Groundsmaster® 4110 Rotary Mower

To stop the machine, reduce the amount of foot pressure that you apply to the traction pedal until the pedal to returns to the NEUTRAL position (Figure 3).

There are 2 foot pedals that operate individual wheel brakes for turning assistance, parking, and to aid in better side-hill traction. A latch connects the pedals for parking-brake operation and transport (Figure 3).

The pedal-locking latch connects the pedals together when you set the parking brake (Figure 3).

Press the tilt-steering lever down to tilt the steering wheel to the desired position, then release the lever to lock the adjustment (Figure 3).

A knob on the left side of the console actuates the parking-brake lock (Figure 3).

To set the parking brake, connect the pedals with the locking latch, push down on both pedals, and pull out the parking-brake latch. To release the parking brake, press both pedals until the parking-brake latch retracts.

Press the hazard-light switch to activate the hazard lights (Figure 3).

Press the left side of the turn-signal switch to activate the left-turn signal and the right side of the switch to activate the right-turn signal (Figure 3).

The key switch (Figure 4) has 3 positions: OFF, ON/PREHEAT, and START.

Figure 4

1. Lift switches
2. PTO switch
3. Key switch
4. InfoCenter
5. High-Low speed control
6. Engine-speed switch
7. Light switch (optional)

The engine-speed switch has 2 modes to change the engine speed (Figure 4).

By momentarily tapping the switch, you can increase or decrease the engine speed in 100-rpm increments. When you hold the switch down, the engine automatically moves to HIGH or LOW IDLE, depending on which switch you press.

The PTO switch has 2 positions: OUT (START) and IN (STOP). Pull the PTO button out to engage the mower-deck blades. Push the button in to disengage the mower-deck blades (Figure 4).

The lift switches raise and lower the mower decks (Figure 4). Press the switches forward to lower the mower decks and rearward to raise the mower decks. When starting the machine, with the mower decks in the down position, press the lift switch down to allow the mower decks to float and mow.

Note: The decks do not lower while in the High-speed range and they do not raise or lower if the operator is out of the seat when the engine is running. Also, the decks lower with the key in the ON position and the operator in the seat.

The cruise-control switch locks in the pedal position to maintain the desired ground speed (Figure 5). Pressing the rear of the switch turns off the cruise control, the middle position of the switch enables the cruise-control function, and the front of the switch sets the desired ground speed.

Note: Pressing either brake pedal or moving the traction pedal into the REVERSE position, for 1 second, also disengages the pedal position.

Figure 5

1. Power-point port
2. Cruise-control switch

The power-point port is used to power optional electrical accessories (Figure 5).

Move the seat-adjustment lever on the side of the seat outward, slide the seat to the desired position, and release the lever to lock the seat into position (Figure 6).

Figure 6

1. Seat-adjustment lever
2. Armrest-adjustment knob
3. Weight-adjustment lever
4. Weight gauge
5. Seat-back adjustment lever

Rotate the knob to adjust the armrest angle (Figure 6).

Move the lever to adjust the seat-back angle (Figure 6).

The weight gauge indicates when the seat is adjusted to the weight of the operator (Figure 6). Adjust the height by positioning the suspension within the range of the green region.

Use this lever to adjust to the proper weight of the operator (Figure 6). Pull up the lever to increase the air pressure and push down to decrease the air pressure. The proper adjustment is correct when the weight gauge is in the green region.

Sets the cab to either recirculate the air in the cabin or to draw air into the cabin from outside (Figure 7).

• Set it to recirculate the air when using the air conditioning.

• Set it to draw air in when using the heater or fan.

Rotate the fan control knob to regulate the speed of the fan (Figure 7).

Rotate the temperature control knob to regulate the air temperature in the cab (Figure 7).

Use this switch to turn the wind shield wipers on or off (Figure 7).

Use this 15 A, 12 V DC power outlet to power compatible devices (Figure 7).

Use this switch to turn the headlights and tail light on or off (Figure 7).

Use this switch to turn the flashers (hazard lights) on or off (Figure 7).

Use this switch to turn the air conditioning on or off (Figure 7).

Lift up the latches to open the windshield (Figure 8). Press in the latch to lock windshield to the OPEN position. Pull out and down on the latch to close and secure the windshield.

Figure 8

1. Windshield latch

Lift up the latches to open the rear window. Press in the latch to lock the window in the OPEN position. Pull out and down on the latch to close and secure the window (Figure 8).

Important: You must close the rear window before opening the hood or damage to the hood or window may occur.

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

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

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

Drain water or other contaminants from the water separator; refer to Servicing the Water Separator.

The correct air pressure in the tires is 172 to 207 kPa (25 to 30 psi).

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

Figure 11

Torque the wheel-lug nuts to 115 to 136 N∙m (85 to 100 ft-lb) in the order shown in Figure 12 and Figure 13.

Figure 12

Front Wheels

Figure 13

Rear Wheels

Cab model only

Side View Mirrors

While sitting in the seat, have a helper adjust the side view mirrors (Figure 14) to attain the best view around the side of the machine.

Figure 14

1. Side view mirrors
2. Rearview mirror
3. Lever

1. Loosen the mounting nuts and position each headlight so that it points straight ahead. Tighten the mounting nut just enough to hold the headlight in position.

2. Place a flat piece of sheet metal over the face of the headlight.

3. Mount a magnetic protractor onto the plate. While holding the assembly in place, carefully tilt the headlight downward 3 degrees, then tighten the nut.

4. Repeat the procedure on the other headlight.

Mount the skids in the lower position when operating at heights of cut greater than 64 mm (2-1/2 inches) and in the higher position when operating at heights of cut lower than 64 mm (2-1/2 inches).

Figure 23

The mower-deck rollers should be mounted in the lower position when operating at height-of-cuts greater than 64 mm (2-1/2 inches) and in the higher position when operating in height-of-cuts lower than 64 mm (2-1/2 inches).

Figure 24

To ensure proper operation of the mower deck, there must be a 10 to 16 mm (0.38 to 0.62 inch) clearance between the tips of the side and center mower-deck blades (Figure 25).

1. Raise mower deck so the blades are visible and block the center deck section so it cannot fall accidentally.

   Note: The wing decks must be horizontal to the center mower deck.

2. Rotate a center and adjoining side blade so the blade tips are aligned. Measure the distance between the blade tips (Figure 25).

   Note: The distance should be approximately 10 to 16 mm (0.38 to 0.62 inch)

   

   Figure 25

3. To adjust distance, locate adjuster bolt on rear pivot link of the mower deck (Figure 26).

4. Loosen the jam nut on the adjuster bolt.

5. Loosen or tighten the adjuster bolts until you attain a 10 to 16 mm (0.38 to 0.62 inch) clearance, then tighten the jam nut.

