Troubleshooting - Toro TX 525 Operator's Manual

Troubleshooting

Problem
The starter does not crank.
The engine cranks but does not start.
Possible Cause
1. The electrical connections are
corroded or loose.
2. A fuse is loose or blown.
3. The battery is discharged.
4. The relay or switch is damaged.
5. A starter or starter solenoid is
damaged.
6. Internal engine components have
seized.
1. The starting procedure is incorrect.
2. The fuel tank is empty.
3. The fuel-shutoff valve is closed.
4. Dirt, water, stale fuel, or incorrect fuel
is in the fuel system.
5. The fuel line is clogged.
6. There is air in the fuel.
7. The glow plugs are inoperative.
8. The cranking speed is slow.
9. The air-cleaner filter is dirty.
10. The fuel filter is clogged.
11. The improper fuel grade for cold
weather is in the machine.
12. There is low compression.
13. The injection nozzles are damaged.
14. The injection pump timing is incorrect.
15. The injection pump is damaged.
16. The ETR solenoid is damaged.
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Corrective Action
1. Check the electrical connections for
good contact.
2. Connect or replace the fuse.
3. Charge the battery or replace it.
4. Contact your Authorized Service
Dealer.
5. Contact your Authorized Service
Dealer.
6. Contact your Authorized Service
Dealer.
1. Use the correct starting procedure.
2. Fill the tank with fresh fuel.
3. Open the fuel-shutoff valve.
4. Drain and flush the fuel system; add
fresh fuel.
5. Clean or replace the fuel line.
6. Bleed the nozzles and check for air
leaks at the fuel hose connections
and fittings between the fuel tank and
engine.
7. Check the fuse, glow plugs, and wiring.
8. Check the battery, oil viscosity, and
starting motor (contact your Authorized
Service Dealer).
9. Service the air filter.
10. Replace the fuel filter.
11. Drain the fuel system and replace
the fuel filter. Add fresh fuel of
proper grade for ambient temperature
conditions. You may need to warm the
entire traction unit.
12. Contact your Authorized Service
Dealer.
13. Contact your Authorized Service
Dealer.
14. Contact your Authorized Service
Dealer.
15. Contact your Authorized Service
Dealer.
16. Contact your Authorized Service
Dealer.