Reelmaster® 3100-D Traction Unit

Parts needed for this procedure:

1. Mount a wheel assembly onto each wheel hub (valve stem outward).

   Important: The rear tire has a narrower rim than the front tires.

2. Install lug nuts and torque to 61 to 88 N∙m (45 to 65 ft-lb).

Parts needed for this procedure:

1. Slide the steering wheel onto the steering shaft (Figure 3).

   

   Figure 3

   1. Steering wheel
   2. Washer
   3. Jam nut
   4. Cap

2. Slide the washer onto the steering shaft (Figure 3).

3. Secure the steering wheel to the shaft with a jam nut and tighten it to 27 to 35 N∙m (20 to 26 ft-lb) (Figure 3).

4. Install the cap to the steering wheel and secure it with a screw (Figure 3).

Parts needed for this procedure:

Note: If the battery is not filled with electrolyte or activated, bulk electrolyte with 1.260 specific gravity must be purchased from a local battery supply outlet and added to the battery.

1. Purchase bulk electrolyte with 1.260 specific gravity from a local battery supply outlet.

2. Open the hood.

3. Remove the battery cover (Figure 4).

   

   Figure 4

   1. Battery cover

4. Remove the filler caps from the battery and slowly fill each cell until electrolyte is just above the plates.

5. Install the filler caps and connect a 3 to 4 A battery charger to the battery posts. Charge the battery at a rate of 3 to 4 A for 4 to 8 hours.

   Warning

   Charging the battery produces gasses that can explode.

   • Keep sparks and flames away from battery.

   • Never smoke near the battery.

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

7. Remove the filler caps. Slowly add electrolyte to each cell until the level is up to the fill ring. Install the filler caps.

   Important: Do not overfill the battery. Electrolyte will overflow onto other parts of the machine and severe corrosion and deterioration will result.

8. Install the positive cable (red) to the positive (+) terminal and the negative cable (black) to the negative (–) terminal of the battery and secure them with bolts and nuts (Figure 5). Make sure that the positive (+) terminal is all of the way onto the post and the cable is positioned snug to the battery. The cable must not contact the battery cover.

   Warning

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

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

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

   

   Figure 5

   1. Positive (+) battery cable
   2. Negative (–) battery cable

   Important: If the battery is ever removed, make sure that the battery clamp bolts are installed with the bolt heads positioned on the bottom side and the nuts on the top side. If the clamp bolts are reversed, they may interfere with the hydraulic tubes when shifting the cutting units.

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

10. Slide the rubber boot over the positive terminal to prevent a possible short from occurring.

11. Install the battery cover.

Parts needed for this procedure:

1. Park the machine on a flat, level surface.

2. Verify that the machine is level by placing a hand held inclinometer (supplied with the machine) on the frame cross rail, by the fuel tank (Figure 6). The inclinometer should read zero degrees when viewed from the operator’s position.

   

   Figure 6

   1. Angle indicator

3. If the inclinometer does not read zero degrees, move the machine to a location where a zero degree reading is obtained. The angle indicator, mounted on the machine, should now read zero degrees as well.

4. If the angle indicator does not read zero degrees, loosen the 2 screws and nuts securing the angle indicator to the mounting bracket, adjust the indicator to obtain a zero degree reading, and tighten the bolts.

Parts needed for this procedure:

If this machine will be used for CE, affix the CE decal over the corresponding non-CE decal.

Parts needed for this procedure:

1. Unhook the hood latch from the hood-latch bracket.

2. Remove the rivets (2) securing the hood-latch bracket to the hood (Figure 7). Remove the hood-latch bracket from the hood.

   

   Figure 7

   1. Hood-latch bracket
   2. Rivets

3. While aligning the mounting holes, position the CE lock bracket and the hood-latch bracket onto the hood. The lock bracket must be against the hood (Figure 8). Do not remove the bolt and nut assembly from the lock bracket arm.

