Groundsmaster® 3300, 3310, and 3200 2-Wheel or 4-Wheel Drive Traction Unit

Refer to the following table for the weight that is shipped with each machine:

Ensure that your machine has the minimum amount of rear weight per your traction unit and attachment combination. For Models 31900, 31901, and 31907, you can also add more rear weight for improved slope performance.

• To determine the minimum number of weights required, refer to the Minimum Required Rear Weight table.

• To achieve an improved slope performance, add the number of each weight type as listed in the Required Rear Weight for Improved Slope Performance table.

  To ensure proper ROPS performance, do not add more weight than what is listed in this table.

Note: If you have an equipped CE Kit, refer to the kit Installation Instructions for the appropriate slope decal for your traction unit and attachment combination. Ensure that the correct amount of rear weight is added (i.e., weight to meet required slope standard or weight to meet improved slope performance).

Minimum Required Rear Weight

Traction Unit Model Number	Attachment Model Number(s) or Name	Number of Weights Required
		19 kg (42 lb)	6 kg (15 lb)	11 kg (25 lb)	Total
31900	31970, 31971, 31974	2	0	0	2
	31970, 31971, 31974 and Sunshade	3	0	0	3
	31972, 31973, 31975	3	0	0	3
	31972, 31973, 31975 and Sunshade	4	0	0	4
	02835	4	0	0	4
	02835 and Sunshade	5	0	0	5
	M-B Rotary Broom	4	0	0	4
	MSC23345 and 31990*	5	2	0	7
	M-B Rotary Broom and 31990*	5	2	3	10
	Erskine Snowthrower and 31990*	5	2	2	9
31901	31970, 31971, 31974	1	0	0	1
	31970, 31971, 31974 and Sunshade	2	0	0	2
	31972, 31973, 31975	2	0	0	2
	31972, 31973, 31975 and Sunshade	3	0	0	3
	02835	3	0	0	3
	02835 and Sunshade	3	0	0	3
	M-B Rotary Broom	4	0	0	4
	MSC23345 and 31990*	5	0	0	5
	M-B Rotary Broom and 31990*	5	2	3	10
	Erskine Snowthrower and 31990*	5	2	2	9
31907	31970, 31971	0	0	0	0
	31970, 31971 and Sunshade	0	0	0	0
	31972, 31973	1	0	0	1
	31972, 31973 and Sunshade	2	0	0	2
	02835	1	0	0	1
	02835 and Sunshade	2	0	0	2
	M-B Rotary Broom	1	0	0	1
	MSC23345 and 31990*	5	2	0	7
	M-B Rotary Broom and 31990*
	Erskine Snowthrower and 31990*
31909	31970, 31971	5	2	0	7
	31972, 31973
	02835
	MSC23345
	M-B Rotary Broom
	Erskine Snowthrower
*Model 31990 is the Winter Enclosure. The listed weight requirement is for a simultaneously equipped Winter Enclosure and attachment (e.g., snowthrower or rotary broom).

Required Rear Weight for Improved Slope Performance

Traction Unit Model Number	Attachment Model Number(s) or Name	Number of Weights Required
		19 kg (42 lb)	6 kg (15 lb)	11 kg (25 lb)	Total
31900	31970, 31971, 31974	5	0	0	5
	31970, 31971, 31974 and Sunshade	5	0		5
	31972, 31973, 31975	5	0		5
	31972, 31973, 31975 and Sunshade	5	0		5
	02835	5	0		5
	02835 and Sunshade	5	2		7
31901	31970, 31971, 31974	5	2	0	7
	31970, 31971, 31974 and Sunshade	5	0		5
	31972	5	0		5
	31973, 31975	5	2		7
	31972, 31973, 31975 and Sunshade	5	0		5
	02835	5	2		7
	02835 and Sunshade	5	2		7
31907	31970, 31971	5	2	0	7
	31970, 31971 and Sunshade	4	0		4
	31972, 31973	5	0		5
	31972, 31973 and Sunshade	3	0		3
	02835	3	2		5
	02835 and Sunshade	2	0		2

If you need to add rear weight, contact your authorized Toro distributor for additional weights and refer to the following installation procedures:

1. Loosen the hardware that secures the weight-lock rod to the bumper.

   

