
Troubleshooting
9
41
Problem
Cause
Remedy
Engine fails to start
PTO engaged.
1.
Parking brake not engaged.
2.
Spark plug wire(s) disconnected.
3.
Throttle control lever not in correct starting
4.
position.
Fuel tank empty, or stale fuel.
5.
Blocked fuel line.
6.
Air or Water is in the fuel sytem.
7.
Faulty spark plug(s).
8.
Defective starter solenoid.
9.
Engine flooded.
10.
Place PTO knob in disengaged (OFF) position.
1.
Engage parking brake.
2.
Connect wire(s) to spark plug(s).
3.
Place throttle lever in the fast position.
4.
Fill tank with clean, fresh (less than 30 days
5.
old) gas.
Clean fuel line and replace fuel filter.
6.
Pump the manual prime on the fuel pump.
7.
Clean, adjust gap or replace plug(s).
8.
Replace the solenoid.
9.
Crank engine with throttle in FAST position.
10.
Engine difficult to start
Plugged fuel filter.
1.
Engine oil viscosity too heavy.
2.
Loose or corroded electrical connections.
3.
Stale or improper fuel.
4.
Clean the fuel filter.
1.
Replace the oil with the proper viscosity.
2.
Tighten and/or clean electrical connections.
3.
Fill tank with clean, fresh (less than 30 days
4.
old) gas.
Engine misses under load
Stale or dirty fuel.
1.
Plugged fuel filter.
2.
Fill tank with clean, fresh (less than 30 days
1.
old) gas.
Clean the fuel filter.
2.
Engine vapor locks
Poor quality fuel.
1.
Fuel tank vent plugged.
2.
Dirt in fuel filter.
3.
Fill tank with clean, fresh (less than 30 days
1.
old) gas.
Clear tank vent.
2.
Clean and/or replace fuel filter.
3.
Engine runs unevenly
Loose electrical connections.
1.
Throttle cable sticking.
2.
Fuel line or fuel filter plugged.
3.
Stale or dirty fuel.
4.
Improper fuel.
5.
Air cleaner clogged.
6.
Tighten electrical connections.
1.
See an authorized service dealer.
2.
Clear the fuel line and/or clean the fuel filter.
3.
Fill tank with clean, fresh (less than 30 days
4.
old) gas.
Replace the fuel with the proper fuel.
5.
Clean or replace the air cleaner.
6.
Engine overheats
Engine oil level low.
1.
Air flow restricted.
2.
Fill crankcase with proper amount and
1.
weight of oil.
Clean grass clippings and debris from around
2.
the engine’s cooling fins and blower housing.
Engine hesitates at high
RPM
Spark plug(s) gap too close.
1.
Remove spark plug(s) and reset the gap.
1.