tires before operating the machine.

Figure 16

The purpose of the safety-interlock system is to prevent the engine from cranking or starting unless the traction pedal is in neutral, the PTO switch is in the OFF position, the parking brake is engaged, or the operator is in the seat.

In addition, the engine should shut off when:

• The operator leaves the seat with the PTO switch in the ON position;

• The operator leaves the seat with the traction pedal out of neutral;

• The traction pedal is pressed with the parking brake engaged.

Use only clean, fresh diesel fuel or biodiesel fuels with low (<500 ppm) or ultra low (<15 ppm) sulfur content. The minimum cetane rating should be 40. Purchase fuel in quantities that can be used within 180 days to ensure fuel freshness.

Fuel tank capacity:22 L (5.8 US gallons)

Use summer-grade diesel fuel (No. 2-D) at temperatures above -7°C (20°F) and winter-grade (No. 1-D or No. 1-D/2-D blend) below that temperature. Using winter-grade fuel at lower temperatures provides lower flash point and cold flow characteristics which will ease starting and reduce fuel filter plugging.

Using summer-grade fuel above -7°C (20°F) will contribute toward longer fuel pump life and increased power compared to winter-grade fuel.

Important: Do not use kerosene or gasoline instead of diesel fuel. Failure to observe this caution will damage the engine.

Filling the Fuel Tank

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

Figure 17

Adjust the steering column to your desired position as shown in Figure 9.

The seat moves forward and backward. Position the seat where you have the best control of the machine and are most comfortable.

To adjust, pull the lever upward and move the seat forward or rearward (Figure 19).

Figure 19

Pull the lever (Figure 20) upward to tilt the back of the seat.

Figure 20

Lift the seat-tilt lever (Figure 21) upward and tilt the seat forward.

Figure 21

Important: You may need to bleed the fuel system when starting a new machine, the engine no longer runs due to lack of fuel, or you have replaced or serviced the fuel system components.

1. Raise the roll bar and secure it into place.

2. Sit on the seat and fasten the seat belt.

3. Ensure that the parking brake is set and the PTO switch is in the OFF position.

4. Remove your foot from traction pedal and ensure that it is in neutral.

5. Rotate the key switch to the ON/PREHEAT position.

   Note: An automatic timer then controls the preheat for a few seconds.

6. After preheating, rotate the key switch to the START position, crank the engine for no longer than 15 seconds, and release the key when the engine starts.

   Note: If additional preheating is required, turn the key to the OFF position, then to the ON/PREHEAT position. Repeat this process as required.

7. Move the throttle to idle speed or partial throttle and run the engine until it warms up.

   Important: When you start the engine for the first time; or after you change the engine oil, hydraulic fluid, overhaul the engine, or replace traction components; operate the machine in forward and reverse for 1 to 2 minutes. Also, operate the lift lever and PTO switch to ensure that all parts are properly operating. Turn the power-steering wheel to the left and right to check the steering response. Then shut the engine off, check the fluid levels, and check for oil leaks, loose parts, and any other malfunctions.

1. Move the throttle control rearward to the SLOW position.

2. Move the PTO switch to the OFF position.

3. Rotate key switch to the OFF position. Remove key from the switch to prevent accidental starting.

Note: If the engine stops running and the key switch is in the ON/PREHEAT position, and you leave the operator's seat, after a short delay a buzzer will sound to alert you to turn the key to the OFF position.

Pull the brake lever up and over to the left to engage the brake.

Figure 22

Pull the brake lever up and over to the right and lower the lever to disengage the brake.

1. Park the machine on a level surface.

2. Disengage the PTO, lower the cutting unit, and engage the parking brake.

3. Raise the hopper and secure it; refer to Raising the Hopper and Securing the Hopper in the Raised Position.

4. Shut off the engine and remove the key.

5. Tilt the seat forward.

6. Unlatch the grass chute (Figure 27).

   

   Figure 27

   1. Handle
   2. Latch
   3. Chute

7. Using the handle on the chute, remove the chute and clear it and the cutting unit opening (Figure 27).

8. Install the chute and secure it with the latches (Figure 27).

9. Lower the hopper; refer to Lowering the Hopper.

If the hopper sensor activates and the PTO automatically disengages when the hopper is not full or if the chute clogs before the sensor activates, you need to adjust the sensor position.

