Reelmaster® 5410-D and 5510-D Traction Unit

1. Remove the reel motors from the shipping brackets.

2. Remove and discard the shipping brackets.

3. At each cutting unit lift arm, remove the snapper pin that secures the cap to the lift arm pivot yoke, and remove the cap (Figure 4).

   

   Figure 4

   1. Snapper pin
   2. Cap

1. Remove the cutting units from the cartons.

2. Assemble and adjust as described in the cutting unit Operator's Manual.

3. Make sure that the counterweight (Figure 5) is installed at the proper end of the cutting unit as described in the cutting unit Operator's Manual.

   

   Figure 5

   1. Counterweight

Figure 6

1. Cutting unit 1
2. Cutting unit 2
3. Cutting unit 3
4. Cutting unit 4
5. Cutting unit 5
6. Reel motor
7. Weight

1. If the hairpin is installed in the rear hole of the compensation-spring rod—remove the hairpin and insert it in the hole next to the bracket (Figure 7).

   

   Figure 7

   1. Hairpin

2. Remove the 2 flange locknuts (3/8 inch) and 2 carriage bolts (3/8 x 1-1/4 inches) that secure the turf-compensator bracket to the cutting-unit frame (Figure 8).

   

   Figure 8

   1. Carriage bolt (3/8 x 1-1/4 inches)
   2. Turf-compensator bracket
   3. Flange locknut (3/8 inch)

3. Remove the flange locknut (3/8 inch) that secures the capscrew of the turf compensation spring to the right tab of the carrier frame, and remove the compensation spring from the cutting unit (Figure 9).

   Note: Do not remove the flange serrated nut from the capscrew.

   

   Figure 9

   1. Capscrew
   2. Right tab (Carrier frame)
   3. Flange locknut (3/8 inch)

4. Assemble the capscrew of the turf compensation spring to the right tab of the carrier frame (Figure 10) with the flange locknut (3/8 inch).

   

   Figure 10

   1. Flange locknut (3/8 inch)
   2. Right tab (Carrier frame)
   3. Capscrew

5. Align the studs of the left hose guide with the holes in the cutting-unit frame and the turf-compensator bracket (Figure 11).

   Note: The support loop of the hose guide aligns toward the centerline of the machine.

   

   Figure 11

   1. Turf-compensator bracket
   2. Flange locknut (3/8 inch)
   3. Stud (hose guide)
   4. Inboard

6. Assemble the hose guide and turf-compensator bracket to the cutting-unit frame with the 2 flange locknuts (3/8 inch).

7. Torque the locknuts and bolts to 37 to 45 N∙m (27 to 33 ft-lb).

Figure 12

1. Cutting unit 1
2. Cutting unit 2
3. Cutting unit 3
4. Cutting unit 4
5. Cutting unit 5
6. Reel motor
7. Weight

1. If the hairpin is installed in the rear hole of the compensation-spring rod—remove the hairpin and insert it in the hole next to the bracket (Figure 12).

   

   Figure 13

   1. Hairpin

2. Remove the 2 flange locknuts (3/8 inch) and 2 carriage bolts (3/8 x 1-1/4 inches) that secure the turf-compensator bracket to the cutting-unit frame (Figure 14).

   

   Figure 14

   1. Carriage bolt (3/8 x 1-1/4 inches)
   2. Turf-compensator bracket
   3. Flange locknut (3/8 inch)

3. Align the studs of the right hose guide with the holes in the cutting-unit frame and the turf-compensator bracket (Figure 15).

   Note: Ensure that the support loop of the hose guide aligns toward the centerline of the machine.

   

   Figure 15

   1. Stud (hose guide )
   2. Turf-compensator bracket
   3. Flange locknut (3/8 inch)
   4. Inboard

4. Assemble the hose guide and turf-compensator bracket to the cutting-unit frame with the 2 flange locknuts (3/8 inch).

5. Torque the locknuts to 37 to 45 N∙m (27 to 33 ft-lb).

Figure 16

1. Cutting unit 1
2. Cutting unit 2
3. Cutting unit 3
4. Cutting unit 4
5. Cutting unit 5
6. Reel motor
7. Weight

1. If the hairpin is installed in the rear hole of the compensation-spring rod—remove the hairpin and insert it in the hole next to the bracket (Figure 17).

   

   Figure 17

   1. Hairpin

2. Remove the 2 flange locknuts (3/8 inch) and 2 carriage bolts (3/8 x 1-1/4 inches) that secure the turf-compensator bracket to the cutting-unit frame (Figure 18).

   

   Figure 18

   1. Carriage bolt (3/8 x 1-1/4 inches)
   2. Turf-compensator bracket
   3. Flange locknut (3/8 inch)

3. Remove the flange locknut (3/8 inch) that secures the capscrew of the turf compensation spring to the right tab of the carrier frame, and remove the compensation spring from the cutting unit (Figure 19).

   Note: Do not remove the flange serrated nut from the capscrew.

   

   Figure 19

   1. Capscrew
   2. Right tab (Carrier frame)
   3. Flange locknut (3/8 inch)

4. Assemble the capscrew of the turf compensation spring to the right tab of the carrier frame (Figure 20) with the flange locknut (3/8 inch).

   

   Figure 20

   1. Flange locknut (3/8 inch)
   2. Right tab (Carrier frame)
   3. Capscrew

5. Align the holes in the turf-compensator bracket with the holes in the cutting-unit frame (Figure 21).

   Note: The support loop of the hose guide aligns toward the centerline of the machine.

   

   Figure 21

   1. Turf-compensator bracket
   2. Carriage bolt (3/8 x 1-1/4 inches)
   3. Flange locknut (3/8 inch)
   4. Inboard

6. Assemble the turf-compensator bracket to the cutting-unit frame with the 2 carriage bolts (3/8 x 1-1/4 inches) and 2 flange locknuts (3/8 inch).

7. Torque the locknuts and bolts to 37 to 45 N∙m (27 to 33 ft-lb).

For each cutting unit, secure the kickstand to the chain bracket with the snapper pin (Figure 22).