   

   Figure 8

   1. CE lock bracket
   2. Bolt and nut assembly

4. Align the washers with the holes on the inside of the hood.

5. Rivet the brackets and the washers to the hood (Figure 8).

6. Hook the latch onto the hood-latch bracket (Figure 9).

   

   Figure 9

   1. Hood latch

7. Screw the bolt into the other arm of hood-lock bracket to lock the latch in position (Figure 10).

   Note: Tighten the bolt securely but do not tighten the nut.

   

   Figure 10

   1. Bolt
   2. Nut
   3. Arm of hood-lock bracket

Parts needed for this procedure:

1. Position the exhaust guard around the muffler while aligning the mounting holes with the holes in the frame (Figure 11).

   

   Figure 11

   1. Exhaust guard

2. Secure the exhaust guard to the frame with 4 self-tapping screws (Figure 11).

Parts needed for this procedure:

Important: Never weld or modify a rollover protection system (ROPS). Replace a damaged ROPS; do not repair or revise it.

1. Lower the roll bar onto the traction unit mounting brackets, aligning the mounting holes. Ensure that the vent tube on the roll bar is on the left side of the machine (Figure 12).

   

   Figure 12

   1. ROPS
   2. Mounting bracket
   3. Vent tube
   4. Fuel line vent tube hose
   5. Hose clamp

2. Secure each side of the roll bar to the mounting brackets with 2 flange head bolts and locknuts (Figure 12). Torque the fasteners to 81 N∙m (60 ft-lb).

3. Secure the fuel line vent hose to the vent tube on the roll bar with the hose clamp.

   Caution

   Starting the engine with the fuel line vent hose disconnected from the vent tube will cause fuel will flow from the hose, increasing the risk of fire or explosion. A fire or explosion from fuel can burn you and others and can cause property damage.

   Connect the fuel line vent hose to the vent tube prior to starting the engine.

Parts needed for this procedure:

1. Remove the 2 bolts that secure the lift arm pivot shaft link to the lift arm pivot shafts, and remove and retain the pivot shaft link and bolts (Figure 13).

   

   Figure 13

   1. Lift arm pivot shaft link
   2. Lift arm pivot shaft

2. Insert a pivot rod into each lift arm and align the mounting holes (Figure 14).

   

   Figure 14

   1. Lift arm
   2. Pivot rod

3. Secure the pivot rods to the lift arms with 2 bolts (5/16 x 7/8 inch).

4. Insert the lift arms onto the lift arm pivot shafts (Figure 15), and secure each with a lift arm pivot shaft link and bolts previously removed.

   Note: Torque the bolts to 95 N∙m (70 ft-lb).

   

   Figure 15

   1. Lift arm, right
   2. Retaining ring
   3. Lift arm, left
   4. Lift cylinder
   5. Spacers (2)
   6. Mounting pin

5. Remove the rear retaining rings securing the mounting pins to each end of the lift cylinder.

6. Secure the right end of the lift cylinder to the right lift arm with a pin and 2 spacers (Figure 15). Secure it with a retaining ring.

7. Secure the left end of the lift cylinder to the left lift arm with a pin. Secure it with a retaining ring.

1. Remove the cutting units from the cartons. Adjust them as described in the cutting unit operator’s manual.

2. Position a front carrier frame (Figure 16) onto each front cutting unit.

   

   Figure 16

   1. Front carrier frame

3. Secure the mounting links to the front carrier frames as follows:

   • Secure the front mounting links to the middle carrier frame holes with a bolt (3/8 x 2-1/4 inch), 2 flat washers, and a locknut, as shown in Figure 17. Position a washer on each side of the link when mounting. Torque the fasteners to 42 N∙m (31 ft-lb).

   • Secure the rear mounting links to the middle carrier frame holes with a bolt (3/8 x 2-1/4 inch), 2 flat washers, and a locknut, as shown in Figure 17. Position a washer on each side of the link when mounting. Torque the fasteners to 42 N∙m (31 ft-lb).