   Figure 20

   1. Weight-lock rod
   2. Nut
   3. Weight—19 kg (42 lb)

2. Add the required amount of weights.

3. Tighten the weight-lock-rod hardware to secure the weight to the bumper.

1. Refer to your authorized Toro distributor to order the following parts:

   Part Name	Quantity	Part Number
   Screw (3/8 x 3-1/2 inches)	2	116-4701
   Washer	2	125-9676
   Nut (3/8 inch)	2	104-8301

2. Use the hardware to secure the weights to the bumper (Figure 21).

   

   Figure 21

   1. Hardware
   2. Weight—6 kg (15 lb)

For traction unit/attachment configurations that require up to 2 weights (11 kg or 25 lb each) :

1. Refer to your authorized Toro distributor to order the Weight Bracket Kit (Part Number 144-0480).

2. Install the Weight Bracket Kit; refer to the kit Installation Instructions.

For traction unit/attachment configurations that require more than 2 weights (11 kg or 25 lb each): [e.g., traction unit Model 31900 equipped with MSC23345 and 31990]

1. Refer to your authorized Toro distributor to order the following parts:

   Part Name	Quantity	Part Number
   Bolt (3/8 x 4 inches)	2	323-16
   Nut (3/8 inch)	2	3256-3
   Weight (11 kg or 25 lb)	1	144-0484-03
   Weight Bracket Kit (includes mounting hardware and 2 weights)	1	144-0480

2. Perform the following steps per your specific situation:

   Note: Refer to Figure 22 for these steps.

   • For yet-to-be-installed Weight Bracket Kits:

     1. Use the bolts (3/8 x 4 inches) and nuts (3/8 inch) to secure the 3 weights to the bracket (Figure 22).

     2. Use the hex-head bolts and nuts (included in the kit) to secure the weight bracket to the machine (Figure 22).

   • For previously installed Weight Bracket Kits:

   1. Remove the weight bracket from the machine (Figure 22).

      Retain the hardware.

   2. Remove the existing hardware that secures the weights to the bracket.

   3. Use the bolts (3/8 x 4 inches) and nuts (3/8 inch) to secure the 3 weights to the bracket (Figure 22).

   4. Use the previously removed hardware to secure the weight bracket to the machine (Figure 22).

Figure 22

1. Nut (Part Number 3256-3)
2. Weights (included with kit)
3. Weight bracket
4. Additional weight
5. Bolt (Part Number 323-16)
6. Hex-head bolt (included with kit)

The attachment lift switch raises the attachment to the highest position (i.e., the TRANSPORT position) and lowers the attachment to the lowest position (i.e., the OPERATING) position.

• Raise the attachment: Press the rear of the switch.

• Lower the attachment: Press the front of the switch.

Raise the attachment to the TRANSPORT position whenever you transport the machine between locations. Lower the attachment to the OPERATING position whenever you are not using the machine.

• Engage the PTO: Pull up on the switch.

• Disengage the PTO: Push the switch down.

The only time you should engage the PTO is when the PTO attachment is in the OPERATING position (lowered to the ground with the driveshaft connected) and you are ready to begin operation.

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

The key switch has 3 positions: OFF, ON/PREHEAT, and START.

Use the switch to start or shut off the engine [refer to Starting the Engine or Shutting Off the Engine] or to review the display-screen information [refer to Understanding the Display-Screen Information].

The throttle control adjusts the engine speed.

• Increase the engine speed: Move the lever forward.

• Decrease the engine speed: Move the lever rearward.

Use the glow-plug switch to help start a cold engine.

The display screen shows information about your machine, such as the operating status, various diagnostics, and other information.

Refer to Understanding the Display-Screen Information for more display-screen information.

Refer to Using the Display-Screen Button.

Use the switch (Figure 29) to turn the windshield wipers on or off.

Rotate the fan-control knob (Figure 29) to regulate the speed of the fan.

Press the switch (Figure 29) to turn the dome light on or off.

Rotate the temperature-control knob (Figure 29) to regulate the air temperature in the cab.

Use this switch (Figure 29) to turn the air conditioning on or off. Use the fan-control knob to control the air-conditioning.