Figure 22

1. Chain bracket
2. Snapper pin
3. Cutting-unit kickstand

1. Slide a cutting unit under the lift arm (Figure 23).

   

   Figure 23

   1. Cap
   2. Snapper pin
   3. Pivot yoke
   4. Carrier frame shaft

2. Assemble the pivot yoke onto the carrier frame shaft.

3. Assemble the cap to the pivot yoke, and align the holes in the carrier frame shaft, pivot yoke, and cap.

4. Secure the cap and the carrier-frame shaft to the pivot yoke with the snapper pin.

5. Lock the cutting-unit pivot for cutting grass on a hill side; refer to Locking the Cutting-Unit Pivot for Cutting Grass on a Hill Side.

1. Slide a cutting unit under the lift arm (Figure 24).

   

   Figure 24

   1. Cap
   2. Snapper pin
   3. Pivot yoke
   4. Carrier frame shaft

2. Assemble the pivot yoke onto the carrier frame shaft.

3. Assemble the cap to the pivot yoke and align the holes in the carrier frame shaft, pivot yoke, and cap.

4. Secure the pivot arm shaft and cap to the carrier frame shaft with the snapper pin.

5. Lock the cutting-unit pivot for cutting grass on a hill side; refer to Locking the Cutting-Unit Pivot for Cutting Grass on a Hill Side.

6. Repeat steps 1 and 2 for the other rear cutting unit.

1. Remove the lynch pin and washer securing the pivot yoke to the lift arm and slide the shaft out of the lift arm (Figure 25).

   

   Figure 25

   1. Lynch pin
   2. Pivot yoke
   3. Lift arm (rear cutting unit)
   4. Washer

2. Assemble the pivot yoke onto the carrier frame shaft (Figure 26).

   

   Figure 26

   1. Cap
   2. Snapper pin
   3. Pivot yoke
   4. Carrier frame shaft

3. Assemble the cap to the pivot yoke, and align the holes in the carrier frame shaft, pivot yoke, and cap.

4. Secure the pivot yoke and cap to the carrier frame shaft with the snapper pin.

5. Lock the cutting-unit pivot for cutting grass on a hill side; refer to Locking the Cutting-Unit Pivot for Cutting Grass on a Hill Side.

6. Slide a cutting unit under the lift arm (Figure 27).

   

   Figure 27

   1. Lynch pin
   2. Lift-arm shaft
   3. Lift arm
   4. Washer

7. Insert the pivot yoke into the lift arm, and secure shaft to the arm with the lynch pin and washer.

8. Repeat steps 1 through 7 for the other rear cutting unit.

Lock the cutting-unit pivots to prevent the cutting units from rotating downhill when cutting across the face of a hill. Use the hole in the pivot yoke (Figure 28) lock the cutting unit. Use the slot for a steering cutting unit.

Figure 28

1. Snapper-pin positions
2. Hole (pivot yoke)
3. Slot (pivot yoke)

Secure the lift-arm chain to the chain bracket with the snapper pin (Figure 29).

Note: Use the number of chain links described in the cutting unit Operator's Manual.

Figure 29

1. Lift-arm chain
2. Chain bracket
3. Snapper pin

1. Coat the spline shaft of the reel motor with clean grease.

2. Oil the reel motor O-ring and install it onto the motor flange.

3. Install the motor by rotating it clockwise so that the motor flanges clear the bolts (Figure 30).

   

   Figure 30

   1. Reel-drive motor
   2. Mounting bolts

4. Rotate the motor counterclockwise until the flanges encircle the bolts, and then tighten the bolts.

   Important: Make sure that the reel motor hoses are not twisted, kinked, or at risk of being pinched.

5. Torque the mounting bolts to (27 to 33 ft-lb).

1. Use rubbing alcohol and a clean rag to clean the area of the hood next to the hood lock, and allow the hood to dry. (Figure 35).

   

   Figure 35

   1. CE decal
   2. Hood lock

2. Remove the backing from the CE decal.

3. Apply the decal to the hood.

1. Use rubbing alcohol and a clean rag to clean the floor bracket area next to the serial plate, and allow the bracket to dry (Figure 36).

   

   Figure 36

   1. Year of production decal
   2. Serial plate

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

3. Apply the decal to the floor bracket.

1. Use rubbing alcohol and a clean rag to clean the surface of warning decal, and allow the decal to dry (Figure 37).

   

   Figure 37

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

2. Remove the backing from the CE warning decal.

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

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

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

Pull the seat-position lever (Figure 44) to move the seat forward and rearward. Release the lever to lock the seat position.

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

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

The InfoCenter LCD display shows information about your machine, such as the operating status, various diagnostics, and other information about the machine (Figure 47). There is a splash screen and main information screen of the InfoCenter. You can switch between the splash screen and main information screen, at any time, by pressing any of the InfoCenter buttons and then selecting the appropriate directional arrow.

Figure 47

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 back out of any menu you are currently using.

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

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

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

	Hours remaining until service
	Reset the service hours
SERVICE DUE	Indicates when scheduled service should be performed
	Engine rpm/status—indicates the engine speed (rpm)
	Hour meter
	Info icon
	Fast
	Slow
	Fuel level
	Stationary regeneration is required.
	The glow plugs are active.
	Raise the cutting units.
	Lower the cutting units.
	Sit in the seat.
	Parking brake is On.
	The range is high (transport).
	Neutral
	The range is low (mow).
	Engine-coolant temperature (°C or °F)
	Temperature (hot)
	The PTO is engaged.
	Not allowed
	Start the engine.
	Shut off the engine.
	Engine
	Key switch
	The cutting units are lowering.
	The cutting units are raising.
	PIN code
	CAN bus
	InfoCenter
	Bad or failed
	Bulb
	Output of TEC controller or control wire in harness
	Switch
	Release the switch.
	Change to the indicated state.
	Warm-up mode
Symbols are often combined to form sentences. Some examples are shown below
	Put the machine into Neutral.
	Engine start is denied.
	Engine shutdown
	Engine coolant is too hot.
	Reset-standby regeneration request
	Parked or recovery regeneration request
	A parked or recovery regeneration is processing.
	High exhaust temperature
	NOx control diagnosis malfunction; drive the machine back to the shop and contact your authorized Toro distributor (software version U and later).
	DPF ash-accumulation notification—Refer to DPF Ash Accumulation for details.
	Sit down or engage the parking brake

