Troubleshooting - Toro 38700 Service Manual

SPECIFICATIONS & MAINTENANCE

Troubleshooting

IMPORTANT
It is essential that all operator safety mechanisms be connected and in proper operating condition prior to use. When a
problem occurs, do not overlook the simple causes. For example: starting problems could be caused by an empty fuel
tank.The following table lists some of the common causes of trouble. Do not attempt to service or replace major items or
any items that call for special timing of adjustments procedures (such as valves, governor, etc.).
NOTE
When disconnecting electrical connectors, do not pull on the wires to separate the connectors.
Problem
The engine will not start,
starts hard, or fails to keep
running.
The engine loses power.
The broom does not clean
the surface.
The broom does not rotate.
The machine pulls left
or right.
The machine does not drive.
2-12
Possible Cause
1. The fuel tank is empty.
2. The fuel shutoff valve is closed.
3. The throttle and choke are not in
the correct position.
4. There is dirt in fuel valve.
5. The fuel cap vent is blocked.
6. Dirt, water, or stale fuel is in the
fuel system.
7. The air cleaner is dirty.
8. The spark plug is faulty.
9. The spark plug wire is not
connected.
1. The engine load is excessive.
2. The air cleaner is dirty.
3. The oil level in the crankcase is
incorrect.
4. There is dirt in fuel tank filter.
5. Dirt, water, or stale fuel is in the
fuel system.
1. The broom height is incorrect.
2. The tire pressure in the drive
tires is not correct.
3. You are cleaning too much debris
at one time.
1. The broom is clogged.
2. The broom drive lever is not engaged.
3. The broom drive belt is slipping.
4. The belt is broken.
5. The shear pin is broken.
1. The tire pressure in the drive tires
is not correct.
1. The drive belt is worn, loose or broken.
2. The drive belt is off a pulley.
Corrective Action
1. Fill the fuel tank.
2. Open the fuel shutoff valve.
3. Be sure the throttle control is
midway between the Slow and Fast
positions, and the choke is in the
On position for a cold engine or the
Off position for a warm engine.
4. Clean the fuel valve screen and cup.
5. Clean the fuel cap vent.
6. Clean or replace the air cleaner
element.
7. Clean, adjust or replace the spark plug.
8. Check the spark plug wire connection.
1. Reduce the ground speed or adjust
the broom.
2. Clean or replace the air cleaner
element.
3. Check the oil level in the crankcase.
4. Clean the fuel tank filter.
1. Adjust the broom height.
2. Adjust the tire pressure in the
drive tires.
3. Slow down and clear smaller areas
of debris.
1. Unclog the broom.
2. Engage the broom drive lever.
3. Adjust or replace the belt.
4. Replace the belt.
5. Replace the shear pin.
1. Adjust the tire pressure in the
drive tires.
1. Install a new belt.
2. Replace or adjust the belt.
Walk-Behind Rotary Broom Service Manual