Adjust the sensor as follows:

1. Open the hopper door and use the prop rod to hold it open.

2. Adjust the hopper sensor based on the following:

   • For normal grass and weather conditions, rotate the sensor to the mid-point position (Figure 28).

   • For wet, dense grass conditions, when picking up leaves, or if the hopper fills before the sensor activates, rotate the sensor downward (Figure 28).

   • For dry, sparse grass conditions, or if the cutting unit disengages before the hopper fills, rotate the sensor upward (Figure 28).

   

   Figure 28

   1. Position the hopper sensor upward when grass is thin or conditions are dry.
   2. Position the hopper sensor in the middle when grass and weather conditions are normal.
   3. Position the hopper sensor downward when grass is thick, contains leaves, or conditions are wet.

You can adjust the height of cut continually from 2.5 to 9 cm (1 to 3-1/2 inches) by using the height-of-cut switch.

Push the height-of-cut switch (Figure 8) forward to lower the height of cut. Push the height-of-cut switch rearward to increase the height of cut.

Read the height of cut indicator on the height-of-cut gauge to ensure that it is set at the desired height.

Monitor the height-of-cut gauge as you mow and adjust the height of cut if needed.

Figure 29

1. Height-of-cut gauge
2. Height-of-cut switch

Note: If you leave the operator’s seat while the PTO switch is in the ON position, the machine will automatically shut off the engine.

Perform the following to reset the PTO function:

1. Push in the PTO switch knob.

2. Rotate the key to the OFF position.

3. Rotate the key to the ON/PREHEAT position, then start the engine.

4. Pull out the PTO switch knob.

• Practice driving before operating the machine, because it has a hydrostatic transmission and its characteristics are different than some turf-maintenance machines.

• To maintain enough power for the machine and cutting unit while mowing, regulate the traction pedal to keep the engine speed (rpm) high and constant. Decrease the ground speed as the load on the cutting blades increases; increase the ground speed as the load on the blades decreases. This allows the engine, working with the transmission, to sense the proper ground speed while maintaining a high blade-tip speed necessary for good quality of cut. Therefore, allow the traction pedal to move upward as the engine speed decreases, and press pedal slowly as the speed increases. When driving from 1 work area to another (with no load and the cutting unit raised), have throttle in the FAST position and press the traction pedal slowly but fully to attain the maximum ground speed.

• Before shutting off the engine, move all controls to the NEUTRAL position and move the throttle to the SLOW position. Rotate the key switch to the OFF position to shut off the engine.

• The engine does not run when the engine coolant is in over-temperature condition. Let the engine and cooling system cool, and check the cooling system; refer to Checking the Cooling System and Coolant Level.

• It is important to carry a 16 mm (5/8 inch) wrench while operating the machine. Use the wrench to open the bypass valve if you need to push or tow the machine (Figure 30).

Operator provided tool: 16 mm (5/8 inch) wrench

In case of an emergency, you can tow the machine a very short distance. However, Toro does not recommend this as standard procedure.

Important: Pushing or towing the machine faster than 3 to 5 km/h (2 to 3 mph) may damage the transmission. Do not push or tow the machine more than 100 m (110 yds). If you must move the machine a long distance, transport it on a truck or trailer. Whenever you push or tow the machine, open the bypass valve.

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

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

• Before tying down machine, lower the cutting unit completely.

• Bind the machine securely to the transport vehicle using straps, chains, cable, or ropes. Align both front and rear straps down and outward from the machine.

  Important: Do not loop tie-down straps, chains, cable, or ropes across the operator platform.

Binding the Front of the Machine

Loop tie-downs around the anchor hoops (Figure 31).

Figure 31

1. Front tie-down locations

Binding the Back of the Machine

Insert a bolt or drawbar pin into the hitch and use it as the rear tie-down point (Figure 32).