Accessible only by entering PIN

To access the InfoCenter menu system, press the menu access button while at the main screen. This brings you to the main menu. Refer to the following tables for a synopsis of the options available from the menus:

Settings
Menu Item	Description
Units	Controls the units used on the InfoCenter. The menu choices are English or Metric
Language	Controls the language used on the InfoCenter*.
LCD Backlight	Controls the brightness of the LCD display.
LCD Contrast	Controls the contrast of the LCD display.
Front Backlap Reel Speed	Controls the speed of the front reels in backlap mode.
Rear Backlap Reel Speed	Controls the speed of the rear reels in backlap mode.
Protected Menus	Allows a person authorized by your company with the PIN code to access protected menus.
Protect Settings	Allows the ability to change the settings in the protected settings.
Acceleration	Low, Medium, and High settings control how quickly the traction speed reacts when you move the traction pedal.
Blade Count	Controls the number of blades on the reel for reel speed.
Mow Speed	Controls the maximum speed while in mow (low range)
Trans. Speed	Controls the maximum speed while in transport (high range)
Smart Power	Turns Smart Power on and off
Economy Mode	When activated, the Economy Mode lowers the engine speed while mowing to reduce noise and fuel consumption. The reel speed does not change, but the mow speed is decreased if the mow stop is not adjusted accordingly.
Height of cut (HOC)	Controls the height of cut (HOC) for determining the reel speed.
F Reel RPM	Displays the calculated reel speed position for the front reels. The reels can also be manually adjusted.
R Reel RPM	Displays the calculated reel speed position for the rear reels. The reels can also be manually adjusted.

Protected under Protected Menus—accessible only by entering PIN

There are operating configuration settings that are adjustable within the Settings Menu of the InfoCenter. To lock these settings, use the Protected Menu.

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

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

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

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

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

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

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

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

Transport Reverse Speed

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

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

Mowing Reverse Speed

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

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

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

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

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

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

• This machine has an automotive-style throttle that is controlled by the traction pedal.

• This machine does not have a separate throttle switch or throttle lever.

• When you remove your foot from the traction pedal, the machine dynamically brakes to a stop.

• The pedal controls are optimized to provide a reactive yet stable response, allowing you to maintain consistent control over rough terrain, while still allowing for quick, smooth braking.

• While transporting, the traction pedal will operate similar to a car and change the engine and traction speed dependent on the traction pedal position.

• When mowing, the engine speed will automatically raise to high idle.

• If the engine is at low idle, performing a function like lifting the cutting units or pressing the traction pedal raises the engine speed to a minimum working speed, providing enough power to efficiently perform the function.

• The maximum speeds set in the PIN protected menu settings are set by the supervisor to limit the machine’s maximum traction speed.

• The achievable traction pedal use, cruise control, and pedal stop traction speeds are all limited by the maximum speeds set in the PIN protected menu.

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

• When transporting the machine between work areas, shut off the PTO, and raise the cutting units to the fully upward position. This allows the traction pedal to operate like a car.

• Always drive slowly in rough areas.

• Never shut off the machine while driving the machine.

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

• This machine has an automotive-style throttle —the engine speed and the machine speed respond to the pedal movement.

• While transporting, the traction pedal will operate similar to a car and change the engine and traction speed dependent on the traction pedal position.

• While mowing, the engine automatically raises to high idle to optimize mowing performance, and the traction pedal only controls traction speed.

• The further you push the pedal forward or reverse, the faster the machine moves.

• To control the machine to a smooth stop while transporting or mowing, use your foot to return the traction pedal to neutral at your desired rate.

• To engage maximum braking, remove your foot from the traction pedal, allowing it to return to neutral. The machine dynamically brakes to a stop.

This traction system allows you to customize the acceleration settings for operator comfort and course conditions. Refer to Accessing Protected Menus for changing the settings.

Figure 50

1. Traction pedal

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

To temporarily set the maximum speed of the machine, press the traction pedal fully forward (Figure 50). You can set a separate speed for the mow range and transport range (Figure 51).

• To access this feature, select the InfoCenter middle button from the main screen (Figure 51).

  Note: This feature reverts back to the supervisor maximum speed settings when the key is switched off.

  

  Figure 51

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

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

Whenever the max traction speed is changed via the supervisor max speed settings or Virtual Pedal Stop, the traction pedal is automatically reprogrammed to use the full pedal stroke between neutral and the new max speed. This means the operator gains more precise control of the traction speed at lower maximum speed settings.

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

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

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

• Low—least aggressive acceleration and deceleration

• Medium (default)—medium acceleration and deceleration

• High—most aggressive acceleration and deceleration

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

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

With Smart Power, the operator does not have to listen to the engine speed in heavy load conditions. Smart Power prevents the engine from bogging down in heavy cutting conditions by automatically controlling the machine speed and optimizing cutting performance.

Note: By default, the Smart Power feature is ON.

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

1. Sit on the seat, keep your foot off the traction pedal so that it is in NEUTRAL, engage the parking brake, and ensure that the PTO switch is not engaged.

2. Turn the key to the ON/PREHEAT position.

   An automatic timer controls the glow plug preheat for 6 seconds.

3. After preheating the glow plugs, turn the key to the START position.

   Crank the engine for no longer than 15 seconds. Release the key when the engine starts. If additional preheating is required, turn the key to the OFF position and then to the ON/PREHEAT position. Repeat this process as required.

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

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

2. Turn the key to the OFF position and remove it from the switch.

1. Disengage the parking brake, disengage the PTO, and raise the cutting units.

2. Drive the machine to the mowing area.

3. Park the machine approximately 6 m (20 ft) off the fairway, facing the intended mowing direction.

4. Lower the cutting units completely with the lift/lower control lever.

5. Engage the PTO.

   Note: The cutting units will not start.

