Harbor Freight Tools 69672 Troubleshooting cont, Setup, Use Engine will not start, Problem, Page

Troubleshooting (cont.)

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

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

Page 18	For Generator technical questions, please call 1-800-444-3353.	Item 69672 / 69674
	For Engine technical questions, please call 1-800-520-0882.