Figure 32

1. Rear tie-down location

1. Rotate the radiator; refer to Accessing the Engine from the Left Side.

2. Place a jack under the frame tube (Figure 33 and Figure 34), directly under the ROPS tube, or as close as possible.

   

   Figure 33

   Frame tube

   

   Figure 34

   Frame tube

Jack up the rear-left or rear-right side of the machine using the jacking points shown in Figure 35.

Figure 35

Rear jacking points

Your machine can tow trailers on flat ground with a maximum gross trailer weight (GTW) up to 200 kg (441 lb). Use a drawbar pin when towing a trailer (Figure 32).

Important: When hauling cargo or towing a trailer, do not overload the machine or trailer. Overloading can cause poor performance or damage to the hydraulic-drive units, tires, and frame.

1. Park the machine on a level surface.

2. Raise the hopper to the fully raised position; refer to Raising the Hopper.

3. Secure the hopper by performing the following:

   1. Push the pin on magnetic safety lock inward (Figure 36).

   2. While still holding the pin in, lower magnetic safety lock onto the hydraulic cylinder (Figure 36).

   3. Repeat steps 1 and 2 on the other side.

   

   Figure 36

Grease specification: No. 2 lithium grease

Important: Dusty and dirty operating conditions could cause dirt to get into the bearings and bushings, resulting in accelerated wear.

Note: Lubricate the grease fittings immediately after every washing, regardless of interval specified.

1. Remove the bolts at the front of the cover and remove the belt cover.

2. Wipe the grease fitting clean so debris is not forced into the bearing or bushing.

3. Pump grease into the bearing or bushing.

4. Wipe off excess grease.

5. Install the belt cover and bolts.

Figure 37

Grease specification: No. 2 lithium grease

Important: Dusty and dirty operating conditions could cause dirt to get into the bearings and bushings, resulting in accelerated wear.

Note: Lubricate the grease fittings immediately after every washing, regardless of interval specified.

1. Wipe the grease fitting clean so debris is not forced into the bearing or bushing.

2. Pump grease into the bearing or bushing.

3. Wipe off excess grease.

The bearing and bushing lubrication points are as follows:

• Traction pedal pivot bushing (Figure 38)

  

  Figure 38

• Cutting unit lift arm pivot points (Figure 39)

  

  Figure 39

• Remove the cover and grease PTO idler-pulley bracket (Figure 40)

  

  Figure 40

• Transmission idler (Figure 41).

  

  Figure 41

• Front wheel bearings (Figure 42)

  

  Figure 42

• Hopper arms (Figure 43)

  

  Figure 43

  Right side shown; repeat on other side

• Hopper pivots and steering pivot points (Figure 44)

  

  Figure 44

• Hopper cylinder pivot and rear-axle pivot (Figure 45)

  

  Figure 45

Grease specification: No. 2 lithium grease

Important: Dusty and dirty operating conditions could cause dirt to get into the bearings and bushings, resulting in accelerated wear.

Note: Lubricate the grease fittings immediately after every washing, regardless of interval specified.

1. Wipe grease fitting clean so debris is not forced into the bearing or bushing.

2. Pump grease into the bearing or bushing.

3. Wipe off excess grease.

4. Remove the bolt and open the forward shield.

• Forward U-joint of the driveshaft at the mower gearbox (Figure 46).

  

  Figure 46

• Rear U-joint of the driveshaft at the PTO (Figure 47).

  

  Figure 47

Lubrication specification: Anti-sieze compound

1. Disconnect the driveshaft from the cutting-unit gearbox; refer to Disconnecting the Driveshaft from the Cutting-Unit Gearbox.

2. Pull the front half of the driveshaft (Figure 48) forward about 25 cm (10 inches).

   

   Figure 48

   1. 25 cm (10 inches)
   2. Splines (U-joint coupling)
   3. Splines (gearbox shaft)
   4. Splines (driveshaft)

3. Wipe clean the splines of the gearbox shaft and the splines of the driveshaft (Figure 48).

4. Wipe clean the sliding surface of the forward driveshaft (Figure 48).

5. Apply anti-sieze compound to the splines of the gearbox shaft and U-joint coupling (Figure 48).

6. Apply anti-sieze to the sliding surface of the forward driveshaft (Figure 48).

7. Move the front half of the driveshaft rearward to align the U-joint coupling with the gearbox shaft.

8. Wipe off excess anti-sieze compound from the driveshaft.

9. Connect the driveshaft to the cutting-unit gearbox; refer to Connecting the Driveshaft to the Cutting-Unit Gearbox.

Note: Replace the air cleaner more frequently (every few hours) if operating conditions are extremely dusty or sandy.