   Note: The engine speed automatically rises to high idle when you lower the cutting units and activate the PTO switch.

6. Tap the lift/lower control lever rearward to lift the cutting units to the turnaround position.

   Note: Tapping the lift/lower control lever without holding it raises the cutting units to the turnaround position and stops the rotation of the reels until the cutting units are lowered.

7. Using the traction pedal, approach the mowing area slowly.

8. Once you reach the edge of the mowing area to start mowing, lower the cutting units with the lift/lower control lever.

   Note: Practice to ensure the cutting units do not lower early or mow an unintended area.

9. Complete the mowing pass.

10. When nearing the opposite edge of the fairway (prior to reaching the edge of the mowing area), tap the lift/lower control lever rearward to lift the cutting units to the turnaround position.

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

12. Press the lift/lower control lever to automatically lower the cutting units from the turnaround position and continue mowing.

13. After mowing the desired area, follow the perimeter of the area to complete the cleanup mow pass. This will ensure that all of the turf along the edge of the fairway where the cutting units were being lifted and lowered is uniformly cut.

    Note: Use the Virtual Pedal Stop (VPS) to temporarily set a lower max speed to improve operating control while completing the cleanup pass; refer to Using the Virtual Pedal Stop (VPS) Feature.

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 in the DPF is too high or a reset regeneration has not occurred for 100 hours, the engine computer signals you through the InfoCenter when reset regeneration is running.

• Allow the 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 (full throttle) engine speed generally produces adequate exhaust temperature for DPF regeneration.

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

DPF Soot Accumulation

• Over time, the diesel particulate filter 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 DPF.

• 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 54 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 or Recovery Regeneration.
Level 2: Engine Warning	Figure 55 Check EngineSPN 3719, FMI 0	The computer de-rates the engine power to 50%.	Perform a recovery regeneration as soon as possible; refer to Parked or 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 an engine fault to indicate the accumulation of ash in the DPF.

• The fault messages indicate 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	Fault Code	Engine Speed Reduction	Engine Power Rating	Recommended Action
Level 1: Engine Warning	Figure 56 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 2: Engine Warning	Figure 57 Check EngineSPN 3720, FMI 16	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 3: Engine Warning	Figure 58 Check EngineSPN 3251, FMI 0	Engine speed at maximum 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 that cause 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 because of low-engine speed, low-engine load, or after the computer detects the DPF is becoming obstructed with soot	• The InfoCenter does not display an icon indicating assist regeneration.
		• During assist regeneration, the engine computer adjusts the engine settings to raise the exhaust temperature.
		Refer to Assist DPF Regeneration.
Reset	Occurs every 100 hours	• When the high exhaust-temperature icon is displayed in the InfoCenter, a regeneration is in progress.
	Also occurs after assist regeneration only if the computer detects that assist regeneration did not sufficiently reduce the soot level
		• During reset regeneration, the engine computer adjusts the engine settings to raise the exhaust temperature.
		Refer to Reset Regeneration.

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

Type of Regeneration	Conditions that cause DPF regeneration	DPF description of operation
Parked	Occurs because the computer detects back pressure in the DPF due to soot buildup	• When the reset-standby/parked or recovery regeneration icon or ADVISORY #188 displays in the InfoCenter, a regeneration is requested.
	Also occurs because the operator initiates a parked regeneration
	May occur because you set the InfoCenter to inhibit reset regeneration and continued operating the machine, adding more soot when the DPF already needs a reset regeneration	• Perform the parked regeneration as soon as possible to avoid needing a recovery regeneration.
	May result from using the incorrect fuel or engine oil	• A parked regeneration requires 30 to 60 minutes to complete.
		• You must have at least a 1/4 tank of fuel in the tank.
		• You must park the machine to perform a parked regeneration.
		Refer to Parked or Recovery Regeneration.
Recovery	Occurs because the operator ignored requests for a parked regeneration and continued operating the machine, adding more soot to the DPF	• When the reset-standby/parked or recovery regeneration icon or ADVISORY #190 displays in the InfoCenter, a recovery regeneration is requested.
		• A recovery regeneration requires up to 3 hours to complete.
		• You must have at least a 1/2 tank of fuel in the machine.
		• You must park the machine to perform a recovery regeneration.
		Refer to Parked or Recovery Regeneration.

Accessing the DPF Regeneration Menus

Accessing the DPF Regeneration Menus

1. Access the Service menu, press the center button to scroll down to the DPF REGENERATION option (Figure 59).

   

   Figure 59

2. Press the right button to select the DPF Regeneration entry (Figure 59).

Time Since Last Regeneration

Access the DPF Regeneration menu, press the center button to scroll down to the LAST REGEN field (Figure 60).

Use the LAST REGEN field to determine how many hours you have run the engine since the last reset, parked, or recovery regeneration.

Figure 60

Technician Menu

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

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

Access the DPF Regeneration menu, press the center button to scroll down to the TECHNICIAN option, and press the right button to select the Technician entry (Figure 61).

Figure 61

• Use the DPF operation table to understand the current state of DPF operation (Figure 62).

  

  Figure 62

  .

  DPF Operation Table

  State	Description
  Normal	The DPF is in normal-operating mode—passive regeneration.
  Assist Regen	The engine computer is performing an assist regeneration.
  Reset Stby	The engine computer is trying to run a reset regeneration, but 1 of the following conditions prevents regeneration:	The regen inhibit setting is set to ON.
  		The exhaust temperature is too low for regeneration.
  Reset Regen	The engine computer is running a reset regeneration.
  Parked Stby	The engine computer is requesting that you run a parked regeneration.
  Parked Regen	You initiated a parked regeneration request and the engine computer is processing the regeneration.
  Recov. Stby	The engine computer is requesting that you run a recovery regeneration.
  Recov. Regen	You initiated a recovery regeneration request and the engine computer is processing the regeneration.

