Troubleshooting - Toro 74946 Operator's Manual

Troubleshooting

Problem
The oil-temperature light is on and the
engine rpm is low.
The oil-pressure light is on and the engine
rpm is low.
The malfunction indicator light (MIL)
comes on.
The starter does not crank.
Possible Cause
1. The engine-control unit has limited
engine rpm, known as "limp" mode.
1. The engine-control unit has limited
engine rpm, known as "limp" mode.
1. The engine is too hot.
2. There is old gas in the gas 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 (PTO) is
engaged.
2. The parking brake is not engaged.
3. The motion-control levers are not in
the N - position.
EUTRAL LOCK
4. The operator is not seated.
5. The battery is dead.
6. The electrical connections are
corroded or loose.
7. The fuse is blown.
8. The relay or switch is worn or
damaged.
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Corrective Action
1. Check the engine-oil level. If the level
is above the "add" line, contact an
Authorized Toro Service Dealer.
1. Let the engine cool and check the
engine-oil level. If the level is above
the "add" line, contact an Authorized
Toro Service Dealer.
1. Turn the engine off and let it cool.
2. Use new gas.
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 a good 12–volt battery is being
used and is fully charged.
9. Check and replace any blown fuses.
1. Move the blade-control switch (PTO)
to the disengaged position.
2. Set the parking brake.
3. Ensure that the motion-control levers
are in the N -
EUTRAL LOCK
4. Sit on the seat.
5. Charge the battery.
6. Check the electrical connections for
good contact.
7. Replace the fuse.
8. Contact an Authorized Service Dealer.
position.