Open the recirculation vents (Figure 29) when the air conditioning is on.

Check the following machine systems each day before operating the machine:

• Air-cleaner indicator; refer to Servicing the Air Cleaner

• Engine oil; refer to Checking the Engine-Oil Level

• Coolant system; refer to Checking the Cooling System and Coolant Level

• Hood screen and radiator; refer to Checking the Cooling Fins

• Hydraulic system; refer to Checking the Hydraulic-Fluid Level

• PTO-shaft grease points; refer to Greasing the Bearings and Bushings

• Tire air pressure specification (2-wheel-drive machines):

  • Front tires: 138 kPa (20 psi)

  • Rear tires: 193 kPa (28 psi)

• Tire air pressure specification (4-wheel-drive machines): 138 kPa (20 psi)

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

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

Figure 31

The purpose of the safety-interlock system is to prevent the engine from cranking or starting unless the traction pedal is in neutral and the PTO switch is in the OFF position. In addition, the engine should stop when the following occurs:

• The PTO switch is set to the ON position and you are not in the seat.

• The traction pedal is pressed but you are not in the seat.

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

1. Move the PTO switch to OFF position and remove your foot from traction pedal.

2. Rotate the key switch to the START position. If the engine cranks, proceed to step 3.

   Note: If engine does not crank, there may be a malfunction in the safety-interlock system.

3. With the engine running, rise from the seat and set the PTO switch to the ON position. The engine should shut off within 2 seconds. If the engine shuts off, proceed to step 4.

   Important: If engine does not shut off, there is a malfunction in the safety-interlock system. Refer to your authorized Toro distributor.

4. With the engine running and the PTO switch set to the OFF position, raise off the seat and press the traction pedal. The engine should shut off within 2 seconds. If engine shuts off, proceed to step 5.

   Important: If engine does not shut off, there is a malfunction in the safety-interlock system. Refer to your authorized Toro distributor.

5. Engage the parking brake. With the engine running and the PTO switch set to the ON position, press the traction pedal. The engine should shut off within 2 seconds. If engine shuts off, the switch is operating correctly; the interlock system is ready for machine operation.

   Important: If engine does not shut off, there is a malfunction in the safety-interlock system. Refer to your authorized Toro distributor.

The display screen shows information about your machine, such as the operating status, various diagnostics, and other information about the machine. There are 2 main-information screens (Figure 35) and a main menu screen.

Figure 35

1. Battery level and hour meter screen
2. Engine temperature screen

Using the Display-Screen Button

Use the display-screen button (shown in Figure 36) to toggle between the 2 main-information screens and to access the main menu.

Figure 36

1. Display screen
2. Display-screen button

• To access the main menu: Hold down the display-screen button until the menu items appear on the screen.

• To select a menu item: Quickly press the display-screen button twice.

  You can also perform this action to toggle an option (e.g., toggling between English or metric units in the SETTINGS screen).

• To return to the previous screen (e.g., returning to the MAIN MENU screen from the SETTINGS screen, or returning to the main-information screens from the MAIN MENU screen): Hold down the display-screen button until the previous screen appears.

• To scroll down to the next menu item: Press the display-screen button once.

Understanding the Menu Items

Main Menu

Menu Item	Description
FAULTS	Contains a list of the recent machine faults. Refer to the Service Manual or your authorized Toro distributor for more information on the FAULTS menu.
SERVICE	Contains information on the machine such as hours of use and counts. Refer to the Service table.
DIAGNOSTICS	Lists various states and data that the machine currently has. You can use this information to troubleshoot certain issues, as it quickly tells you which machine controls are on/off and lists control levels (e.g., sensor values).
SETTINGS	Allows you to customize and modify configuration variables on the InfoCenter display. Refer to the Settings table.
ABOUT	Lists the model number, serial number, and software version of your machine. Refer to the About table.

Service

Menu Item	Description
HOURS	Lists the total number of hours that the key, engine, and PTO have been on.
COUNTS	Lists the number of engine and PTO starts.

