TROUBLESHOOTING
problem possible Causes probable Solutions
Engine misfires 1. Spark plug cap loose.
2. Incorrect spark plug gap or
damaged spark plug.
3. Defective spark plug cap.
5. Incorrect compression.
1. Check cap and wire connections.
2. Re-gap or replace spark plug.
3. Replace spark plug cap.
4. Use only fresh 87+ octane stabilizer-treated unleaded
gasoline. Do not use gasoline with more than 10%
ethanol (E1
5, E20, E85, etc.).
5. Diagnose and repair compression. (Use Engine will not
start: COM PRESSION RELATED section.)
Engine stops suddenly
1. Fuel tank empty or full of impure or
low quality gasoline.
2. Low oil shutdown.
3. Defective fuel tank cap creating
vacuum, preventing proper fuel flow.
4. Faulty magneto.
5. Disconnected or improperly
connected spark plug cap.
1. Fill fuel tank with fresh 87+ octane stabiliz
er-treated
unleaded gasoline. Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
2. Fill engine oil to proper level. Check engine oil before
EVERY use.
3. Test/replace fuel tank cap.
4. Have qualified technician service magneto.
5. Secure spark plug cap.
Engine stops when under
heavy load
1. Dirty air filter
2. Engine running cold.
1. Clean element.
Engine knocks
1. Old or low
quality gasoline.
2. Engine overloaded.
3. Incorrect spark timing, deposit
buildup, worn engine, or other
mechanical problems.
1. Fill fuel tank with fresh 87+ octane stabilizer-treated
unleaded gasoline. Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
2. Do not exceed equipment’s load rating.
3. Have qualified technician diagnose and service engine.
Engine backfires
1. Impure
or low quality gasoline.
2. Engine too cold.
3. Intake valve stuck or overheated
engine.
4. Incorrect timing.
1. Fill fuel tank with fresh 87+ octane stabilizer-treated
unleaded gasoline. Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
2. Use cold weather fuel and oil additives to prevent
backfiring.
3. Have qualified technician diagnose and service engine.
4. Check engine t
iming.
Attached device doesn’t
have power
1. Device not plugged in properly.
2. Circuit Breaker tripped.
1. Turn off and unplug the device, then plug it back in
again and turn on.
2. Turn off and unplug device, reset Circuit Breaker, plug
in device and turn on.
Attached device begins to
operate abnormally
1. Problem with device.
2. Rated load capacity exceeded.
1. Immediately unplug device. Have device repair
ed by a
qualified technician, or replace device.
2. Lower the number of items plugged into the generator
to stay within the rated capacity, or use a more powerful
generator.
3. Product needs service.
4. Old or low quality gasoline.
TROUBLESHOOTING
18
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