6. Repeat the procedure on the opposite side of the mower deck.

   

   Figure 26

   1. Adjuster bolt
   2. Jam nut

Due to differences in grass conditions and the counterbalance setting of the traction unit, a sample area of grass should be cut and the appearance checked before formal cutting is started.

1. Set all mower decks to the desired height-of-cut; refer to Adjusting the Height-of-Cut.

2. Check and adjust the air pressure in the front and rear tire of the machine to 172 to 207 kPa (25 to 30 psi).

3. Check and adjust the air pressure in all of the caster tires for the mower deck to 345 kPa (50 psi).

4. Check the charge and counterbalance pressures with the engine at HIGH IDLE, using hydraulic-test ports.

   Note: Adjust the counterbalance to 2241 kPa (325 psi).

5. Check for bent blades; refer to Checking for a Bent Blade.

6. Cut grass in a test area to determine if all mower decks are cutting at the same height.

7. If mower-deck adjustments are still needed, find a flat surface using a 2 m (6 ft) or a longer straight edge.

8. To ease measuring the blade plane, raise the height-of-cut to 7.6 to 10.1 cm (3 to 4 inches); refer to Adjusting the Height-of-Cut.

9. Lower the mower decks onto a flat surface and remove the covers from the top of the mower decks.

10. Loosen the flange nut, securing the idler pulley, to release the belt tension on each mower deck.

The machine has interlock switches in the electrical system. These switches are designed to disable the traction and PTO functions when you rise from the seat while pressing the traction pedal. However, you may rise from the seat while the engine is running and the traction pedal is in the NEUTRAL position. Although the engine continues to run if you shut off the PTO switch and release the traction pedal, shut off the engine before rising from the seat.

1. Drive the machine slowly to a large, open area. Lower the mower deck, shut off the engine, and apply the parking brake.

2. Sit on the seat and press the traction pedal. Try to start the engine. The engine should not crank. If the engine cranks, there is a malfunction in the interlock system that you should correct before you operate the machine.

3. Sit on the seat and start the engine. Rise from the seat and move the PTO switch to ON. The PTO should not run. If the PTO s, there is a malfunction in the interlock system that you should correct before you operate the machine.

4. Sit on the seat, set the parking brake, and start the engine. Move the traction pedal out of the NEUTRAL position. The InfoCenter will display “traction not allowed” message and the machine should not move. If the machine moves forward or backward, there is a malfunction in the interlock system that you should correct before you operate the machine.

The InfoCenter LCD display shows information about your machine, such as the operating status and various diagnostics (Figure 29). There is a splash screen and a main information screen of the InfoCenter. You can switch between the splash and main information screens at any time by pressing any InfoCenter button and then selecting the appropriate directional arrow.

Figure 29

1. Indicator light
2. Right button
3. Middle button
4. Left button

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

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

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

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

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

InfoCenter Icon Description

SERVICE DUE	Indicates when scheduled service should be performed
	Engine rpm/status—indicates the engine rpm
	Hour meter
	Info icon
	Sets the maximum traction speed
	Fast
	Slow
	Fan Reversal—indicates when the fan is reversed
	Fuel level
	Stationary regeneration required
	Air intake heater is active
	Raise the left deck
	Raise the center deck
	Raise the right deck
	Operator must sit in seat
	Parking Brake Indicator—indicates when the parking brake is on
	Identifies the range as High
	Neutral
	Identifies the range as Low
	Coolant Temperature-indicates the engine coolant temperature in either °C or °F
	Temperature (hot)
	Traction or Traction Pedal
	Denied or not allowed
	Engine Start
	PTO—indicates that the PTO is on
	Stop or shutdown
	Engine
	Key switch
	Indicates when the mower decks are being lowered
	Indicates when the mower decks are being raised
	PIN code
	Hydraulic-Fluid Temperature—indicates the hydraulic-fluid temperature
	CAN bus
	InfoCenter
	Bad or failed
	Center
	Right
	Left
	Bulb
	Output of TEC controller or control wire in harness
	High: over-allowed range
	Low: under-allowed range
/	Out of range
	Switch
	Operator must release the switch
	Operator should change to the indicated state
Symbols are often combined to form sentences. Some examples are shown below
	Operator should put the machine in neutral
	Engine start denied
	Engine shutdown
	Engine coolant is too hot
	Hydraulic fluid is too hot
	Sit down or engage the parking brake

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

1. Move the machine to the job site and align the machine outside the cutting area for the first cutting pass.

2. Ensure that the PTO switch is set to the DISABLE position.

3. Move the lever for the mow-speed limiter forward.

4. Press the throttle-speed switch to set the engine speed to HIGH IDLE.

5. Use the joystick to lower the cutting units to the ground.

6. Press the PTO switch to prepare cutting units for operation.

7. Use the joystick to raise the cutting units off the ground.

8. Begin moving the machine toward the cutting area and lower the cutting units.

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

9. When you complete the mowing pass, use the joystick to lift the cutting units.

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

The diesel particulate filter (DPF) is part of the exhaust system. The diesel-oxidation catalyst of the DPF reduces harmful gasses and the soot filter removes soot from the engine exhaust.

The DPF regeneration process uses heat from the engine exhaust to incinerate the soot accumulated on the soot filter, converting the soot to ash, and clears the channels of the soot filter so that filtered engine exhaust flows out the DPF.

The engine computer monitors the accumulation of soot by measuring the back pressure in the DPF. If the back pressure is too high, soot is not incinerating in the soot filter through normal engine operation. To keep the DPF clear of soot, remember the following:

• Passive regeneration occurs continuously while the engine is running—run the engine at full engine speed when possible to promote DPF regeneration.

• If the back pressure is too high, the engine computer signals you through the InfoCenter when additional processes (assist and reset regeneration) are running.

• Allow the assist and reset regeneration process to complete before shutting off the engine.

Operate and maintain your machine with the function of the DPF in mind. Engine load at high idle engine speed generally produce adequate exhaust temperature for DPF regeneration.

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

DPF Soot Accumulation

• Over time, the DPF accumulates soot in the soot filter. The computer for the engine monitors the soot level in the DPF.

• When enough soot accumulates, the computer informs you that it is time to regenerate the diesel particulate filter.

• DPF regeneration is a process that heats the DPF to convert the soot to ash.

• In addition to the warning messages, the computer reduces the power produced by the engine at different soot-accumulation levels.