Settings

Menu Item	Description
UNITS	Controls the units used on the display screen. The menu choices are English or metric.
LANGUAGE	Controls the language used on the display screen.
BACKLIGHT	Controls the brightness of the display screen.
CONTRAST	Controls the contrast of the display screen.
PROTECTED MENUS	Allows a person authorized by your company with the PIN code to access protected menus (e.g., the slope sensor setting).
PROTECT SETTINGS	When disabled, you can access protected settings without entering the PIN code.
TURNAROUND	Engages or disengages Turnaround mode.
SLOPE SENSOR INSTALLED	Shows whether or not a slope sensor is installed. If a slope sensor is removed from the machine, this setting can be disabled to clear the slope-sensor communication fault.

Protected under Protected Menus—accessible only by entering PIN

Diagnostics

Menu Item	Description
DECK	Indicates if the cutting unit inputs/outputs are active.
PTO	Indicates if the PTO is active.
ENGINE	Indicates if the engine inputs/outputs are active.

About

Menu Item	Description
MODEL	Lists the model number of the machine.
SN	Lists the serial number of the machine.
S/W REV	Lists the software revision of the master controller.

Understanding the Display-Screen Icons

Refer to the following table for a description of each display-screen icon:

Display-Screen Icons

	Engine speed
	Engine fault
	Hour meter
	Air intake heater is active
	Operator must sit in seat
	Parking brake is engaged
	Neutral
	PTO is engaged
	PTO is disabled
	Indicates when the cutting units are being lowered
	Indicates when the cutting units are being raised
	PIN passcode
	Battery
	Coolant temperature

1. Model 31900 and 31901 machines: Ensure that the fuel-valve lever is in the ON position; refer to Figure 59 in Servicing the Fuel Filter.

2. Sit on the operator’s seat and fasten the seat belt.

3. Ensure that the parking brake is engaged and the PTO is disengaged.

4. Preheat the engine by rotating the key switch to the ON position.

5. Press and hold the glow-plug switch for 10 seconds.

6. Rotate the key to the START position, crank the engine for no longer than 15 seconds, and allow the key to return to the ON position.

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

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

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

Perform the following to reset the PTO function:

1. Push down the PTO switch.

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

3. Pull up the PTO switch.

Engage the turnaround mode whenever you install the flail mower (Model 02835).

Turnaround mode allows you to quickly raise the flail mower above the turf when completing a quick turn at the end of a mowing pass, or while navigating around obstacles.

When you lower the flail mower to the OPERATING position, you can quickly press and release the attachment lift switch rearward to slightly raise the flail when you perform a quick turn. Once you have completed the turn, press the lift switch to lower the flail back to the ground and resume mowing.

1. Use the throttle control to lower the engine speed.

2. Move the PTO switch to the OFF position.

3. Rotate the key switch to the OFF position and remove the key from the switch.

You can rotate the cutting unit from the TRANSPORT position (A in Figure 37) to the SERVICE position (B in Figure 37). Use the SERVICE position to maintain the cutting unit blades or clean underneath the cutting unit; refer to your cutting unit Operator’s Manual.

Figure 37

1. TRANSPORT position
2. SERVICE position

If you must tow or push the machine, set the traction pump to bypass the hydraulic fluid. Move the machine at a speed below 4.8 kph (3 mph) for a very short distance.

Important: If you exceed towing limits, severe damage to the hydraulic pump may result.If you must move the machine more than a short distance, transport it on a trailer.

1. Access the bypass valve from under the machine.

   

   Figure 43

   1. Traction pump
   2. Bypass valve

2. Use an 18 mm (11/16 inch) box-end wrench to loosen the bypass valve, then open the valve 3 revolutions maximum.

   Important: Do not start or run the engine when the valve is set to the bypass position.

3. After towing and before starting the engine, tighten the bypass valve to 20 N·m (15 ft-lb).

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

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

• Tie the machine down securely.

• Remove the key before storing or hauling the machine.

1. Release the straps from each side of the machine (Figure 46).

   

   Figure 46

2. Raise the hood (Figure 46).

Note: If your machine is equipped with a hood lock, use a key to unlock and raise the hood.

The machine has grease fittings that you must lubricate regularly with No. 2 lithium grease.

Important: Lubricate the machine immediately after every washing.

• Idler arm (Figure 47)

  

  Figure 47

  1. Idler arm

• PTO driveshaft (Figure 48)

  Important: Grease the driveshaft before each use or daily.