• View the soot load which is measured as the percentage of soot in the DPF (Figure 63); refer to the soot-load table.

  Note: The soot load value varies as the machine is operated and DPF regeneration occurs.

  

  Figure 63

  Soot-Load Table

  Important Soot Load Values	Regeneration State
  0% to 5%	Minimum soot load range
  78%	The engine computer performs an assist regeneration.
  100%	The engine computer automatically requests a parked regeneration.
  122%	The engine computer automatically requests a recovery regeneration.

Reset Regeneration

Caution

The exhaust temperature is hot (approximately 600°C (1,112°F) during DPF regeneration. Hot exhaust gas can harm you or other people.

• Never operate the engine in an enclosed area.

• Make sure that there are no flammable materials around the exhaust system.

• Never touch a hot exhaust system component.

• Never stand near or around the exhaust pipe of the machine.

Figure 64

• The high exhaust-temperature icon displays in the InfoCenter (Figure 64).

• The engine computer adjusts engine settings to raise the exhaust temperature.

  Important: The high exhaust-temperature 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 and high load 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: Whenever possible, allow the machine to complete the reset regeneration process before shutting off the engine.

Periodic Reset Regeneration

If the engine has not completed a successful Reset, Parked, or Recovery regeneration in the previous 100 hours of engine operation, the engine computer will attempt to perform a reset regeneration.

Setting the Inhibit Regen

Reset Regeneration Only

Note: If you set the InfoCenter to inhibit regeneration, the InfoCenter displays ADVISORY #185 (Figure 65) every 15 minutes while the engine requests a reset regeneration.

Figure 65

A reset regeneration produces the elevated engine exhaust. If you are operating the machine around trees, brush, tall grass, or other temperature-sensitive plants or materials, you can use the Inhibit Regen setting to prevent the engine computer from performing a reset regeneration.

Important: When you shut off the engine and start it again, the inhibit regen setting defaults to OFF.

1. Access the DPF Regeneration menu, press the center button to scroll down to the INHIBIT REGEN option, and press the right button to select the Inhibit Regen entry (Figure 66).

   

   Figure 66

2. Press the right button to change the inhibit regeneration setting from On to Off (Figure 66) or from Off to On (Figure 67).

   

   Figure 67

Allowing a Reset Regeneration

The InfoCenter displays the high exhaust-temperature icon when the reset regeneration is in process.

Note: If INHIBIT REGEN is set to ON, the InfoCenter displays ADVISORY #185 (Figure 68). Press button 3 to set inhibit regeneration setting to OFF and continue with the reset regeneration.

Figure 68

Note: If the engine exhaust temperature is too low, the InfoCenter displays ADVISORY #186 (Figure 69) to inform you to set the engine to full throttle (high idle).

Figure 69

Note: When the reset regeneration completes, the high exhaust-temperature disappears from the InfoCenter screen.

The turf-compensation spring transfers weight from the front to the rear roller (Figure 90). This helps to reduce a wave pattern in the turf, also known as marcelling or bobbing.

Important: Make spring adjustments with the cutting unit mounted to the traction unit, pointing straight ahead and lowered to the ground.

1. Make sure that the hairpin cotter is installed in the rear hole in the spring rod (Figure 90).

   

   Figure 90

   1. Turf-compensation spring
   2. Hairpin cotter
   3. Spring rod
   4. Hex nuts

2. Tighten the hex nuts on the front end of the spring rod until the compressed length of the spring is 12.7 cm (5 inches) for 5-inch cutting units or 15.9 cm (6.25 inches) for 7-inch cutting units (Figure 90).

   Note: When operating on rough terrain, decrease the spring length by 12.7 mm (1/2 inch). This slightly decreases the ground following.

You can adjust the amount of counterbalance force applied to the rear cutting-units to help compensate for different turf conditions, and to maintain a uniform height of cut in rough conditions or in areas of thatch buildup.

You can adjust counterbalance force of each torsion spring to 1 of 4 settings. Each increment increases or decreases the counterbalance force on the cutting unit by 2.3 kg (5 lb). You can position the springs at the back side of the first spring actuator to remove all counterbalance (fourth position).

Note: To remove all counterbalance force, position the long leg of the torsion spring above the shouldered stud.

1. Park the machine on a level surface, lower the cutting units, shut off the engine, engage the parking brake, and remove the key.

2. Insert the long end of the counterbalance spring into a tube or similar object, and pivot the spring around the shouldered stud to the desired position (Figure 91).

   

   Figure 91

   1. Spring
   2. Shouldered stud

3. Repeat steps 1 and 2 at the other counterbalance spring.

1. Park the machine on a level surface, lower the cutting units, shut off the engine, engage the parking brake, and remove the key.

2. The lift-arm switch is located underneath the hydraulic tank and inboard of the cutting unit #5 lift arm (Figure 29).

   

   Figure 92

3. Loosen the jam nut that secures lift-arm switch to the switch plate (Figure 93).

   

   Figure 93

   1. Switch
   2. Lift-arm sensing device

4. Adjust the lift-arm switch as follows:

   • To increase the lift-arm turnaround height, move the switch down.

   • To decrease the lift-arm turnaround height, move the switch up.

   Important: Maintain an air gap of 1.0 to 2.5 mm (0.040 to 0.100 inches) between the switch and the lift-arm trigger. The LED light on the switch verifies proper function of the switch.

5. Tighten the jam nuts to 20 N∙m +/- 2 N∙m (15 +/- 1.5 ft-lb).

   Important: Do not overtighten the jam nuts; otherwise, you may damage the sensor.

Important: It is important that proper reel speeds are used for your mowing application.Reel speeds that are too slow may result in a wave pattern in the turf, also known as clip marks, marcelling, or bobbing. If this is observed, try increasing the reel speeds or reducing the mowing speed.Reel speeds that are too fast may result in turf damage and/or premature wear of the reels, bedknives, and other mechanical components.

Refer to Setting the Front and Rear Reel Speeds.

To adjust the reel speed manually, refer to the following:

1. In the InfoCenter, under the settings menu, enter the blade count, mow speed, and HOC to calculate the proper reel speed.