Engine Warning Messages—Soot Accumulation

Indication Level	Fault Code	Engine Power Rating	Recommended Action
Level 1: Engine Warning	Figure 32 Check EngineSPN 3719, FMI 16	The computer de-rates the engine power to 85%	Perform a parked regeneration as soon as possible; refer to Parked Regeneration.
Level 2: Engine Warning	Figure 33 Check EngineSPN 3719, FMI 0	The computer de-rates the engine power to 50%	Perform a recovery regeneration as soon as possible; refer to Recovery Regeneration.

DPF Ash Accumulation

• The lighter ash is discharged through the exhaust system; the heavier ash collects in the soot filter.

• Ash is a residue of the regeneration process. Over time, the diesel particulate filter accumulates ash that does not discharge with the engine exhaust.

• The computer for the engine calculates the amount of ash accumulated in the DPF.

• When enough ash accumulates, the engine computer sends information to the InfoCenter in the form of a system advisory or an engine fault to indicate the accumulation of ash in the DPF.

• The advisory and faults are indications that it is time to service the DPF.

• In addition to the warnings, the computer reduces the power produced by the engine at different ash-accumulation levels.

InfoCenter Advisory and Engine Warning Messages—Ash Accumulation

Indication Level	Advisory or Fault Code	Engine Speed Reduction	Engine Power Rating	Recommended Action
Level 1: System Advisory	Figure 34 Advisory #179	None	100%	Notify your service department that advisory #179 displays in the InfoCenter.
Level 2: Engine Warning	Figure 35 Check EngineSPN 3720, FMI 16	None	The computer de-rates the engine power to 85%	Service the DPF; refer to Servicing the Diesel-Oxidation Catalyst (DOC) and the Soot Filter
Level 3: Engine Warning	Figure 36 Check EngineSPN 3720, FMI 0	None	The computer de-rates the engine power to 50%	Service the DPF; refer to Servicing the Diesel-Oxidation Catalyst (DOC) and the Soot Filter
Level 4: Engine Warning	Figure 37 Check EngineSPN 3251, FMI 0	Engine speed at max torque + 200 rpm	The computer de-rates the engine power to 50%	Service the DPF; refer to Servicing the Diesel-Oxidation Catalyst (DOC) and the Soot Filter

Types of Diesel Particulate Filter Regeneration

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

Type of Regeneration	Conditions for DPF regeneration	DPF description of operation
Passive	Occurs during normal operation of the machine at high-engine speed or high-engine load	The InfoCenter does not display an icon indicating passive regeneration.
		During passive regeneration, the DPF processes high-heat exhaust gasses; oxidizing harmful emissions and burning soot to ash.
		Refer to Passive DPF Regeneration.
Assist	Occurs as a result of low-engine speed, low-engine load, or after the computer detects back pressure in the DPF	When the assist/reset-regeneration icon is displayed in the InfoCenter, an assist regeneration is in progress.
		During assist regeneration, the computer controls the intake throttle to increase the exhaust temperature, enabling assist regeneration to occur.
		Refer to Assist DPF Regeneration.
Reset	Occurs after assist regeneration only if the computer detects that assist regeneration did not sufficiently reduce the soot level	When the assist/reset-regeneration icon is displayed in the InfoCenter, a regeneration is in progress.
	Also occurs every 100 hours to reset baseline sensor readings
		During reset regeneration, the computer controls the intake throttle and fuel injectors to increase the exhaust temperature during regeneration.
		Refer to Reset Regeneration.

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

Type of Regeneration	Conditions for DPF regeneration	DPF description of operation
Parked	Soot buildup occurs as a result of prolonged operation at low-engine speed or low-engine load. May also occur as a result of using incorrect fuel or oil	When the parked-regeneration icon is displayed in the InfoCenter, a regeneration is requested.
	The computer detects back pressure due to soot buildup and requests a parked regeneration
		• Perform the parked regeneration as soon as possible to avoid needing a recovery regeneration.
		• A parked regeneration requires 30 to 60 minutes to complete.
		• You must have at least a 1/4 tank of fuel in the tank.
		• You must park the machine to perform a recovery regeneration.
		Refer to Parked Regeneration.
Recovery	Occurs as a result of ignoring parked regeneration requests and continuing operation, adding more soot when the DPF is already in need of a parked regeneration	When the recovery-regeneration icon is displayed in the InfoCenter, a recovery regeneration is requested.
		Contact your Authorized Toro Distributor to have a service technician perform the recovery regeneration.
		• A recovery regeneration requires up to 4 hours to complete.
		• You must have at least a 1/2 tank of fuel in the machine.
		• You must park the machine to perform a recovery regeneration.
		Refer to Recovery Regeneration.

Assist DPF Regeneration

Figure 38

Assist/reset-regeneration icon

• The assist/reset-regeneration icon displays in the InfoCenter (Figure 38).

• The computer takes control of the intake throttle to increase the temperature of the engine exhaust.

• While operating the machine, run the engine at full engine speed when possible to promote DPF regeneration.

• The icon displays in the InfoCenter while the assist regeneration is processing.

• Whenever possible, do not shut off the engine or reduce engine speed while the assist regeneration is processing.

  Important: Allow the machine to complete the assist regeneration process before shutting off the engine.

  Note: The assist regeneration is finished processing when the icon disappears from the InfoCenter.

Reset Regeneration

Figure 39

Assist/reset-regeneration icon

• The assist/reset-regeneration icon displays in the InfoCenter (Figure 39).

• The computer takes control of the intake throttle and changes the fuel injection operation to increase the temperature of the engine exhaust.

  Important: The assist/reset-regeneration icon indicates that the exhaust temperature discharged from of your machine may be hotter than during regular operation.

• While operating the machine, run the engine at full engine speed when possible to promote DPF regeneration.

• The icon displays in the InfoCenter while the reset regeneration is processing.

• Whenever possible, do not shut off the engine or reduce engine speed while the reset regeneration is processing.

  Important: Allow the machine to complete the reset regeneration process before shutting off the engine.

  Note: The reset regeneration is finished processing when the icon disappears from the InfoCenter.

Parked Regeneration

Figure 40

Parked-regeneration request icon

• The parked-regeneration requested icon displays in the InfoCenter (Figure 40).

• If a parked regeneration is needed, the InfoCenter displays engine warning SPN 3719, FMI 16 (Figure 41) and the engine computer derates engine power to 85%.

  

  Figure 41

  Important: If you do not complete a parked regeneration within 2 hours, the engine computer derates engine power to 50%.

• A parked regeneration requires 30 to 60 minutes to complete.

• If you are authorized by your company, you need the PIN code to perform the parked-regeneration process.