  

  Figure 48

  1. Grease fittings

• Axle pivot pin (Figure 49)

  

  Figure 49

  1. Axle pivot pin

• Front of the machine (Figure 50):

  • Attachment pivot hubs (2)

  • Lift-cylinder bushings (2)

  • Lift-arm pivot pins (2)

  

  Figure 50

  Front of the machine

  1. Attachment pivot hubs
  2. Lift-cylinder bushings
  3. Lift-arm pivot hubs

• Rear of the machine (Figure 51):

  • Hydraulic-cylinder ball joint (2)

  • Axle spindle hubs (2)

  

  Figure 51

  Rear of the machine (bumper removed)

  1. Axle spindle hubs
  2. Steering-cylinder ball joint

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

Service the air-cleaner element only when the restriction indicator (Figure 55) requires it. Changing the air cleaner element before it is necessary increases the chance of dirt entering the engine when you remove the element.

Figure 55

1. Air-cleaner restriction indicator

Important: Ensure that the cover is seated correctly and seals with the air-cleaner body and that the latches are closed properly.

1. Replace the air filter element (Figure 56).

   

   Figure 56

   Important: Do not clean a used element; cleaning it can damage the filter media.

2. Reset the restriction indicator (Figure 55) if it shows red.

Drain water from the fuel/water separator as shown in Figure 57.

Figure 57

Replace the fuel/water separator as shown in Figure 57.

Figure 58

Drain and clean tank if fuel system becomes contaminated or if you store the machine for an extended period. Use clean diesel fuel to flush out the tank.

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

The battery is adjacent to the fuel tank on the left side of the machine. To access the battery, raise the hood, unscrew the thumb screw that secures the cover over the battery, and remove the cover (Figure 61).

Note: The screw is retained with a locking washer.

Figure 61

1. Battery cover
2. Thumb screw

1. Remove the negative battery cable from the battery post (Figure 62).

   

   Figure 62

   1. Negative battery cable
   2. Positive battery cable

2. Lift the insulator and remove the positive battery cable from the battery post (Figure 62).

1. Connect the positive cable to the battery and tighten the battery-clamp nut (Figure 63).

   

   Figure 63

   1. Positive battery cable
   2. Negative battery cable

2. Connect the negative cable to the battery and tighten the battery-clamp nut (Figure 63).

   Important: Ensure that the cable-clamp fasteners do not interfere with the fuel tank.

A retainer (Figure 64) holds the battery in the tray. Loosen the retainer hardware to remove the battery; tighten it when installing the battery.

Note: To access the battery, refer to Accessing the Battery. Replace the cover when you install the battery.

Figure 64

1. Retainer hardware
2. Retainer

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

Check the battery condition weekly or after every 50 hours of operation. Keep the terminals and the entire battery case clean, as a dirty battery will discharge slowly.

1. Access the battery; refer to Accessing the Battery.

2. Remove the rubber insulator from the positive terminal and inspect the battery. If the battery is dirty, do the following steps:

   1. Wash the entire case with a solution of baking soda and water.

   2. Coat both battery posts and cable connectors with Grafo 112X (skin-over) grease (Toro Part Number 505-47) to prevent corrosion.

   3. Slide the rubber insulator over the positive terminal.

   4. Close the battery cover.

Wheel-lug nut torque specification: 102 to 108 N∙m (75 to 80 ft-lb)

Torque the lug nuts at the front and rear wheels (4-wheel-drive machines only) in the pattern as shown in Figure 69 and Figure 70 to the specified torque.

• Front wheels: refer to Figure 69

  

  Figure 69

• Rear wheels (4-wheel-drive machines only): refer to Figure 70

  

  Figure 70

If you separate the PTO-driveshaft telescoping end the from the clutch end, ensure that the markings are aligned (Figure 71) when you install the telescoping end. The end yokes should also be aligned as shown in Figure 71.

Important: If the markings on the driveshaft are not aligned, severe imbalance may occur in the driveline system.

Figure 71

1. Driveshaft markings

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.

When the engine is cold, the coolant level should be no higher than the COLD mark on the side of the expansion tank (Figure 72). When the engine is warm, the coolant level should be no higher than the FULL (HOT) mark.