     

     Figure 17

     1. Front carrier frame
     2. Front mounting link
     3. Rear mounting link

4. Position the rear carrier frame (Figure 18) onto the rear cutting unit.

   

   Figure 18

   1. Rear carrier frame

5. Secure the mounting links to the rear carrier frame as follows:

   • Secure the front mounting links to the carrier frame holes with a bolt (3/8 x 2-1/4 inch), 2 flat washers, and a locknut, as shown in Figure 19. Position a washer on each side of the link when mounting. Torque the fasteners to 42 N∙m (31 ft-lb).

   • Secure the rear mounting links to the rear carrier frame holes with a bolt (3/8 x 2-1/4 inch), 2 flat washers, and a locknut, as shown in Figure 19. Position a washer on each side of the link when mounting. Torque the fasteners to 42 N∙m (31 ft-lb).

     

     Figure 19

     1. Rear carrier frame
     2. Front mounting link
     3. Rear mounting link

1. Slide a thrust washer onto each front lift arm pivot rod.

2. Slide the cutting unit carrier frame onto the pivot rod and secure it with a lynch pin (Figure 20).

   Note: On rear cutting unit, position the thrust washer between the rear of the carrier frame and the lynch pin.

   

   Figure 20

   1. Thrust washer
   2. Carrier frame
   3. Lynch pin

3. Grease all the lift arm and carrier frame pivot points.

   Important: Ensure that the hoses are free of twists or sharp bends and that the rear cutting unit hoses are routed as show in (Figure 21). Raise the cutting units and shift them to the left (Model 03171). The rear cutting unit hoses must not contact traction cable bracket. Reposition the fittings and/or hoses, if necessary.

   

   Figure 21

4. Route a tipper chain up through the slot on the end of each carrier frame. Secure the tipper chain to the top of the carrier frame with a bolt, a washer, and a locknut (Figure 22).

   

   Figure 22

   1. Tipper chain

1. Position the cutting units in front of the lift arm pivot rods.

2. Remove the weight and O-ring (Figure 23) from the inside end of the right cutting unit.

   

   Figure 23

   1. O-ring
   2. Weight
   3. Mounting bolts

3. Remove the plug from the bearing housing on the outside end of the right cutting unit and install the weights and gasket.

4. Remove the shipping plug from the bearing housings on the remaining cutting units.

5. Insert the O-ring (supplied with the cutting unit) on the flange of the drive motor (Figure 24).

   

   Figure 24

   1. O-ring
   2. Reel motor

6. Mount the motor to the drive end of the cutting unit, and secure it with 2 cap screws provided with cutting unit (Figure 24).

1. Start the engine, raise the lift arms, and check to ensure that the clearance between each lift arm and the floor plate bracket is 5 to 8 mm (0.18 to 0.32 inches) (Figure 25).

   

   Figure 25

   Cutting units removed for clarity

   1. Lift arm
   2. Floor plate bracket
   3. Clearance

   Note: If the clearance is not in this range, adjust the cylinder as follows:

   1. Back off the stop bolts and adjust the cylinder to attain the clearance (Figure 26).

      

      Figure 26

      1. Stop bolt
      2. Lift arm
      3. Clearance

   2. Back off the jam nut on the cylinder (Figure 27).

      

      Figure 27

      1. Front cylinder
      2. Jam nut

   3. Remove the pin from the rod end and rotate the clevis.

   4. Install the pin and check the clearance.

   5. Repeat steps 1 through 4 if necessary.

   6. Tighten the clevis jam nut.

   Note: If the rear lift arm clunks during transport, reduce the clearance.

2. Check to ensure that the clearance between each lift arm and stop bolt is 0.13 to 1.02 mm (0.005 to 0.040 inches) (Figure 26).

   Note: If the clearance is not in this range, adjust the stop bolts to attain clearance.