Preparing to Perform a Parked or Recovery Regeneration

1. Ensure that the machine has at least 1/4 tank of fuel.

2. Move the machine outside to an area away from combustible materials.

3. Park the machine on a level surface.

4. Ensure that the traction control or motion-control levers are in the NEUTRAL position.

5. If applicable, lower the cutting units and shut them off.

6. Engage the parking brake.

7. Set the throttle to the low IDLE position.

Performing a Parked Regeneration

Note: For instructions on unlocking protected menus, refer to Accessing Protected Menus.

1. Access the protected menu and unlock the protected settings submenu (Figure 42); refer to Accessing Protected Menus.

   

   Figure 42

2. Navigate to the MAIN MENU, press the center button to scroll down to the SERVICE MENU, and press the right button to select the SERVICE option (Figure 43).

   Note: The InfoCenter should display the PIN indicator in the upper right corner of the display.

   

   Figure 43

3. In the SERVICE MENU, press the middle button until the DPF REGENERATION options displays, and press the right button to select the DPF REGENERATION option (Figure 44).

   

   Figure 44

4. When the “Initiate DPF Regen. Are you sure?” message displays, press the center button (Figure 45).

   

   Figure 45

5. If the coolant temperature is below 60°C (140°F) the “Insure is running and above 60C/140F” message displays. (Figure 46).

   Observe the temperature in the display, and run the machine at full throttle until the temperature reaches 60°C (140°F), then press the center button.

   Note: If the coolant temperature is above 60°C (140°F) this screen is skipped.

   

   Figure 46

6. Move the throttle control to LOW IDLE and press the center button (Figure 47).

   

   Figure 47

7. The following messages display as the parked regeneration process begins:

   1. The “Initiating DPF Regen.” message displays (Figure 48).

      

      Figure 48

   2. The “Waiting on ” message displays (Figure 49).

      

      Figure 49

   3. The computer determines whether the regeneration runs. One of the following messages displays in the InfoCenter:

      • If the regeneration is allowed, the “Regen Initiated. Allow up to 30 minutes for completion” message displays in the InfoCenter, wait for the machine to complete the parked regeneration process (Figure 50).

        

        Figure 50

      • If the regeneration process is not allowed by the engine computer, the “DPF Regen Not Allowed” message displays in the InfoCenter (Figure 51). Press the left button to exit to the home screen

        Important: If you did not meet all the requirements for regeneration or if less than 50 hours have passed since the last regeneration, the “DPF Regen Not Allowed” message appears.

        

        Figure 51

8. While the regeneration is running, the InfoCenter returns to the home screen and shows the following icons:

   		The engine is cold—wait.
   		The engine is warm—wait.
   		The engine hot—regeneration in progress (percent complete).

9. The parked regeneration is complete when the “Regen Complete” message displays in the InfoCenter. Press the left button to exit to the home screen (Figure 52).

   

   Figure 52

With Toro Smart Power™ traction, the operator does not have to listen to the engine speed in heavy conditions. Smart Power prevents bogging down in heavy turf by automatically controlling the machine speed and optimizing cutting performance. You can set a maximum ground speed that is comfortable and mow without having to manually reduce the traction speed when mowing in heavy conditions.

The fan speed is controlled by the hydraulic-fluid temperature and engine-coolant temperature. A reverse cycle is automatically initiated when either the engine coolant or hydraulic-fluid temperature reaches a certain point. This reversal helps blow debris off the rear screen and lower the engine and hydraulic-fluid temperatures. By simultaneously pressing the right and left buttons on the InfoCenter, the fan completes a manually-initiated reverse cycle. It is recommended to manually reverse the fan prior to leaving the work area, entering the shop, or storage area.

The machine is equipped with auto idle, which automatically idles the engine when all the following functions are not used, for a pre-determined time, previously set in the InfoCenter.

• The traction pedal is returned to the NEUTRAL position.

• The PTO is disengaged.

• None of the lift switches are activated.

  When you initiate any of the above functions, the machine automatically returns to the previous throttle position.

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

Note: Pressing either the brake pedal or moving the traction pedal into the reverse position, for 1 second, shuts off the cruise control.

The engine speed switch has 2 modes to change the engine speed. By momentarily tapping the switch, the engine speed can be increased or decreased in 100-rpm increments. By holding the switch down, the engine automatically moves to HIGH or LOW IDLE, depending on which side of the switch you press.

Supervisor (Protected Menu)

This feature allows the supervisor to set the maximum mowing speed, in increments of 50%, 75% or 100%, at which the operator can mow (low range).

Refer to Setting the Maximum Allowed Mow Speed for the procedure to set the mow speed.

Operator

This feature allows the operator to adjust the maximum mowing speed (low range), within the supervisors pre-adjusted settings. When in the InfoCenter splash or main screen, press the middle button ( icon) to adjust the speed.

Note: When switching between low and high ranges, the settings transfer based on the previous setting. The settings are reset when the machine is turned off.

Note: This feature may also be used in conjunction with cruise control.

Supervisor (Protected Menu)

This feature allows the supervisor to set the maximum transport speed, in increments of 50%, 75% or 100%, at which the operator can transport (high range).

Refer to Setting the Maximum Allowed Transport Speed for the procedure to set the transport speed.

Operator

This feature allows the operator to adjust the maximum transport speed (high range), within the supervisors pre-adjusted settings. When in the InfoCenter splash or main screen, press the middle button ( icon) to adjust the speed.

Note: When switching between low and high ranges, the settings transfer based on the previous setting. The settings are reset when the machine is turned off.

Note: This feature may also be used in conjunction with cruise control.

Practice driving the machine, because it has a hydrostatic transmission and its characteristics are different than many turf-maintenance machines. Some points to consider when operating the traction unit, mower deck, or other implements are that the transmission, engine speed, load on the mower blades or other implement components affect machine performance.

With Toro Smart Power™, the you do not need to listen to the engine speed in heavy conditions. Smart Power prevents bogging down in heavy turf by automatically controlling the machine speed and optimizing cutting performance.

You can use the brakes can to assist in turning the machine. However, use them carefully, especially on soft or wet grass, because the turf may be torn accidentally. Another benefit of the brakes is to maintain traction. For example, in some slope conditions, the uphill wheel slips and loses traction. If this situation occurs, press the uphill brake pedal gradually and intermittently until the uphill wheel stops slipping, which increases traction on the downhill wheel.

Traction Assist is automatic and requires no operator input. When a wheel starts to slip, flow is automatically split between the front and rear wheels to minimize wheel slip and loss of traction.

Use extra care when operating the machine on slopes. Ensure that the ROPS is in the raised position, the seat latch is properly secured, and the seat belt is buckled. Drive slowly and avoid sharp turns on slopes to prevent rollovers. For steering control, the mower deck must be lowered when going downhill.