If the coolant is above the COLD mark when the engine is cold, it may leak out of the tank when the engine gets hot during operation.

1. When the engine is cold, check the level of the coolant in the expansion tank.

   

   Figure 72

   1. Cap
   2. FULL (HOT) mark
   3. COLD mark

2. If the coolant is not visible at the COLD mark or below when cold, remove the expansion-tank cap and add the recommended replacement coolant [refer to Coolant Specification] as required to bring the level to the COLD mark.

   Important: Do not use water only or alcohol-based coolants.Do not fill past the COLD mark on the tank.

3. Install the expansion-tank cap.

Figure 73

1. Hood-air-intake screen

1. Raise the hood; refer to Raising the Hood.

2. Use compressed air to clean the hood screen (shown in Figure 73). Direct the air out from the machine.

• Use compressed air to clean the radiator fins. Direct the air out from the machine (Figure 74).

  Important: Do not use water to clean the fins.

  

  Figure 74

  1. Compressed-air direction

• Straighten any bent fins.

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

Proper tension of the belt allows 10 mm (3/8 inch) of deflection when a force of 4.5 kg (10 lb) is applied on the belt midway between the pulleys.

If the deflection is not 10 mm (3/8 inch), perform the following steps:

1. Loosen the alternator-mounting bolt (Figure 68).

   

   Figure 77

   1. Mounting bolt
   2. Alternator

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

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

1. Allow the engine to cool.

2. Raise the engine hood.

3. Adjust the air gap so that a 0.3 mm (0.012 inch) feeler gauge slides in between the clutch lining and friction plate with light pressure (Figure 80).

   Note: You can decrease the gap by turning the adjusting nuts clockwise (Figure 80). The maximum service gap is 0.6 mm (0.024 inch). Adjust all 3 air gaps to 0.4 mm (0.012 inches).

   

   Figure 80

   1. Clutch
   2. Adjusting nut (3)
   3. 0.3 mm (0.012 inch) air gap (3)

4. After the 3 air gaps are adjusted, check all 3 again.

   Note: Adjusting 1 air gap can alter the other gaps.

You can adjust the traction pedal for operator comfort or to reduce the maximum forward speed of the machine.

1. Move the traction pedal fully forward (Figure 81).

   Note: The traction pedal should contact the traction-pedal stop before the pump reaches full stroke.

   

   Figure 81

   1. Traction pedal
   2. Traction-pedal stop
   3. Jam nut (top of the footrest plate)

2. If the traction pedal does not contact the traction-pedal stop or if you want to reduce the forward speed of the machine, perform the following:

   1. Hold the traction-pedal stop (Figure 81) with a wrench.

   2. Loosen the jam nut at the bottom of the footrest plate (Figure 82).

      

      Figure 82

      1. Jam nut (bottom of the footrest plate)

   3. Move the traction pedal to the full forward position (Figure 81).

   4. While holding the traction-pedal stop, adjust the jam nut that is above the footrest plate (Figure 81) until the traction pedal makes contact with the stop.

   5. Lengthen the traction-pedal stop position by rotating the stop 1 full rotation counterclockwise away from the jam nut above the footrest plate.

      Note: Shortening the traction-pedal-stop position will increase the forward speed of the machine.

   6. While holding the traction-pedal stop, torque the jam nut at the bottom of the footrest plate (Figure 81 and Figure 82) to 37 to 45 N∙m (27 to 33 ft-lb).

   7. Check that the traction pedal contacts the traction-pedal stop before the pump reaches full stroke.

      Note: If the traction pedal does not contact the traction-pedal stop, repeat steps 1 through 7.

The reservoir is filled at the factory with approximately 22.7 L (6 US gallon) of high-quality hydraulic fluid. Check the level of the hydraulic fluid before the engine is first started and daily thereafter; refer to Checking the Hydraulic-Fluid Level.

Recommended replacement 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 (2/3 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 gallon) pails or 208 L (55 US gallon) drums from your authorized Toro distributor.