Cleaning the Air-Cleaner Cover

Maintenance Service Interval	Maintenance Procedure
Every 50 hours	Remove the air-cleaner cover and clean out the debris. Do not remove the filter.

Check the air-cleaner body for damage which could cause an air leak. Replace a damaged air-cleaner body.

Clean the air-cleaner cover as shown in Figure 53.

Figure 53

The engine ships with oil in the crankcase.

Crankcase capacity: approximately 3.2 L (3.4 US qt) with the filter.

Engine oil specification:

• Engine oil-type:API Classification Level Required: CH-4, CI-4 or higher.

• Engine oil viscosity: See the table below.

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

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

Note: Toro Premium Engine Oil is available from your authorized Toro distributor in either 15W-40 or 10W-30 viscosity. See the parts catalog for part numbers.

Figure 55

Checking the Engine-Oil Level

Maintenance Service Interval	Maintenance Procedure
Before each use or daily	Check the engine-oil level.Check the engine-oil level before the engine is first started and daily thereafter.

Note: The best time to check the engine oil is when the engine is cool before it has been started for the day. If you have already run the engine, allow the oil to drain back down to the sump for at least 10 minutes before checking. If the oil level is at or below the low mark on the dipstick, add oil to bring the oil level to the high mark. Do not overfill. If the oil level is between the high and low marks, you do not need to add oil.

1. Lower the radiator and check the engine-oil level as shown in Figure 52 and Figure 56.

2. If needed, raise the hopper to the fully raised position, secure it with the magnetic safety locks, and raise the engine cover after removing the cover fasteners.

Figure 56

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

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

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

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

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

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

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

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

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

• Ensure that your fuel comes from a quality supplier.

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

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

1. Park the machine on a level surface.

2. Engage the parking brake.

3. Wait for the engine to cool.

4. Ensure that the fuel tank is at least half full.

5. Unlatch the radiator; refer to Accessing the Engine from the Left Side.

6. Place a drain pan under the air-bleed screws.

7. Confirm and ensure the fuel filter lever is in the ON position (Figure 58).

8. Open the first air-bleed screw on the fuel-injection pump (Figure 58).

9. Allow the air to escape and wait for fuel to escape.

10. After fuel starts to escape, tighten the first air-bleed screw (Figure 58).

11. Open the second air-bleed screw on the fuel-injection pump (Figure 58).

12. Allow the air to escape and wait for fuel to escape.

13. After fuel starts to escape, tighten the second air-bleed screw (Figure 58).

    

    Figure 58

    1. Engine air-bleed screw
    2. Fuel filter lever in the ON position
    3. First air-bleed screw
    4. Second air-bleed screw
    5. Fuel filter

    Note: The engine should start after you perform this procedure. However, if the engine does not start, air may be trapped between the injection pump and the injectors. Contact your authorized Toro distributor.

14. Wipe clean any fuel that has accumulated around the injection pump.

1. Clean the area around the fuel-filter (Figure 59).

2. Rotate the fuel filter lever to the OFF position (Figure 59).

3. Remove the filter and clean the filter-mounting surface (Figure 59).

4. Lubricate the filter gasket with clean fuel.

5. Assemble the filter element onto the filter assembly.

6. Assemble the filter bowl and bowl nut onto the filter head and tighten the nut by hand

7. Rotate the fuel filter lever to the ON position (Figure 58).

   

   Figure 59

   1. Fuel filter lever in the OFF position
   2. Fuel filter

8. Prime the fuel system; refer to Bleeding the Fuel System.

   Note: Repair all fuel leaks before operating the machine.

• If you store the machine for an extended period, use a siphon pump to empty the fuel tank.

• If the fuel system becomes contaminated, use a siphon pump to empty the fuel tank, clean the tank, and use clean diesel fuel to flush out the tank.