2. If further adjustments are required, in the settings menu, scroll down to the F Reel RPM, R Reel RPM, or both.

3. Press the right button to change the reel-speed value. As the speed setting is changed, the display continues to show the calculated reel speed based on blade count, mow speed, and HOC, but the new value is also displayed.

   Note: You may need to increase or decrease the reel speed to compensate for varying turf conditions.

Figure 94

5 inch (127 mm) Reel Speed Chart

Figure 95

7 inch (178 mm) Reel Speed Chart

The machine is equipped with a diagnostic light, which indicates if the machine detects a malfunction. The diagnostic light is located on the InfoCenter, above the display screen (Figure 96). When the machine is functioning properly and the key switch is moved to the ON/RUN position, the diagnostic light turns on briefly to indicate that the light is working properly. When a machine advisory message appears, the light illuminates when the message is present. When a fault message appears, the light blinks until the fault is resolved.

Figure 96

1. Diagnostic light

• Front of the machine—the hole in the rectangular pad, under the axle tube, inside each front tire (Figure 97).

  

  Figure 97

  1. Front tie-down

• Rear of the machine—each side of the machine on the rear frame(Figure 98).

  

  Figure 98

  1. Rear tie-down

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

• Tie the machine down securely.

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

Important: Do not push or tow the machine faster than 3 to 4.8 km/h (2 to 3 mph). If you push or tow at a faster speed, internal transmission damage may occur.The bypass valves must be open and the brake released whenever you push or tow the machine.

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

2. Locate the bypass valve under the seat and on the top of the hydrostat (Figure 99).

   

   Figure 99

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

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

4. Locate the brake release manifold near the front right tire and behind the hydraulic tank (Figure 100).

   

   Figure 100

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

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

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

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

6. Push or tow the machine.

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

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

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

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

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

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

3. Wait for the engine to cool.

1. Release the 2 hood latches (Figure 101).

   

   Figure 101

   1. Hood latch (2)

2. Rotate open the hood.

1. Carefully rotate the hood closed (Figure 102).

   

   Figure 102

   1. Hood latch (2)

2. Secure the hood with the 2 hood latches.

1. Remove the ball pin from the screen latch (Figure 103).

   

   Figure 103

   1. Ball pin
   2. Screen latch

2. Unlatch and open the screen.

1. Close and latch the screen (Figure 104).

   

   Figure 104

   1. Ball pin
   2. Screen latch

2. Insert the ball pin through the screen latch.

1. Unlatch the seat base (A of Figure 105).

2. Tilt the seat and base open (B of Figure 105).

3. Support it with the prop rods (C of Figure 105).

   

   Figure 105

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

2. Carefully lower the seat until it latches securely.

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

Use the following as machine-lift points:

Figure 106

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

• Front—the jack brackets of the front-axle tube (Figure 106).

• Rear—the rear-axle tube.

Lubricate all grease fittings for the bearings and bushings with No. 2 lithium grease.

The grease fitting locations and quantities are as follows:

• Pump driveshaft (3) (Figure 107)

  

  Figure 107

• Cutting-unit lift-arm cylinders (2 each) (Figure 108)

  

  Figure 108

• Lift-arm pivots (1 each) (Figure 108)

• Cutting-unit carrier-frame and pivot (2 each) (Figure 109)

  

  Figure 109

• Lift-arm-pivot shaft (1 each) (Figure 110)

  

  Figure 110

• Axle-steering pivot (1) (Figure 111)

  

  Figure 111

• Steering-cylinder ball joints (2) (Figure 112)

  

  Figure 112

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Open the hood; refer to Opening the Hood.

3. Check the service indicator at the end of the air filter housing (Figure 113).

   

   Figure 113

   1. Service indicator

4. If a red band displays in the service indicator, change the air filter; refer to Servicing the Air Cleaner.

5. Squeeze the dust-ejector valve (Figure 114).

   

   Figure 114

6. Close and latch the hood; refer to Closing the Hood.

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. Changing the air filter before it is necessary only increases the chance of dirt entering the engine when you remove the filter.

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

Figure 115

1. If a red band displays in the service indicator, press the reset button at the end of the indicator (Figure 116).

   

   Figure 116

2. Close and latch the hood; refer to Closing the Hood.

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

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

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

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

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

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

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

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

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

• Ensure that your fuel comes from a quality supplier.

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

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

1. Open the hood; refer to Opening the Hood.

2. Clean the area around the fuel-filter head (Figure 121).

   

   Figure 121

   1. Fuel-filter head
   2. Fuel filter

3. Remove the filter and clean the filter-head mounting surface (Figure 121).

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

4. Lubricate the filter gasket with clean lubricating engine oil; refer to the engine owner's manual for additional information.

5. Install the dry filter canister by hand until the gasket contacts the filter head, then rotate it an additional 1/2 turn.

6. Start the engine and check for fuel leaks around the filter and filter head.

   Repair all fuel leaks.

7. Shut off the engine and remove the key.

8. Close and latch the hood; refer to Closing the Hood.

In addition to the listed service interval, drain and clean the tank if the fuel system becomes contaminated or if you are storing the machine for an extended period. Use clean fuel to flush out the tank.

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

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

Replace any deteriorated clamps or hoses.

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

If engine faults , , or display in the InfoCenter (Figure 122), clean the soot filter using the steps that follow:

Figure 122

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 reset the engine ECU after you install a clean DPF.

Prime the fuel system after the following scenarios:

• Replacing the fuel filter.

• Draining the water separator after each use or daily.

• Running out of fuel.

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

To prime the fuel system, perform the following steps:

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

1. Ensure that fuel is in the fuel tank.

2. Perform the following steps to prime the filter and the lines to the high-pressure pump to prevent wear or damage to the pump:

   1. Cycle the key to the ON position for 15 to 20 seconds.

   2. Cycle the key to the OFF position for 30 to 40 seconds.

      Note: This allows the ECU to power down.