Before shutting off the engine, disengage all controls and change the throttle to the SLOW position. Changing the throttle to the SLOW position reduces high-engine speed, noise, and vibration. Turn the key to the OFF position to shut off the engine.

Before transporting the machine, raise the mower decks and secure the transport latches (Figure 54).

Figure 54

1. Transport latch (wing mower decks)

In an emergency, the machine can be moved forward by actuating the bypass valve in the variable-displacement hydraulic pump and pushing or towing the machine.

Important: Do not push or tow the machine faster than 3 to 4.8 km/h (2 to 3 mph), because internal-transmission damage may occur. The bypass valves must be open whenever the machine is pushed or towed.

1. Raise the seat and locate the bypass valves, which are located below the front of the fuel tank (Figure 56).

   

   Figure 56

   1. Bypass valve

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

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

3. Close the bypass valves before starting the engine.

4. Torque to 70 N∙m (52 ft-lb) to close the valve.

Important: If you must push or tow the machine in reverse, bypass the check valve in the 4-wheel drive manifold. To bypass the check valve, connect a hose assembly that consists of a hose (Part No. 95-8843), 2 coupler fittings (Part No. 95-0985), and 2 hydraulic fittings (Part No. 340-77) to the reverse-traction, pressure-test port, located on the hydrostat, and to the port located between ports M8 and P2 on the rear traction manifold, located behind the front tire.

There are jacking points located at the front and rear of the machine.

• On the frame at the inside of each front drive tire

• At the center of the rear axle

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

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

• Bind the machine down securely to the trailer.

There are tie downs located at the front and rear sides of the machine (Figure 57).

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

• 2 on the front of the operator's platform

• Rear bumper

Figure 57

1. Rear tie-down point
2. Front tie-down points

1. Ensure that the PTO is disengaged.

2. Park the machine on a level surface.

3. Set the parking brake.

4. Lower the mower deck(s) if necessary.

5. Shut off the engine and wait for all moving parts to stop.

6. Turn the ignition key to the STOP position and remove it.

7. Allow machine components to cool before performing maintenance.

1. Close the rear window of the cab (Figure 59).

   

   Figure 59

2. Release the 2 latches at the forward lower corners of the hood (Figure 60).

   

   Figure 60

   1. Hood latch
   2. Handle
   3. Prop rod

3. Using the handles that are adjacent to the latches, lift up and back the hood until the 2 prop rods are seated in the 2 rod brackets (Figure 60).

1. Unlatch and raise the hood.

2. Remove the hairpin cotter securing the hood pivot to the mounting brackets (Figure 61).

   

   Figure 61

   1. Hairpin cotter

3. Slide the hood to the right side, lift the other side, and pull it out of the brackets.

Note: Reverse this procedure to install the hood.

The machine has grease fittings that you must lubricate regularly with No. 2 lithium grease. Also, lubricate the machine immediately after every washing.

The grease-fitting locations and quantities are:

Traction Unit

• 2 brake pedal pivot-shaft bearings (Figure 62)

• 2 front and rear-axle-pivot bushings (Figure 63)

• 2 steering-cylinder-ball joints (Figure 64)

• 2 tie-rod-ball joints (Figure 64)

• 2 king-pin bushings (Figure 64).

  Note: Lubricate only the top fitting on the king pin annually (2 pumps).

Figure 62

Figure 63

Figure 64

Center Mower Deck

Note: You may need to raise the deck to expose the grease fittings for the latch pivot and the lower link.

• 2 latch pivots (Figure 66)

  Note: You may need to manually trip the latches to gain access to the grease fittings (Figure 65). Use a pry bar to close and open the latch.

• 2 castor-fork-shaft bushings (Figure 67)

• 3 spindle-shaft bearings—located under the pulley (Figure 68)

• 2 idler-arm-pivot bushings (Figure 68)

Figure 65

1. Latch

Figure 66

Figure 67

Figure 68

Center-Deck-Lift Assemblies

• 2 (each side) lift-arm-cylinder bushings (Figure 69)

• 2 lift-arm ball joints (Figure 70)

Figure 69

Figure 70

Wing-Deck-Lift Assemblies

The 4 wing deck-lift cylinder (Figure 71)

Figure 71

Wing Mower Decks

• 1 caster-fork-shaft bushing (Figure 72)

• 2 (each side) spindle-shaft bearings—located under the pulley

• 1 idler-arm-pivot bushings—located on the idler arm

Figure 72

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

Service the air-cleaner filter only when the service indicator requires it (Figure 73). Changing the air filter before it is necessary only increases the chance of dirt entering the engine when you remove the filter.

Figure 73

1. Air-cleaner indicator

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

1. Replace the air cleaner (Figure 74).

   

   Figure 74

   Note: Do not clean the used element due to the possibility of damage to the filter media.

   Important: Never attempt to clean the safety filter (Figure 75). Replace the safety filter after every 3 primary filter services.

   

   Figure 75

   1. Air-cleaner safety filter

2. Reset the indicator (Figure 73) if it shows red.

• If advisory message displays in the InfoCenter, the DPF is nearing the recommended point for servicing the diesel-oxidation catalyst and the soot filter.

  

  Figure 78

• If engine faults , , or in the InfoCenter (Figure 79) display in the InfoCenter, clean the soot filter using the steps that follow:

  

  Figure 79

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

  2. Refer to your Authorized Toro Distributor for diesel-oxidation catalyst and the soot filter replacement parts or service.

  3. Contact your Authorized Toro Distributor to have them reset the engine ECU after you install a clean DPF.

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

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

1. Open the battery cover on the side of the shroud (Figure 81).

   Note: Press down on the flat surface above the battery cover to ease the removal of the cover (Figure 81).

   

   Figure 81

   

   Figure 82

   1. Battery cover
   2. Battery

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

   Warning

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

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

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

   Warning

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

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

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

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

4. Slide the rubber boot over the positive terminal.

5. Close the battery cover.

The traction unit fuses (Figure 83 thru Figure 85) are located under the power-center cover.

Remove the 2 Allen-head screws securing the power-center cover to the frame and remove the cover (Figure 83).

Figure 83

1. Power-center cover
2. Allen-head screws (2)

Figure 84

1. Fuses

Figure 85

The cab fuses (Figure 86 and Figure 87) are located in the fuse box in the cab headliner (Cab model only).

Figure 86

1. Cab fuse box
2. Fuses

Figure 87

1. Loosen the 2 nuts and bolts securing the left side of the traction pedal to the bracket (Figure 88).

   

   Figure 88

   1. Traction pedal
   2. Mounting nuts and bolts

2. Pivot the pedal to the desired operating angle and tighten the nuts (Figure 88)˙.

Use high quality SAE 85W-140 gear lube as a replacement.