3. Start the engine, raise the lift arms, and check to ensure that the clearance between the wear strap on the top of the rear cutting unit wear bar and the bumper strap is 0.51 to 2.54 mm (0.02 to 0.10 inches) as shown in Figure 28.

   

   Figure 28

   1. Wear bar
   2. Bumper strap

   If the clearance is not in this range, adjust the rear cylinder as follows:

   1. Lower the cutting units and back off the jam nut on the cylinder (Figure 29).

      

      Figure 29

      1. Rear cylinder
      2. Adjusting nut

   2. Grasp the cylinder rod close to the nut with a pliers and rag and rotate the rod.

   3. Raise the cutting units and check the clearance.

   4. Repeat steps 1 through 3 if necessary.

   5. Tighten the clevis jam nut.

Important: Lack of clearance at the front stops or the rear wear bar could damage the lift arms.

Parts needed for this procedure:

When cutting in higher heights of cut, it is recommended that the Tipper Roller Kit be installed.

1. Raise the cutting units all the way up.

2. Locate the frame bracket above the center cutting unit (Figure 30).

3. While pressing down on the front roller of the center cutting unit, determine which holes on the tipper bracket align with the frame bracket holes to attain the same roller contact when the tipper bracket is installed (Figure 30).

   

   Figure 30

   1. Frame bracket
   2. Tipper bracket

4. Lower the cutting units and mount the tipper bracket to the frame with the 2 carriage bolts and 2 nuts supplied with the kit (Figure 30).

Press the traction forward pedal (Figure 31) to move forward. Press the traction reverse pedal (Figure 31) to move backward or to assist in stopping when moving forward. Also, allow the pedal to move or move it to the NEUTRAL position to stop the machine.

Using your heel, move the mow/transport slide (Figure 31) to the left to transport and to the right to mow. The cutting units operate only in the mow position.

Important: The mow speed is set at the factory to 9.7 km/h (6 mph). It can be increased or decreased by adjusting the speed stop screw (Figure 32).

Figure 32

1. Speed stop screw

Pull the tilt steering lever (Figure 31) back to adjust the steering wheel to the desired position, then push the lever forward to tighten.

The slot in the operator platform (Figure 31) indicates when the cutting units are in the center position.

The angle indicator (Figure 31) indicates the side hill angle of the machine in degrees.

The ignition switch (Figure 33), which is used to start, stop, and preheat the engine, has 3 positions: OFF, ON/PREHEAT, and START. Rotate the key to the ON/PREHEAT position until the glow plug indicator light goes out (approximately 7 seconds); then rotate the key to the START position to engage the starter motor. Release the key when the engine starts. The key automatically moves to the ON/RUN position. To shut off the engine, rotate the key to the OFF position and remove the key from the switch to prevent accidental starting.

Figure 33

1. Throttle
2. Hour meter
3. Temperature light
4. Oil-pressure light
5. Glow-plug indicator light
6. Alternator light
7. Cutting-unit drive switch
8. Cutting-unit shift lever
9. Ignition switch
10. Parking brake
11. Lift lever lock

Move the throttle (Figure 33) forward to increase the engine speed and rearward to decrease the engine speed.

The cutting unit drive switch (Figure 33) has 2 positions: ENGAGE and DISENGAGE. The rocker switch operates a solenoid valve on the valve bank to drive the cutting units.

The hour meter (Figure 33) indicates the total hours of machine operation. The hour meter starts to function whenever the key switch is on.

To lower the cutting units to the ground, move the cutting unit shift lever (Figure 33) forward. The cutting units do not drop unless the engine is running, and they do not operate in the raised position. To raise the cutting units, pull the shift lever rearward to the RAISE position.

Move the lever to the right or left to move the cutting units in the same direction. This should only be done when the cutting units are raised or if they are on the ground and the machine is moving (Model 03171 only).

Note: The lever does not have to be held in the forward position while the cutting units are lowered.

The temperature warning light (Figure 33) glows if the engine coolant temperature is high. If you do not stop the traction unit and the coolant temperature rises another 10°F, the engine shuts off.