   3. Cycle the key to the ON position for 15 to 20 seconds.

   4. Inspect for leaks around the filter and hoses.

   5. Start the engine and inspect for leaks.

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Open the screen; refer to Opening the Screen.

3. Press the sides of the battery cover, and remove the cover from the battery tray (Figure 132).

   

   Figure 132

   1. Tab (battery cover)
   2. Negative battery cable
   3. Insulator cover (positive battery cable)
   4. Slot (battery tray)

4. Disconnect the negative battery cable.

5. Slide the insulator cover off the positive battery-cable clamp, and disconnect the positive battery cable.

1. Install the positive battery cable (red) to the positive (+) battery post (Figure 133).

   

   Figure 133

   1. Tab (battery cover)
   2. Negative battery cable
   3. Insulator cover (positive battery cable)
   4. Slot (battery tray)

2. Install the negative battery cable (black) to the negative (-) battery post.

3. Apply a coat of Grafo 112X (skin-over) grease, Toro Part No. 505-47 to the battery posts and battery-cable clamps.

4. Slide the rubber boot over the positive battery-cable clamp.

5. Assemble the cover over the battery, inserting the tabs of the cover into the slots in the battery tray.

6. Close and latch the screen; refer to Closing the Screen.

1. Disconnect the battery; refer to Disconnecting the 12 V Battery.

2. Connect a 3 to 4 A battery charger to the battery posts.

3. Charge the battery at a rate of 3 to 4 A for 4 to 8 hours.

4. When the battery is charged, disconnect the charger from the electrical outlet and battery posts.

5. Connect the battery; refer to Connecting the 12 V Battery.

Note: Keep the terminals and the entire battery case clean because a dirty battery will discharge slowly.

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Open the screen; refer to Opening the Screen.

3. Check the condition of the battery.

   Note: Replace a worn or damaged battery.

4. Disconnect the battery cables, and remove the battery from the machine; refer to Disconnecting the 12 V Battery.

5. Clean the entire battery case with a solution of sodium bicarbonate (baking soda) and water.

6. Rinse the case with clean water.

7. Assemble the battery to the machine and connect the battery cables; refer to Connecting the 12 V Battery.

8. Close and latch the screen; refer to Closing the Screen.

The fuse block is under the seat.

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Unlatch the seat base, tilt the seat base open, and support it with the prop rods (Figure 134).

   

   Figure 134

3. Replace the open fuse (Figure 135) with the same fuse type and amperage rating.

   

   Figure 135

   1. Fuse block

4. Rotate the seat and seat base closed and latch the base (Figure 136).

   

   Figure 136

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Unlatch and open the hood; refer to Opening the Hood.

3. At the rear, right side of the engine, remove the cover of the in-line fuse holder.

   

   Figure 137

   1. TEC fuse

4. Replace the open fuse with a fuse of the same type and amperage rating.

5. Assemble the cap to the in-line fuse holder.

6. Close and latch the hood; refer to Closing the Hood.

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Unlatch and open the hood; refer to Opening the Hood.

3. At the rear, right side of the engine, remove the cover of the in-line fuse holder.

   

   Figure 138

   1. ECU fuse

4. Replace the open fuse with a fuse of the same type and amperage rating.

5. Assemble the cap to the in-line fuse holder.

6. Close and latch the hood; refer to Closing the Hood.

Important: Maintain the recommended pressure in all tires to ensure a good quality of cut and proper machine performance. Do not underinflate the tires.

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Measure the tire air pressure.

   Note: The correct air pressure in the tires is 83 to 103 kPa (12 to 15 psi).

3. If needed add air to or remove air from the tire.

4. Repeat steps 2 and 3 at the other tires.

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Torque the wheel nuts to 94 to 122 N∙m (70 to 90 ft-lb).

1. Rotate the steering wheel to position the rear wheels straight ahead.

2. Prepare the machine for maintenance; refer to Preparing for Maintenance.

3. At axle height, measure the center-to-center distance at the front and rear of the steering tires.

   Note: The rear wheel toe-in adjustment is correct if the difference between the front wheel measurement and the rear wheel measurement is 6 mm (1/4 inch) or less. (Figure 139).

   

   Figure 139

   1. Front of the traction unit
   2. 6 mm (1/4 inch) or less than the rear of the tire
   3. Center-to-center distance

4. If the measurement is greater than 6 mm (1/4 inch), adjust the rear wheel toe-in; refer to Adjusting the Rear Wheel Toe-in.

1. Loosen the jam nut on each end of the tie rod (Figure 140).

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

   

   Figure 140

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

2. Using the wrench flat to rotate the tie rod.

3. At axle height, measure the center-to-center distance at the front and rear of the steering tires.

   Note: The rear wheel toe-in adjustment is correct if the difference between the front wheel measurement and the rear wheel measurement is 6 mm (1/4 inch) or less.

4. Repeat steps 2 and 3 as required.

5. Tighten the jam nuts.

The coolant reservoir is filled at the factory with a 50/50 solution of water and ethylene glycol base extended-life coolant.

Important: Use only commercially available coolants that meet the specifications listed in the Extended Life Coolant Standards Table.Do not use conventional (green) inorganic-acid technology (IAT) coolant in your machine. Do not mix conventional coolant with extended-life coolant.

Coolant Type Table

Extended Life Coolant Standards

Important: Coolant concentration should be a 50/50 mixture of coolant to water.

• Preferred: When mixing coolant from a concentrate, mix it with distilled water.

• Preferred option: If distilled water is not available, use a pre-mix coolant instead of a concentrate.

• Minimum requirement: If distilled water and pre-mix coolant are not available, mix concentrated coolant with clean drinkable water.

Coolant Capacity: 6.6 L (7.0 US qt

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Open the hood; refer to Opening the Hood.

3. Check the level of coolant in the reservoir (Figure 141).

   Note: The coolant level is correct if it is cold mark on the side of the tank when the engine is cold, and the hot mark when the engine is hot.

   

   Figure 141

   1. Cap (coolant reservoir)
   2. Hot engine-coolant mark
   3. Cold engine-coolant mark

4. If the coolant level is low, remove the coolant-reservoir cap and add the specified coolant until the level it is at the cold mark (for a cold engine) or hot mark (for a hot engine).