1. With machine on level surface, position the wheel so 1 check plug is at the 12 o'clock position and the other is at 3 o'clock position (Figure 89).

   

   Figure 89

   1. Check/drain plug (2)

2. Remove the plug at the 3 o’clock position (Figure 89).

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

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

4. Install both plugs.

1. With the machine on a level surface, position a wheel so a check plug is at the lowest (6 o'clock) position (Figure 90).

   

   Figure 90

   1. Check/drain plug

2. Place a drain pan under the planetary hub, remove the plug, and allow the oil to drain.

3. Place a drain pan under the brake housing, remove the drain plug, and allow the oil to drain (Figure 91).

   

   Figure 91

   1. Drain plug
   2. Brake housing

4. When all of the oil has drained from both locations, install the plug in the brake housing.

5. Rotate the wheel until the open plug hole in the planetary is at the 12 o'clock position.

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

   Important: If the planetary fills before the 0.65 L (22 oz) of oil is added, wait 1 hour or install the plug and move the machine approximately 10 feet to distribute the oil through the brake system. Then, remove the plug and add the remaining oil.

7. Install the plug.

8. Repeat the procedure on the opposite planetary/brake assembly.

The rear axle is filled with SAE 85W-140 gear lube. Check the lubricant level before you first start the engine and as recommended. The capacity is 2.4 L (80 oz). Visually inspect for leaks daily.

1. Position the machine on a level surface.

2. Remove a check plug from the end of the axle and ensure that the lubricant is up to the bottom of the hole (Figure 92).

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

   

   Figure 92

   1. Check plug
   2. Fill plug

The gearbox is filled with SAE 85W-140 gear lube. The capacity is 0.5 L (16 oz). Visually inspect for leaks daily.

1. Position the machine on a level surface.

2. Remove the check/fill plug from the left side of the gearbox and ensure that lubricant is up to the bottom of the hole (Figure 93).

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

   

   Figure 93

   1. Gearbox
   2. Check/fill plug

1. Position the machine on a level surface.

2. Clean the area around the 3 drain plugs; 1 on each end and 1 in the center (Figure 94).

3. Remove the check plugs to ease in the draining of the oil.

4. Remove the drain plugs and allow the oil to drain into the pans.

   

   Figure 94

   1. Drain-plug location

5. Clean the area around the drain plug at the bottom of the gearbox (Figure 95).

6. Remove the drain plug from the gearbox and allow the oil to drain into a pan.

   Note: Remove the fill plug to ease in the draining of the oil.

   

   Figure 95

   1. Drain plug

7. Add enough oil to bring the level up to the bottom of the check plug holes; refer to Changing the Rear-Axle Lubricant, and Checking the Rear-Axle-Gearbox Lubricant.

8. Install the plugs.

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

   Note: The front measurement must be 6 mm (1/4 inch) less than the rear measurement.

2. To adjust, loosen the clamps at both ends of the tie rods.

3. Rotate the tie-rod end to move the front of the tire inward or outward.

4. Tighten the tie-rod clamps when the adjustment is correct.

1. Lower the wing mower decks to the ground.

2. Raise the front of the machine several inches off the ground and support it with jackstands.

3. Refer to Pivoting (Tilting) the Center Mower Deck to the Upright Position.

4. Pivot the mower deck forward so you can remove the tire.

Check the coolant level at the beginning of each day. The capacity of the system is 8.5 L (9 US qt).

1. Carefully remove the radiator cap and expansion-tank cap (Figure 96).

2. Check the coolant level in the radiator.

   Note: The radiator should be filled to the top of the filler neck and the expansion tank filled to the Full mark.

   

   Figure 96

   1. Expansion tank

3. If the coolant is low, add a 50/50 mixture of water and ethylene glycol anti-freeze.

   Important: Do not use water only or alcohol/methanol base coolants, as this may cause damage.

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

This machine is equipped with a hydraulically driven fan-drive system that automatically (or manually) reverses to reduce the radiator/oil cooler and screen debris buildup. While this feature can help reduce the time required to clean radiator/oil cooler, it does not eliminate the need for routine cleaning.

1. Shut off the engine and raise the hood.

2. Clean the engine area thoroughly of all debris.

3. Clean both sides of the radiator/oil cooler area thoroughly with compressed air (Figure 97).

   Note: Start from the fan side and blow the debris out toward the back. Then, clean from the back side and blow toward the front. Repeat this procedure several times until all chaff and debris is removed.

   Important: Cleaning the radiator/oil cooler with water can promote premature corrosion and damage to components.

   

   Figure 97

   1. Radiator/oil cooler

4. Close the hood.

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

1. Disengage the locking latch from the brake pedals so that both pedals work independently of each other.

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

   1. Loosen the 2 mounting screws and remove the brake-adjustment cover (Figure 98).

      

      Figure 98

      1. Mounting screws
      2. Brake-adjustment cover

   2. Loosen the front nut on the threaded end of the brake cable (Figure 99).

      

      Figure 99

      1. Brake-cable-adjusting nuts

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

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

   5. Install the brake-adjustment cover.

Proper tension allows 10 mm (3/8 inch) of deflection when a force of 44 N∙m (10 ft-lb) is applied on the belt midway between the pulleys.

If the deflection is not 10 mm (3/8 inch), loosen the alternator-mounting bolts (Figure 100).

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

Figure 100

1. Alternator
2. Mounting bolt
3. Compressor
4. Idler pulley

Cab model only

Check the condition and tension of the belt (Figure 100) after every 100 operating hours.

1. Proper tension will allow 10 mm (3/8 inch) deflection when a force of 44 N (10 lb) is applied on the belt midway between the pulleys.

2. If the deflection is not 10 mm (3/8 inch), loosen the idler pulley mounting bolt (Figure 100). Increase or decrease the compressor belt tension and tighten the bolt. Check the deflection of the belt again to ensure that the tension is correct.

When properly tensioned, the inside measurement of the extension spring (hook to hook) should be approximately 8.3 to 9.5 cm (3-1/4 to 3-3/4 inches). Once the correct spring tension is attained, adjust the stop bolt (carriage bolt) until there is approximately 2 to 5 mm (0.065 to 0.185 inch) clearance between the head of the bolt and the idler arm (Figure 101).

Note: Ensure that the belt is positioned on the spring side of the belt guide (Figure 101).