The oil pressure warning light (Figure 33) glows if the engine oil pressure drops below a safe level.

The alternator light (Figure 33) should be off when the engine is running. If it is on, check and repair the charging system as needed.

The glow plug indicator light (Figure 33) glows when the glow plugs are operating.

Whenever the engine is shut off, engage the parking brake (Figure 33) to prevent accidental movement of the machine. To engage the parking brake, pull up on the lever. The engine stops if you press the traction pedal with the parking brake engaged.

Move the lift lever lock (Figure 33) rearward to prevent the cutting units from dropping.

The reel speed control is located under the console cover (Figure 34). To obtain the desired clip rate (reel speed), rotate the reel speed control knob to the appropriate height-of-cut setting and mower speed. Refer to Selecting the Clip Rate (Reel Speed).

Figure 34

1. Reel speed control
2. Backlap control

The backlap control is located under the console cover (Figure 34). Rotate the knob to R for backlapping and to F for mowing. Do not change the knob position while the reels are rotating.

The fuel gauge (Figure 35) registers the amount of fuel in the tank.

Figure 35

1. Fore and aft lever
2. Fuel gauge

Move the lever (Figure 35) on the side of the seat outward, slide the seat to the desired position, and release the lever to lock the seat into position.

A selection of Toro approved attachments and accessories is available for use with the machine to enhance and expand its capabilities. Contact your Authorized Service Dealer or authorized Toro distributor or go to www.Toro.com for a list of all approved attachments and accessories.

To ensure optimum performance and continued safety certification of the machine, use only genuine Toro replacement parts and accessories. Replacement parts and accessories made by other manufacturers could be dangerous, and such use could void the product warranty.

The engine is shipped with oil in the crankcase; however, the oil level must be checked before and after the engine is first started.

The crankcase capacity is approximately 3.8 L (4.0 US qt) with the filter.

Use high-quality engine oil that meets the following specifications:

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

• Preferred oil: SAE 15W-40 (above -17ºC (0ºF))

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

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

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

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

2. Remove the dipstick (Figure 36) and wipe it with a clean rag.

   

   Figure 36

   1. Dipstick

3. Push the dipstick down into the dipstick tube and ensure that it is seated fully, then pull the dipstick out and check the oil level.

4. If the oil level is low, remove the oil-fill cap (Figure 37) and gradually add small quantities of oil, checking the level frequently, until the level reaches the Full mark on the dipstick.

   

   Figure 37

   1. Oil-fill cap

5. Install the oil-fill cap and close the hood.

   Important: Keep the engine-oil level between the upper and lower limits on the oil gauge. Engine failure may occur as a result of overfilling or underfilling the engine oil.

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

The fuel tank capacity is approximately 28 L (7.5 US gallons).

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

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

Biodiesel Ready

This machine can also use a biodiesel blended fuel of up to B20 (20% biodiesel, 80% petrodiesel). The petrodiesel portion should be low or ultra low sulfur. Observe the following precautions:

• The biodiesel portion of the fuel must meet specification ASTM D6751 or EN14214.

• The blended fuel composition should meet ASTM D975 or EN590.

• Painted surfaces may be damaged by biodiesel blends.

• Use B5 (biodiesel content of 5%) or lesser blends in cold weather.

• Monitor seals, hoses, gaskets in contact with fuel as they may be degraded over time.

• Fuel filter plugging may be expected for a time after converting to biodiesel blends.

• Contact a distributor for more information on biodiesel blended fuel.

1. Clean the area around the fuel-tank cap (Figure 38).

   

   Figure 38

   1. Fuel-tank cap

2. Remove the fuel-tank cap.

3. Fill the tank to the bottom of the filler neck.

   Note: Do not overfill the fuel tank.

4. Install the cap.

5. Wipe up any spilled fuel.

Clean debris off the radiator daily (Figure 39). Clean the radiator hourly if conditions are extremely dusty and dirty; refer to Cleaning the Engine Cooling System.

