Troubleshooting - Toro 74590 Operator's Manual

Troubleshooting

Problem
The starter does not crank.
The engine overheats. g
The tractor does not drive.
The engine will not start, starts g
hard, or fails to keep running. h d f il t k
Possible Causes
1. The blade control (PTO) knob
is engaged.
2. The parking brake is not on.
3. The battery is dead.
4. The electrical connections are
corroded or loose.
5. A fuse is blown.
6. A relay or switch is damaged.
1. The engine load is excessive.
2. The oil level in the crankcase is
low.
3. The cooling fins and air
passages under the engine
blower housing are plugged.
1. The drive control is in the Push
position.
2. The traction belt is worn, loose,
or broken.
3. The traction belt is off the
pulley.
1. The operator is not seated.
i
2. The fuel tank is empty.
3. The air cleaner is dirty.
4. The spark plug wire is loose or
disconnected.
5. A spark plug is pitted, fouled, or
the gap is incorrect.
6. The choke is not closing.
7. There is dirt in the fuel filter.
8. The idle speed is too low or the
mixture is incorrect.
9. Dirt, water, or stale fuel is in the
fuel system.
10.The fuel shut-off valve is
closed.
1. Move the blade control (PTO)
knob to the Disengaged
position.
2. Set the parking brake.
3. Charge the battery.
4. Check the electrical
connections for good contact.
5. Replace the fuse.
6. Contact an Authorized Service
Dealer.
1. Reduce the ground speed.
2. Add oil to the crankcase.
3. Remove the obstruction from
the cooling fins and air
passages.
1. Move the drive control to the
Operate position.
2. Contact an Authorized Service
Dealer.
3. Contact an Authorized Service
Dealer.
1. Sit on the seat.
2. Fill the fuel tank with gasoline.
3. Clean or replace the air cleaner
element.
4. Install the wire on the spark
plug.
5. Install a new, correctly-gapped
spark plug.
6. Adjust the throttle cable.
7. Replace the fuel filter.
8. Adjust the carburetor idle
speed and idle mixture.
9. Contact an Authorized Service
Dealer.
10.Open the fuel shut-off valve.
38
Corrective Action