Figure 60

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

1. Park the machine on a level surface.

2. Disengage the PTO, lower the cutting unit, and engage the parking brake.

3. Shut off the engine and remove the key.

4. Raise and secure the hopper; refer to (Securing the Hopper in the Raised Position).

5. Remove the 2 bolts and washers from the battery cover (Figure 61).

6. Remove the battery cover (Figure 61).

   

   Figure 61

   1. Bolt
   2. Washer
   3. Battery cover
   4. Battery

Important: Before welding on the machine, disconnect the negative cable from the battery to prevent damage to the electrical system.

Installing the Battery

Install the battery as shown in Figure 63.

Figure 63

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

The fuse block and fuses are located to the left of the operator’s seat (Figure 65).

Figure 65

1. Fuse block

Use the following table when replacing a fuse:

Safety Fuses—Figure 66

Figure 66

1. Switches and buzzer (3 A)
2. Grass catcher and PTO clutch (15 A)
3. Electronic control unit (5 A)
4. Cutting unit (15 A)
5. Alternator and dashboard (5 A)
6. Beacon (5 A)
7. Engine (15 A)
8. Reserved for accessories (15 A)

There are also 2 fuses (40 A) that protect the main machine wire harness (Figure 67).

Figure 67

1. Fuses (40 A)

Prevent corrosion of wiring terminals by applying Grafo 112X (Skin-over) grease, Toro Part No. 505-47, to the inside of all harness connectors whenever you replace the harness.

Important: Whenever working with the electrical system, always disconnect the battery cables, negative (-) cable first, to prevent wiring damage from short-outs.

Wheel lug nut torque specification: 85 to 90 N∙m (62 to 66 ft-lb)

Torque the lug nuts at the front and rear wheels in a crossing pattern as shown in Figure 68 to the specified torque.

Figure 68

The rear-axle-steering stops help prevent over-travel of the steering cylinder in case of impact on the rear wheels. Adjust the stops so that there is 0.23 cm (0.090 inch) clearance between the bolt head and the knuckle on the axle when you turn the steering wheel completely to the left or to the right.

Thread the bolts in or out until you attain a clearance of 0.23 cm (0.090 inch); refer to Figure 70.

Figure 70

1. Steering stop (right side shown)

Front axle capacity: 1.5 L (50.7 US oz)

Axle oil specification: ISO VG220

1. Park the machine on a level surface.

2. Disengage the PTO, lower the cutting unit, and engage the parking brake.

3. Raise and secure the hopper; refer to Raising the Hopper.

4. Rotate the seat forward.

5. Remove the grass chute; refer to Clearing the Grass Chute.

6. Shut off the engine and remove the key.

7. Place a drain pan under the drain plug.

8. Remove the drain plug and allow the oil to drain.

   

   Figure 71

   1. Drain plug

9. Install the drain plug.

10. Remove the fill plug.

    

    Figure 72

    1. Fill plug

11. Using a funnel, add the correct amount of new oil.

12. Install the grass chute.

13. Lower the hopper; refer to Lowering the Hopper.

Cooling system capacity: 6.4 L (6.8 US qt)

Coolant-type specification:

1. Check the level of the coolant in the expansion tank (Figure 7).

2. If the coolant is low, remove the expansion-tank cap and add the recommended replacement coolant as required.

   Do not use water only or alcohol-based coolants.Do not overfill.

3. Install the expansion-tank cap.

Figure 73

1. Cold level for coolant
2. Expansion-tank cap

To prevent the engine from overheating, keep the radiator screen and radiator clean. Check the radiator screen and radiator for buildup of grass, dust, and debris, and if necessary, clean any debris off these parts (Figure 74).

Note: If the PTO shuts off due to high engine temperature, first check the radiator screen and radiator for an excessive buildup of debris. Clean the system before operating the machine. Do not shut off the engine immediately; allow the engine to cool by running it without a load.

Clean the radiator as follows:

1. Remove the radiator screen.

2. Working from the fan side of the radiator, blow with low pressure, 172 kPa (25 psi), compressed air (do not use water). Repeat this step from the front of the radiator and again from the fan side.

3. After you have thoroughly cleaned the radiator, clean out any debris that may have collected in the channel at the radiator base.