Figure 39

1. Radiator

The cooling system is filled with a 50/50 solution of water and permanent ethylene glycol antifreeze. Check the coolant level at the beginning of each day before starting the engine.

The capacity of the cooling system is approximately 5.7 L (6 US qt).

1. Check the coolant level in the expansion tank (Figure 40).

   

   Figure 40

   1. Expansion tank

   Note: With a cold engine, the coolant level should be approximately midway between the marks on the side of the tank.

2. If the coolant level is low, remove the expansion tank cap and replenish the system. Do not overfill.

3. Install the expansion tank cap.

The hydraulic-fluid tank is filled at the factory with approximately 13.2 L (3.5 US gallons) of high-quality hydraulic fluid. Check the level of the hydraulic fluid before the engine is first started and daily thereafter.

The best time to check the hydraulic fluid is when the fluid is cold. The machine should be in its transport configuration. If the fluid level is below the Add mark on the dipstick, add fluid to bring the fluid level to the middle of the acceptable range. Do not overfill the tank. If the oil level is between the Full and the Add marks, no fluid addition is required.

The recommended replacement fluid is Toro Premium All Season Hydraulic Fluid (Available in 5-gallon pails or 55-gallon drums. Refer to the parts catalog or a Toro distributor for part numbers.)

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

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

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

Important: Many hydraulic fluids are almost colorless, making it difficult to spot leaks. A red dye additive for the hydraulic system fluid is available in 20 ml (2/3 fl oz) bottles. One bottle is sufficient for 15 to 22L (4 to 6 US gallons) of hydraulic fluid. Order Part No. 44-2500 from your Authorized Toro Distributor.

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

2. Clean the area around the filler neck and cap of the hydraulic-fluid tank (Figure 41) and remove the cap.

   

   Figure 41

   1. Hydraulic-fluid tank cap

3. Remove the 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 fluid level.

   Note: The fluid level should be within 6 mm (1/4 inch) of the mark on the dipstick.

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

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

The tires are over-inflated for shipping. Therefore, release some of the air to reduce the pressure. The proper air pressure in the tires is 97 to 124 kPa (14 to 18 psi).

Note: Maintain the recommended pressure in all tires to ensure a good quality of cut and proper machine performance.

Check the reel-to-bedknife contact even if the quality of cut had been acceptable previously. There must be light contact across the full length of the reel and bedknife; refer to Adjusting Reel to Bedknife in the cutting unit operator’s manual.

Torque the wheel nuts to 61 to 88 N∙m (45 to 65 ft-lb).

You may need to bleed the fuel system if any of the following situations have occurred; refer to Bleeding the Fuel System:

• It is the initial startup of a new engine.

• The engine has ceased running due to lack of fuel.

• Maintenance has been performed upon the fuel system components; e.g., filter replaced, etc.

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

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

3. Unlatch and raise the hood.

4. Open the air bleed screw on the fuel-injection pump (Figure 42).

   

   Figure 42

   1. Fuel-injection pump bleed screw

5. Turn the key in the ignition switch to the ON position. The electric fuel pump begins operation, thereby forcing air out around the air bleed screw.

   Note: Leave the key in the ON position until a solid stream of fuel flows out around the screw.

6. Tighten the screw and turn the key to off.

Note: Normally the engine should start after following the bleeding procedures above. However, if the engine does not start, air may be trapped between the injection pump and the injectors; refer to Bleeding the Fuel System.

1. Ensure that all bystanders are away from the area of operation, and keep hands and feet away from the cutting units.

2. While sitting on the seat, the engine must not start with either the cutting unit switch engaged or the traction pedal engaged. Correct the problem if it is not operating properly.

3. While sitting on the seat, put the traction pedal in neutral, disengage the parking brake, and set the cutting unit switch in the OFF position. The engine should start. Rise from the seat and slowly press the traction pedal, and the engine should shut off in 1 to 3 seconds. Correct the problem if it is not operating properly.