Figure 101

1. Belt
2. Eye bolt
3. Extension spring
4. Belt guide
5. Measurement (hook to hook)—approximately 8.3 to 9.5 cm (3-1/4 to 3-3/4 inches)
6. Flange nut
7. Stop bolt

The blade-drive belt, tensioned by the spring-loaded idler pulley, is very durable. However, after many hours of use, the belt will show signs of wear. Signs of a worn belt are: squealing when the belt is rotating, blades slipping when cutting grass, frayed edges, burn marks, and cracks. Replace the belt if any of these conditions are evident.

1. Lower the mower deck to the shop floor, remove the belt covers from the top of the mower deck, and set the covers aside.

2. Loosen the eye bolt (Figure 101).

3. Loosen the flange nut securing the stop bolt to the mounting tab and move the idler pulley away from the belt (Figure 101).

   Note: Loosen the nut enough to allow the idler arm to pass the stop bolt.

   Note: If you must remove the stop bolt from the mounting tab, install it in the hole that aligns the stop-bolt head with the idler arm.

4. Remove the bolts securing the hydraulic motor to the mower deck (Figure 102).

   

   Figure 102

   1. Hydraulic motor
   2. Mounting bolts

5. Lift the motor off the mower deck and lay it on top of the mower deck.

6. Remove the old belt from around the spindle pulleys and idler pulley.

7. Route the new belt around the spindle pulleys and idler-pulley assembly.

8. Position the hydraulic motor on the mower deck after routing the belt around the pulleys. Mount the motor to the mower deck with the bolts previously removed.

   Note: Ensure that the belt is positioned on the spring side of the belt guide (Figure 101).

9. Connect the extension spring (Figure 101) to the eye bolt and tension the belt as follows:

   • When properly tensioned, the inside measurement of the extension spring (hook to hook) should be approximately 8.3 to 9.5 cm (3-1/4 to 3-3/4 inch).

   • When you attain the correct spring tension, adjust the stop bolt (carriage bolt) until there is approximately 2 to 5 mm (0.065 to 0.185 inches) clearance between the head of the bolt and the idler arm.

The reservoir is filled at the factory with approximately 29 L (7.75 US 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:

Toro Premium All Season Hydraulic Fluid (Available in 19 L (5 gallon) pails or 208 L (55 gallon) drums. See the Parts Catalog or your Toro Distributor for part numbers).

Alternative fluids: If the Toro fluid is not available, other conventional, petroleum-based fluids may be used, provided they meet all of the following material properties and industry specifications. Check with your supplier to see whether the hydraulic fluid meets these specifications.

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.

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

The proper hydraulic fluids must be specified for mobile machinery (as opposed to industrial plant usage), multi-weight type, with ZnDTP or ZDDP anti-wear additive package (not an ashless-type fluid).

Toro Synthetic Biodegradable Hydraulic Fluid (Available in 19 L (5 US gallon) pails or 208 L (55 US gallon) drums. See the Parts Catalog or your Toro Distributor for part numbers)

This high quality synthetic, biodegradable fluid has been tested and found compatible for this Toro model. Other brands of synthetic fluid may have seal compatibility problems and Toro cannot assume responsibility for unauthorized substitutions.

Important: This synthetic fluid is not compatible with the Toro Biodegradable Fluid previously sold. See your Toro Distributor for more information.

Alternative biodegradable fluids:

Mobil EAL Envirosyn H 46 (US)

Mobil EAL Hydraulic Fluid 46 (International)

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 (0.67 fl oz) bottles. 1 bottle is sufficient for 15 to 22L (4 to 6 US gallons) of hydraulic fluid. Order Part No. 44-2500 from your Toro Distributor.

1. Position the machine on a level surface, lower the mower decks, shut off the engine, and remove the key.

2. Check the hydraulic-fluid level (Figure 103).

   

   Figure 103

1. Position the machine on a level surface, lower the mower decks, shut off the engine, and remove the key.

2. Remove the drain plug from the bottom, front of the reservoir and let the hydraulic fluid flow into a large drain pan.

3. Install and tighten the plug when the hydraulic fluid stops draining.

4. Fill the reservoir (Figure 104) with hydraulic fluid; refer to Checking the Hydraulic Fluid.

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

   

   Figure 104

   1. Hydraulic reservoir

5. Install the reservoir cap, start the engine, and use all of the hydraulic controls to distribute hydraulic fluid throughout the system.

6. Check for leaks; then shut off the engine.

7. Check the fluid level and add enough to raise level the level to the Full mark on the dipstick.

   Note: Do not overfill.

Use Toro replacement filters Part No. 94-2621 for the rear (mower deck) of the machine and Part No. 75-1310 for the front (charge) of the machine.

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

1. Position the machine on a level surface, lower the mower decks, shut off the engine, engage the parking brakes, and remove the ignition key.

2. Replace the hydraulic filters (Figure 105).

   

   Figure 105

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

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

You can use the counterbalance test port to test the pressure in the counterbalance circuit (Figure 106). The recommended counterbalance pressure is 2241 kPa (325 psi).

To adjust the counterbalance pressure, loosen the locknut, rotate the adjusting screw (Figure 106) clockwise to increase the pressure or counterclockwise to decrease the pressure, and tighten the locknut. You must run the engine and lower the deck in the float position to check the pressure.

Note: The caster wheels of all 3 mower decks should remain on the ground.

Figure 106

1. Counterbalance-adjusting screw
2. Counterbalance-test port

Note: Although not needed, you can pivot (tilt) the center mower deck.

1. Raise the center mower deck slightly off the floor, set the parking brake, and shut off the engine, and remove the ignition key.

2. Remove the hairpin cotter securing the dampers to lift arms (Figure 107).

   

   Figure 107

   1. Damper
   2. Hairpin cotter

3. Pivot the damper toward the deck housing.

4. Remove the hairpin cotter and clevis pin securing the height-of-cut chains to the rear of the mower deck (Figure 108).

   

   Figure 108

   1. U-bolt
   2. Height-of-cut chain

5. Start the engine and slowly raise the center mower deck.

6. Slowly raise each side cutting until the center of gravity shifts and the deck starts to rotate into the upright position.

7. Shut off the engine and remove the ignition key.

1. Slowly lower the wing mower decks until the center of gravity shifts and the center mower deck rotates downward.

2. Sit on the seat, start the engine, and lower the center mower deck until it is slightly off the floor.

3. Secure the height-of-cut chains to the rear of the mower deck.

4. Pivot the dampers upward into position and secure with a clevis pin and cotter pin.

1. Remove the locknut from the bolt holding the caster-wheel assembly between the caster fork (Figure 112) or the caster-pivot arm (Figure 113).

   Note: Grasp the caster wheel and slide the bolt out of the fork or pivot arm.

