Troubleshooting - Toro TX 427 Operator's Manual

Troubleshooting

Problem
The engine does not start, starts hard, or
fails to keep running.
The engine loses power.
The engine overheats.
There is abnormal vibration.
The machine does not drive.
Possible Cause
1. The starting procedure is incorrect.
2. The fuel tank is empty.
3. The choke is not engaged.
4. The air cleaner is dirty.
5. The spark plug wires are loose or
disconnected.
6. The spark plugs are pitted, fouled, or
the gap is incorrect.
7. There is dirt in the fuel filter.
8. Dirt, water, stale fuel, or incorrect fuel
is in the fuel system.
1. The engine load is excessive.
2. The high-idle speed is low.
3. The air cleaner is dirty.
4. The engine-oil level is incorrect.
5. The cooling fins and air passages
under the engine blower housing are
plugged.
6. The spark plugs are pitted, fouled, or
the gap is incorrect.
7. There is dirt in the fuel filter.
8. Dirt, water, stale fuel, or incorrect fuel
is in the fuel system.
1. The engine load is excessive.
2. The high-idle speed is low.
3. The engine-oil level is incorrect.
4. The cooling fins and air passages
under the engine blower housing are
plugged.
1. The engine mounting bolts are loose.
1. The parking brake is engaged.
2. The hydraulic-fluid level is low.
3. The hydraulic system is damaged.
48
Corrective Action
1. Use the correct starting procedure.
2. Fill the tank with fresh fuel.
3. Engage the choke.
4. Clean or replace the air-cleaner
elements.
5. Install the wires on the spark plugs.
6. Install new, correctly gapped spark
plugs.
7. Replace the fuel filter.
8. Contact your Authorized Service
Dealer.
1. Reduce the load; use a lower ground
speed.
2. Contact your Authorized Service
Dealer.
3. Clean or replace the air cleaner
elements.
4. Fill or drain to the Full mark.
5. Remove any obstructions from the
cooling fins and air passages.
6. Install new, correctly gapped spark
plugs.
7. Replace the fuel filter.
8. Contact your Authorized Service
Dealer.
1. Reduce the load; use a lower ground
speed.
2. Contact your Authorized Service
Dealer.
3. Fill or drain to the Full mark.
4. Remove any obstructions from the
cooling fins and air passages.
1. Tighten the engine mounting bolts.
1. Disengage the parking brake.
2. Add hydraulic fluid to the reservoir.
3. Contact your Authorized Service
Dealer.