4. Clean the radiator screen and install it onto the machine.

   

   Figure 74

   1. Bolt
   2. Screen
   3. Radiator

After adjusting the service brakes after the first 50 hours of operation, you may need to adjust the brakes again after considerable use.

1. Park the machine on a level surface.

2. Disengage the PTO, lower the cutting unit, and engage the parking brake.

3. Shut off the engine and remove the key.

4. Disengage the parking brake (Figure 11).

5. Check the gap between the disc and the brake pads (Figure 75). Ensure the gap is between 0.4 and 0.6 mm (0.016 to 0.024 inch).

6. If an adjustment is necessary, loosen the front and rear jam nut of the brake cable (Figure 75).

   

   Figure 75

   1. Brake pad gap (0.4 and 0.6 mm or 0.016 to 0.024 inch)
   2. Back jam nut
   3. Front jam nut

7. Tighten the jam nuts to lock the cable position.

8. Check the gap with the brake disengaged.

9. Repeat steps 6 through 8 until you set the parking brake to the desired position.

Check alternator belt for wear or damage.

Note: Replace the alternator belt if you find it worn or damaged.

1. Park the machine on a level surface.

2. Disengage the PTO, lower the cutting unit, and engage the parking brake.

3. Shut off the engine and remove the key.

4. Loosen the alternator pivot bolt and lock bolt (Figure 76).

5. Tension the alternator belt until you achieve 10 mm (3/8 inch) belt deflection midway between the pulleys with a force of 4.5 kg (10 lb).

6. Tighten the alternator lock bolt (Figure 76).

7. Tighten the alternator pivot bolt (Figure 76).

Figure 76

1. Alternator belt
2. Alternator lock bolt
3. Alternator pivot bolt

The hydraulic-fluid reservoir is filled at the factory with high-quality hydraulic fluid. Check the level of the hydraulic fluid before you start the engine for the first time and daily thereafter.

Hydraulic fluid viscosity: 5W-50

Use fluids that meet all the following material properties and industry specifications. Consult with your lubricant distributor to identify a satisfactory product.

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

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

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

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 20ml (2/3 fl oz) bottles. 1 bottle is sufficient for 15 to 22 L (4 to 6 US gallons) of hydraulic oil. Order Toro Part No. 44-2500 from your authorized Toro distributor.

Important: Ensure that you remove the grass chute before performing this procedure; otherwise, damage may occur.

1. Park the machine on a level surface.

2. Disengage the PTO, lower the cutting unit, and engage the parking brake.

3. Raise the hopper and engage the magnetic safety locks; refer to Securing the Hopper in the Raised Position.

4. Unlatch and remove the grass chute; refer to Clearing the Grass Chute.

5. Pull and rotate the rear latch pins on both sides of the cutting unit.

   

   Figure 86

   1. Rear latch

6. Shut off the engine and remove the key.

7. Lift the operator platform upwards and engage the locking lever (Figure 87).

8. Raise the cutting unit by pulling up on the front of the cutting unit until it latches in the UP position.

9. Perform any maintenance on the cutting unit.

10. While holding the cutting unit, pull up on the cutting unit latch lever and lower the cutting unit.

    

    Figure 87

11. Confirm and ensure that the rear latch pins are engaged (Figure 86).

12. Return the operator platform to the work position.

13. Lift the operator platform, allowing the locking lever to automatically disengage, lowering the operator platform back to the work position.

14. Insert the grass chute, rotate the operator’s seat, and lower the hopper.

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

Replace the blades if they hit a solid object, they are out of balance, or a they are bent. To ensure best performance and continued safety conformance of the machine, use genuine Toro replacement blades. Replacement blades made by other manufacturers may not meet the safety standards.

1. Rotate the quarter-turn fastener and open the universal-joint cover from the belt cover (Figure 91).

   

   Figure 91

2. Disconnect the forward end of the driveshaft from the cutting-unit gearbox by pressing the spring-loaded pin, and then pulling the end of the driveshaft rearward (Figure 91).