   

   Figure 112

   1. Caster bolt
   2. Caster fork
   3. Bearing
   4. Bearing spacer
   

   Figure 113

   1. Caster wheel
   2. Caster-pivot arm
   3. Bearing
   4. Bearing spacer

2. Remove the bearing from the wheel hub and allow the bearing spacer to fall out (Figure 112 and Figure 113).

3. Remove the bearing from the opposite side of the wheel hub.

4. Check the bearings, spacer, and inside of the wheel hub for wear and replace any damaged parts.

5. To assemble the caster wheel, push the bearing into the wheel hub.

   Note: When installing the bearings, press on the outer face of the bearing.

6. Slide the bearing spacer into the wheel hub and push the other bearing into the open end of the wheel hub to captivate the bearing spacer inside the wheel hub.

7. Install the caster-wheel assembly between the caster fork and secure it in place with the bolt and locknut.

The hinge cover prevents debris from escaping at hinge points between mower decks. If the cover(s) become damaged or worn, replace them.

Figure 114

After striking a foreign object, inspect the machine for damage and make repairs before starting and operating the equipment. Torque all of the spindle-pulley nuts to 176 to 203 N∙m (130 to 150 ft-lb).

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

   Note: Block the mower deck to prevent it from accidentally falling.

2. Rotate the blade until the ends face forward and backward and measure from the inside of the mower deck to the cutting edge at the front of the blade (Figure 115).

   Note: Remember this dimension.

   

   Figure 115

3. Rotate the opposite end of the blade forward and measure between the mower deck and cutting edge of the blade at the same position as in step 2.

   Note: The difference between the dimensions obtained in steps 2 and 3 must not exceed 3 mm (1/8 inch). If the dimension exceeds 3 mm (1/8 inch), the blade is bent and must be replaced; refer to Removing and Installing the Mower Blade(s).

The blade must be replaced if a solid object is hit, the blade is out of balance, or if the blade is bent. Always use genuine Toro replacement blades to ensure safety and optimum performance.

1. Raise the mower deck to the highest position, engage the parking brake, shut off the engine, and remove the ignition key.

   Note: Block the mower deck to prevent it from accidentally falling.

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

3. Remove the blade bolt, anti-scalp cup, and blade from the spindle shaft (Figure 116).

   

   Figure 116

   1. Blade bolt
   2. Anti-scalp cup

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

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

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

Both cutting edges and the sail, which is the turned-up portion opposite of the cutting edge, contribute to a good quality of cut. As the sail wears down, the quality of cut degrades, although the cutting edges are sharp. The cutting edge of the blade must be sharp so that the grass is cut rather than torn. The cutting edge is dull when the tips of the grass appear brown and shredded. Sharpen the cutting edges.

1. Position the machine on a level surface, raise the mower deck, set the parking brake, put the traction pedal in the NEUTRAL position, put the PTO lever in the OFF position, shut off the engine, and remove the ignition key.

2. Examine the cutting ends of the blade carefully, especially where the flat and curved parts of the blade meet (Figure 117).

   Note: Because sand and abrasive material can wear away the metal that connects the flat and curved parts of the blade, check the blade before using the mower. If you notice wear (Figure 117), replace the blade.

   

   Figure 117

   1. Cutting edge
   2. Curved area
   3. Wear/slot forming
   4. Crack

3. Examine the cutting edges of all the blades and sharpen the cutting edges if they are dull or nicked (Figure 118).

   Note: Sharpen only the top of the cutting edge and maintain the original cutting angle to ensure sharpness (Figure 118). The blade will remain balanced if you remove the same amount of metal from both cutting edges.

   

   Figure 118

   1. Sharpen at the original angle.

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

If there is mismatch between the blade, on a single mower deck, the grass will appear streaked when it is cut. you can correct this by ensuring that the blades are straight and all the blades are cutting on the same plane.

1. Park the machine on a level surface of the shop floor.

2. Raise the height of cut to the highest position; refer to Adjusting the Height-of-Cut.

3. Lower the mower deck onto the flat surface and remove the covers from the top of the mower deck.

4. Loosen the flange nut securing the idler pulley to release the belt tension.

5. Rotate the blades until the ends face forward and backward and measure from the floor to the front tip of the cutting edge.

   Note: Remember this dimension. Then rotate the same blade so that the opposite end is forward, and measure again. The difference between the dimensions must not exceed 3 mm (1/8 inch). If the dimension exceeds 3 mm (1/8 inch), replace the blade because it is bent. Make sure to measure all of the blades.

6. Compare the measurements of the outer blades with the center blade.

   Note: The center blade must not be more than 10 mm (3/8 inch) lower than the outer blades. If the center blade is more than 10 mm (3/8 inch) lower than the outer blades, proceed to step 7 and add shims between the spindle housing and the bottom of the mower deck.

7. Remove the bolts, flat washers, lock washers, and nuts from the outer spindle in the area where you must add the shims.

   Note: To raise or lower the blade, add a shim (Part No. 3256-24) between the spindle housing and the bottom of the mower deck. Continue to check the alignment of the blades and add shims until the tips of the blades are within the required dimension.

   Important: Do not use more than 3 shims at any 1 hole location. Use decreasing numbers of shims in adjacent holes if more than 1 shim is added to any 1 hole location.

8. Adjust the idler pulley and install the belt covers.

Important: Use care around cab seals and lights (Figure 119). If you are using a pressure washer, keep the washer wand at least 0.6 m (2 ft) away from the machine. Do not use pressure washer directly on cab seals and lights or under rear overhang.

Figure 119

1. Seal
2. Light
3. Keep wand 0.6 m (2 feet) away.
4. Do not pressure-wash under the rear overhang.

1. Remove the screws and grates from over both the in-cab and rear cab-air filters (Figure 120).

   

   Figure 120

   1. Filter
   2. Grate
   3. Screw
   

   Figure 121

   1. Filter
   2. Grate
   3. Screw

2. Clean the filters by blowing clean, oil free, compressed air through them.

   Important: If either filter has a hole, tear, or other damage, replace it.

3. Install the filters and grate, securing them with the thumbscrews.

1. Shut off the engine and remove the key.

2. Remove the 6 nuts and washers from the bottom of the rear of the cab (Figure 122).

   

   Figure 122

   1. Washer
   2. Nut

3. Remove the cabin roof of the cab by removing the 22 bolts that secure the roof (Figure 123).

   

   Figure 123

   1. Cabin roof
   2. Air filters
   3. Air-conditioning coils

4. Remove the air filters (Figure 123).

5. Remove and clean the air-conditioning coils (Figure 123).

6. Replace the air-conditioning coils, air filters and cabin roof.