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

2. Remove the plug from the hydraulic tank (Figure 83).

   

   Figure 83

3. Remove the dipstick from the hydraulic tank and wipe it with a clean cloth (Figure 83).

4. Insert the dipstick into the hydraulic tank.

5. Remove the dipstick and check the fluid level (Figure 84).

   • If you have a cutting unit equipped: The hydraulic-fluid level is at the appropriate level when the fluid appears between the lower 2 marks on the dipstick (A in Figure 84). It is also acceptable for the fluid level to be above the lower marks.

   • If you have the Hydraulic Driven Attachment Hose Kit equipped: The hydraulic-fluid level is at the appropriate level when the fluid appears between the upper 2 marks on the dipstick (B in Figure 84).

   

   Figure 84

6. If the fluid level is below the appropriate lower mark (per your equipped attachment; refer to step 5) on the dipstick, add the specified hydraulic fluid into the tank. Repeat steps 3 through 5 until the fluid level appears between the appropriate 2 marks on the dipstick.

7. Insert the dipstick and plug into the hydraulic tank.

8. Hand-tighten the plug.

   Important: Do not use a tool to tighten the plug.

9. Check all hydraulic hoses and fittings for leaks.

If the hydraulic fluid becomes contaminated, contact your authorized Toro distributor; the system must be flushed. Contaminated fluid looks milky or black when compared to clean fluid.

Important: Use Toro replacement filters; refer to the machine Parts Catalog. Using any other filter may void the warranty on some components.

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

2. Place a large drain pan under the hydraulic-fluid tank.

3. Remove the hydraulic-tank cap and dipstick.

4. Remove the drain plug (Figure 85) from the bottom of the tank and let the hydraulic fluid flow into the pan.

   

   Figure 85

   1. Hydraulic filter
   2. Drain plug

5. Clean the area around the filter-mounting area.

6. Place a drain pan under the filter (Figure 85), remove the filter, and let any remaining oil drain into the pan.

7. Lubricate the new filter gasket and fill the filter with hydraulic fluid.

8. Ensure that the filter-mounting area is clean and screw the filter on until the gasket contacts the mounting plate; then tighten the filter an additional 1/2 turn.

9. Fill the hydraulic tank with hydraulic fluid; refer to Checking the Hydraulic-Fluid Level.

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

10. Install the drain plug when the hydraulic fluid stops draining.

11. Install the reservoir dipstick and cap.

12. Start the engine and use all of the hydraulic controls in the following order to distribute hydraulic fluid throughout the system:

    1. Use the traction pedal to move the machine forward and backward.

    2. Use the steering wheel to move the tires all the way to the right and left.

    3. Use the lift switch to raise and lower the attachment (e.g., cutting unit).

13. Check for leaks and shut off the engine.

14. Check the hydraulic fluid level in the tank; refer to Checking the Hydraulic-Fluid Level.

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.

Important: Use care around the cab seals (Figure 86). 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 the pressure washer directly on the cab seals or under the rear overhang.

Figure 86

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

1. Remove the knobs and grates from the cab rear overhang (Figure 87).

   

   Figure 87

   1. Filter
   2. Knob
   3. Grate

2. Remove the air filters from the cab.

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

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

4. Use the knobs and grates to install the filters into the cab (Figure 87).

The purpose of the cab-condenser filter is to prevent large debris, such as grass and leaves, from entering the cab condenser and condenser fans.

1. Pull the screen cover straight down.

2. Clean the condenser filter with water.

   Note: Do not use a pressure washer.

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

3. Allow the filter to dry before installing it into the machine.

4. Rotate the filter screen around the tabs until the latch locks into the latch-mount assembly (Figure 88).

   

   Figure 88

   1. Latch-mount assembly
   2. Condenser filter
   3. Screen cover

Note: Refer to the Parts Catalog for the appropriate bulb part number.

1. Use a screwdriver to remove the light lens from the control panel. (Figure 89).

   

   Figure 89

   1. Screwdriver
   2. Bulb
   3. Lens

2. Remove the bulb from the light base (Figure 89).

3. Install a new bulb into the light base.

4. Install the lens into the control panel.

Note: The windshield-wiper-fluid reservoir is located next to the engine on the right side of the machine.

1. Remove the cap (Figure 90) on the reservoir.

   

   Figure 90

   1. Reservoir cap
   2. Reservoir

2. Fill the reservoir with wiper fluid.

3. Replace the cap on the reservoir.