   Note: Do not overfill the expansion tank with coolant.

5. Install the coolant-reservoir cap.

6. Close and latch the hood; refer to Closing the Hood.

1. Park the machine on a level surface, lower the cutting units, shut off the engine, engage the parking brake, and remove the key.

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

3. Unlatch the clamp and pivot open the rear screen (Figure 142).

   

   Figure 142

   1. Rear-screen latch
   2. Rear screen

4. Thoroughly clean both sides of the radiator/oil cooler with compressed air (Figure 143).

   

   Figure 143

   1. Radiator/oil cooler

5. Close the screen and secure the latch.

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

1. If the deflection is not 10 mm (3/8 inch), loosen the alternator mounting bolts (Figure 144).

   

   Figure 144

   1. Mounting bolt
   2. Alternator

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

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

The reservoir is filled at the factory with high-quality hydraulic fluid. Check the level of the hydraulic fluid before you first start the engine and daily thereafter; refer to Checking the Hydraulic-Fluid Level.

Recommended hydraulic fluid: Toro PX Extended Life Hydraulic Fluid; available in 19 L (5 US gallon) pails or 208 L (55 US gallon) drums.

Note: A machine using the recommended replacement fluid requires less frequent fluid and filter changes.

Alternative hydraulic fluids: If Toro PX Extended Life Hydraulic Fluid is not available, you may use another conventional, petroleum-based hydraulic fluid having specifications that fall within the listed range for all the following material properties and that it meets industry standards. Do not use synthetic fluid. Consult with your lubricant distributor to identify a satisfactory product.

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

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

Note: Many hydraulic fluids are almost colorless, making it difficult to spot leaks. A red dye additive for the hydraulic fluid is available in 20 ml (0.67 fl oz) bottles. A bottle is sufficient for 15 to 22 L (4 to 6 US gallons) of hydraulic fluid. Order Part No. 44-2500 from your authorized Toro distributor.

Important: Toro Premium Synthetic Biodegradable Hydraulic Fluid is the only synthetic biodegradable fluid approved by Toro. This fluid is compatible with the elastomers used in Toro hydraulic systems and is suitable for a wide-range of temperature conditions. This fluid is compatible with conventional mineral oils, but for maximum biodegradability and performance, the hydraulic system should be thoroughly flushed of conventional fluid. The oil is available in 19 L (5 US gallons) pails or 208 L (55 US gallons) from your authorized Toro distributor.

The reservoir is filled at the factory with high-quality hydraulic fluid. The best time to check the hydraulic oil is when the fluid is cold. The machine should be in its transport configuration.

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Clean the area around the filler neck and the cap of the hydraulic tank (Figure 145).

   

   Figure 145

   1. Full mark (dipstick)
   2. Add mark (dipstick)

3. Remove the cap/dipstick from the filler neck and wipe it with a clean rag.

4. Insert the dipstick into the filler neck; then remove it and check the level of fluid.

   Note: The fluid level should be within operating range on the dipstick.

   Important: Do not overfill the tank.

5. If the level is low, add the appropriate amount of fluid to raise the level to the full mark.

6. Install the cap/dipstick onto the filler neck.

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

30 L (8 US gallons); refer to Hydraulic Fluid Specifications

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

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. Place a large drain pan under the manifold (Figure 146) on the bottom the hydraulic tank; refer to Checking the Hydraulic-Fluid Level.

   

   Figure 146

   1. Manifold
   2. Loosen fitting here
   3. 90° fitting

3. Disconnect the 90° fitting from the manifold and allow the tank to drain.

4. When hydraulic fluid stops draining from the tank, connect the 90° fitting to the manifold.

5. Fill the tank with the specified hydraulic fluid; refer to Hydraulic Fluid Specifications and Hydraulic Fluid Capacity.

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

6. Install the tank cap.

7. Start the engine, and use all the hydraulic controls to distribute hydraulic fluid throughout the system.

8. Check for hydraulic-fluid leaks; refer to Checking for Leaks.

9. Check the level; refer to Checking the Hydraulic-Fluid Level

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

Changing the Return Filter

The hydraulic system is equipped with a return filter-service indicator (Figure 147). You view the filter-service indicator through the hole in the floor plate. With the engine running at operating temperature, check the color of the indicator as follows:

• Green indicates normal hydraulic-fluid flow through the filter.

• Ref indicates a restricted filter. Change the return filter.

Figure 147

1. Hydraulic-filter-restriction indicator

1. Prepare the machine for maintenance; refer to Preparing for Maintenance.

2. At the front of the machine, align a drain pan under the return filter (Figure 148).

   

   Figure 148

   1. Return filter
   2. Filter head

3. Remove the filter.

4. Wipe clean the filter mounting area of the filter head.

5. Apply a thin coat of the specified hydraulic fluid to the gasket of the new return filter.

6. Thread the filter onto the filter head by hand until the gasket contacts the mounting surface, then rotate the filter an additional 1/2 turn.

Each day before operating, check reel-to-bedknife contact, regardless if the quality of cut had previously been acceptable. There must be light contact across the full length of the reel and the bedknife (refer to Adjusting the Reel to Bedknife in the Operator's Manual for the cutting units).

Note: Additional instructions and procedures on backlapping are available in the Toro Reel Mower Basics (with sharpening guidelines)​, Form 09168SL.

1. Inspect the seat belt for wear, cuts, and other damage. Replace the seat belt(s) if any component does not operate properly.

2. Clean the seat belt as necessary.

Wash the machine as needed using water alone or with a mild detergent. You may use a rag when washing the machine.

Important: Do not use brackish or reclaimed water to clean the machine.

Important: Do not use power-washing equipment to wash the machine. Power-washing equipment may damage the electrical system, loosen important decals, or wash away necessary grease at friction points. Avoid excessive use of water near the control panel, engine, and battery.

Important: Do not wash the machine with the engine running. Doing so may result in internal engine damage.