Troubleshooting - Toro 73547 Wheel Horse 520Lxi Operator's Manual

Troubleshooting

PROBLEM
The starter does not crank.
The engine cranks, but will not
start.
POSSIBLE CAUSES
1. The PTO is ON.
2. The brake is not depressed or
the parking brake is not on.
3. The operator is not seated.
4. The electrical connections are
corroded or loose.
5. A fuse is blown or loose.
6. The relay or switch is
defective.
7. The battery is discharged.
8. The safety interlock system is
malfunctioning.
9. A faulty starter or starter
solenoid.
10. Seized internal engine
components.
1. Incorrect starting procedure.
2. The fuel tank is empty.
3. The fuel shut–off valve is
closed.
4. Dirt, water or stale fuel is in
the fuel system.
5. Clogged fuel line.
6. The spark plug lead is
disconnected.
7. The kill relay is not energized.
8. A spark plug is faulty.
9. The ignition module is faulty.
CORRECTIVE ACTION
1. Move the PTO to OFF.
2. Set the parking brake.
3. Sit on the seat.
4. Check the electrical
connections for good contact.
5. Correct or replace the fuse.
6. Contact your Authorized
Service Dealer.
7. Charge the battery or replace
it.
8. Contact your Authorized
Service Dealer.
9. Contact your Authorized
Service Dealer.
10. Contact your Authorized
Service Dealer.
1. Refer to Starting and
Stopping the Engine, page
16.
2. Fill with fresh fuel.
3. Open the fuel shut–off valve.
4. Drain and flush the fuel
system; add fresh fuel.
5. Clean or replace.
6. Reconnect the spark plug.
7. Contact your Authorized
Service Dealer.
8. Replace the spark plug.
9. Contact your Authorized
Service Dealer.
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