1. Align the splines of the driveshaft-universal joint with the splines in the gearbox coupling.

2. Press the spring-loaded pin and then push the end of the driveshaft forward.

3. Release the spring-loaded pin and check that the universal joint of the driveshaft is locked into the cutting-unit gearbox; refer to Figure 91.

4. Close the universal-joint cover and secure it with the fastener.

1. Park the machine on a level surface.

2. Disengage the PTO and engage the parking brake.

3. Before lowering the cutting unit, pull and rotate the rear link pins at both sides of the cutting unit (Figure 86).

4. Lower the cutting unit and tilt the hopper back.

5. Shut off the engine and remove the key.

6. Tilt the seat forward.

7. Remove the grass chute; refer to Clearing the Grass Chute.

8. Disconnect the electrical connectors on the right side of the cutting unit.

9. Disconnect the universal joint of the driveshaft from the cutting-unit gearbox; refer to Disconnecting the Driveshaft from the Cutting-Unit Gearbox.

10. Remove the 2 hairpin cotter pins and 2 clevis pins that secure the lift arms at each side of the cutting unit (Figure 92).

    

    Figure 92

    1. Clevis pins
    2. Hairpin cotter pins

11. Roll the cutting unit forward and away from the traction unit.

1. Park the machine on a level surface.

2. Tilt the hopper back or raise the hopper and secure it with the magnetic locks in the raised position.

   Shut off the engine and remove the key.

3. Remove the grass chute; refer to Clearing the Grass Chute.

4. Roll the cutting unit rearward to the traction unit.

5. Install the hairpin cotter pin and clevis pin to secure the lift arms on each side; refer to Figure 92.

6. Connect the universal joint of the driveshaft from the cutting-unit gearbox; refer to Connecting the Driveshaft to the Cutting-Unit Gearbox.

7. Install the grass chute; refer to Clearing the Grass Chute.

8. Tilt the seat rearward.

9. Start the engine.

10. Lower the hopper.

11. Raise the cutting unit.

1. Remove the 2 bolts and washers on the front of the cover (Figure 93).

2. Remove the 2 bolts and washers on the back of the cover (Figure 93).

3. Remove the belt cover from the cutting unit.

1. Install the cover over the belt Figure 93.

2. Install the 2 bolts and washers on the front of the cover (Figure 93).

3. Install the 2 bolts and washers on the back of the cover (Figure 93).

   

   Figure 93

   1. Bolt
   2. Washer
   3. Cover

Gearbox oil specification: PG2 and API GL4, GL5, or MT1

Gearbox oil viscosity: LSX 75W90

Gearbox oil capacity: 0.25 L (8.5 oz)

Ensure the hopper and chute seal properly and does not flatten the seal.

1. Loosen the 4 bolts that secure the hopper lift supports to the frame under the hopper (Figure 107).

   

   Figure 107

   1. Bolts

2. If you need to get the desired movement of the hopper, loosen the safety nut at the top of the hydraulic cylinder rod (Figure 108).

   

   Figure 108

   1. Bolt
   2. Safety nut

3. Slide the hopper forward or rearward until the hopper inlet aligns with the chute seal (Figure 109).

   

   Figure 109

   1. Chute seal
   2. Hopper inlet

4. Tighten the 4 bolts (Figure 107).

1. Check the gap between the latch and the door. Ensure it is 2 mm ( 0.079 inches).

2. If necessary, adjust the latch with the latch bolt to get the correct gap.

   Note: If necessary, use the door bolt to change the automatic opening angle of the door.

   

   Figure 110

   1. Gap (2 mm or 0.079 inches)
   2. Latch
   3. Latch bolt
   4. Door bolt

1. 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. Insert an air nozzle in the gap between the belt cover and the top of the cutting unit. Use compressed air to clear any accumulated grass from under the cutting unit belt cover.

1. 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. Prepare the cutting unit for maintenance; refer to Raising and Lowering the Cutting Unit into the Maintenance Position.

4. Remove any packed grass or debris, and clean as necessary.

1. Open the hopper door.

2. Pull the release lever on the bottom of the hopper screen downward (Figure 111).

   

   Figure 111

   1. Release lever
   2. Hopper screen

3. Remove the hopper screen and clean it (Figure 112).

   

   Figure 112

4. Install the hopper screen.

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