Predator generators 6500 Watt Owner's Manual & Safety Instructions page 18

Troubleshooting (cont.)
Problem
Engine misfires 1. Spark plug cap loose.
2. Incorrect spark plug gap or
damaged spark plug.
3. Defective spark plug cap.
4. Old or low quality gasoline.
5. Incorrect compression.
Engine stops 1. Low oil shutdown.
suddenly
2. Fuel tank empty or full of impure or low
quality gasoline.
3. Defective fuel tank cap creating
vacuum, preventing proper fuel flow.
4. Faulty magneto.
5. Disconnected or improperly
connected spark plug cap.
Engine stops when 1. Dirty air filter.
under heavy load
2. Engine running cold.
Engine knocks 1. Old or low quality gasoline.
2. Engine overloaded.
3. Incorrect spark timing, deposit buildup,
worn engine, or other mechanical problems.
Engine backfires 1. Impure or low quality gasoline.
2. Engine too cold.
3. Intake valve stuck or overheated engine.
4. Incorrect timing.
Product doesn't 1. Product not plugged in properly.
have power.
2. Circuit Breaker tripped.
3. Product needs service.
Product begins to 1. Problem with appliance.
operate abnormally.
2. Rated load capacity exceeded.
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
For Generator technical questions, please call 1-800-444-3353.
Page 18
Possible Causes
For Engine technical questions, please call 1-800-520-0882.
Probable Solutions
1. Check wire connections.
2. Re-gap or replace spark plug.
3. Replace spark plug cap.
4. Use only fresh 87+ octane unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
5. Diagnose and repair compression.
(Use Engine will not start:
COMPRESSION RELATED section.)
1. Fill engine oil to proper level. Check
engine oil before EVERY use.
2. Fill fuel tank with fresh 87+ octane
unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).
3. Test/replace fuel tank cap.
4. Have qualified technician service magneto.
5. Secure spark plug cap.
1. Clean or replace element.
2. Allow engine to warm up prior
to operating equipment.
1. Fill fuel tank with fresh 87+ octane
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.
1. Fill fuel tank with fresh 87+ octane
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 timing.
1. Turn off and unplug the product, then
plug it back in again and turn on.
2. Turn off and unplug product, Reset Circuit
Breaker. Plug in product and turn on.
3. Have product repaired.
1. Immediately unplug appliance. Have
appliance repaired by a qualified
technician, or replace appliance.
2. Lower the number of items plugged into the
generator to stay within the rated capacity,
or use a more powerful generator.
Item 69672 / 69674