Troubleshooting - Toro 72907 Operator's Manual

Troubleshooting

Problem
The malfunction-indicator light (MIL)
comes on.
The starter does not crank.
The engine does not start, starts hard, or
fails to keep running.
Possible Cause
1. The engine is too hot.
2. There is old fuel in the fuel tank.
3. The fuel-shutoff valve is not open
completely.
4. The air cleaner is dirty.
5. The battery is not charged.
6. Incorrect fuel filters are being used or
the fuel filters are dirty.
7. The connections to the sensors
electronic-control unit (ECU) and fuel
injectors are not secured properly.
8. There is low voltage from the battery.
9. A fuse is blown.
1. The blade-control switch is engaged.
2. The parking brake is disengaged.
3. The motion-control levers are not in
the N - position.
EUTRAL LOCK
4. You are not sitting in the operator's
seat.
5. The battery is dead.
6. The electrical connections are
corroded or loose.
7. A fuse is blown.
8. A relay or switch is damaged.
1. The fuel tank is empty.
2. The fuel-shutoff valve is closed.
3. The oil level in the crankcase is low.
4. The throttle is not in the correct
position.
5. There is dirt in the fuel filter.
6. There is dirt, water, or stale fuel is in
the fuel system.
7. The air cleaner is dirty.
8. The seat switch is not functioning
properly.
9. The electrical connections are
corroded, loose, or damaged.
10. The relay or switch is worn or
damaged.
11. The spark plug is fouled or improperly
gapped.
12. The spark-plug wire is not connected.
80
Corrective Action
1. Shut off the engine and let it cool.
2. Use new fuel.
3. Open the fuel-shutoff valve.
4. Make sure that the air cleaner and
precleaner are clean. Replace if
necessary.
5. Charge or replace the battery.
6. Contact an Authorized Service Dealer.
7. Contact an Authorized Service Dealer.
8. Ensure that you are using a good 12 V
battery and that it is fully charged.
9. Check and replace any blown fuses.
1. Disengage the blade-control switch.
2. Engage the parking brake.
3. Move the motion-control levers
outward to the N -
EUTRAL
4. Sit on the operator's seat.
5. Charge the battery.
6. Check the electrical connections for
good contact.
7. Replace the fuse.
8. Contact an Authorized Service Dealer.
1. Fill the fuel tank.
2. Open the fuel-shutoff valve.
3. Add oil to the crankcase.
4. Be sure that the throttle control is
midway between the S
LOW
positions.
5. Replace the fuel filter.
6. Contact an Authorized Service Dealer.
7. Clean or replace the air-cleaner
element.
8. Check the seat-switch indicator.
Replace the seat if necessary.
9. Check the electrical connections
for good contact. Clean the
connector terminals thoroughly with
electrical-contact cleaner, apply
dielectric grease, and make the
appropriate connections.
10. Contact an Authorized Service Dealer.
11. Adjust or replace the spark plug.
12. Check the spark-plug wire connection.
position.
LOCK
and F
AST