Note: The machine is equipped with an interlock switch on the parking brake. The engine shuts off if you press the traction pedal with the parking brake engaged.

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

• Tie the machine down securely.

In case of an emergency, the machine can be towed for a short distance; however, Toro does not recommend this as a standard procedure.

Important: Do not tow the machine faster than 3 to 4 km/h (2 to 3 mph) because it may damage the drive system. If the machine must be moved a considerable distance, transport it on a truck or trailer.

1. Locate the bypass valve on the pump (Figure 44) and rotate it 90°.

   

   Figure 44

   1. Bypass valve

2. Before starting the engine, close the bypass valve by rotating it 90° (1/4 turn). Do not start the engine while the valve is open.

The Standard Control Module is a potted electronic device produced in a one-size-fits-all configuration. The module uses solid state and mechanical components to monitor and control standard electrical features required for safe product operation.

The module monitors inputs including neutral, parking brake, PTO, start, backlap, and high temperature. The module energizes outputs including PTO, Starter, and ETR (energize to run) solenoid.

The module is divided into inputs and outputs. Inputs and outputs are identified by green LED indicators mounted on the printed circuit board.

The start circuit input is energized by 12 VDC. All other inputs are energized when the circuit is closed to ground. Each input has a LED that is illuminated when the specific circuit is energized. Use the input LEDs for switch and input circuit troubleshooting.

Output circuits are energized by an appropriate set of input conditions. The 3 outputs include PTO, ETR, and START. Output LEDs monitor relay condition indicating the presence of voltage at 1 of 3 specific output terminals.

Output circuits do not determine output device integrity, so electrical troubleshooting includes output LED inspection and conventional device and wire harness integrity testing. Measure the disconnected component impedance, the impedance through wire harness (disconnect at SCM), or by temporarily ”test energizing” the specific component.

The SCM does not connect to an external computer or handheld device, cannot be re-programmed, and does not record intermittent fault troubleshooting data.

The decal on the SCM only includes symbols. Three LED output symbols are shown in the output box. All other LEDs are inputs. The chart below identifies the symbols.

Figure 45

1. Inputs
2. Backlap
3. High temperature
4. In seat
5. PTO switch
6. Parking brake off
7. Neutral
8. PTO
9. Start
10. ETR
11. Power
12. Outputs

Here are the logical troubleshooting steps for the SCM device.

1. Determine the output fault you are trying to resolve (PTO, START, or ETR).

2. Move the key switch to the ON position and ensure that the red power LED is illuminated.

3. Move all the input switches to ensure that all LEDs change state.

4. Position the input devices at the appropriate position to achieve the appropriate output. Use the following logic chart to determine the appropriate input condition.

5. If the specific output LED is illuminated without the appropriate output function, check the output harness, connections, and component. Repair as needed.

6. If the specific output LED is not illuminated, check both fuses.

7. If the specific output LED is not illuminated and the inputs are in the appropriate condition, install a new SCM and determine if the fault disappears.

Each row (across) in the logic chart below identifies input and output requirements for each specific product function. The product functions are listed in the left column. The symbols identify the specific circuit condition including: energized to voltage, closed to ground, and open to ground.

• (–) Indicates a circuit closed to ground—LED ON.

• (O) Indicates a circuit open to ground or de-energized—LED OFF.

• (+) Indicates an energized circuit (clutch coil, solenoid, or start input)—LED ON.

• A blank indicates a circuit that is not involved with the logic.

To troubleshoot, turn on the key without starting the engine. Identify the specific function that does not work and work across the logic chart. Inspect the condition of each input LED’s to ensure that it matches the logic chart.

If the input LEDs are correct, check the output LED. If the output LED is illuminated but the device is not energized, measure the available voltage at the output device, the continuity of the disconnected device, and the potential voltage on the ground circuit (floating ground). Repairs will vary depending on your findings.