Troubleshooting - Toro 74592 Operator's Manual

Troubleshooting

Problem
The starter does not crank.
The engine overheats.
The machine does not drive.
The engine will not start, starts hard, or
fails to keep running.
The engine loses power.
Possible Cause
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.
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. The engine load is excessive.
2. The air cleaner is dirty.
3. The oil level in the crankcase is low.
4. The cooling fins and air passages
under the engine blower housing are
plugged.
5. The spark plug is pitted, fouled, or the
gap is incorrect.
6. The vent hole in the fuel cap is plugged.
7. There is dirt in the fuel filter.
8. Dirt, water, or stale fuel is in the fuel
system.
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Corrective Action
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 engine 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.
1. Reduce your ground speed.
2. Clean the air cleaner element.
3. Add engine oil to the crankcase.
4. Remove the obstruction from the
cooling fins and air passages.
5. Install a new, correctly-gapped spark
plug.
6. Clean or replace the fuel cap.
7. Replace the fuel filter.
8. Contact an Authorized Service Dealer.