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troubleshooting
problem
Engine will not start
FUEL RELATED:
1. No fuel in tank or fuel valve closed.
2. Choke not in START position, cold engine.
3. Gasoline with more than 10% ethanol used.
4. Low quality or deteriorated, old gasoline.
5. Carburetor not primed.
6. Dirty fuel passageways.
7. Carburetor needle stuck. Fuel
8. Too much fuel in chamber. This can be
9. Clogged Fuel Filter.
IGNITION (SPARK) RELATED:
1. Engine switch in off position.
2. Spark plug cap not connected securely.
3. Spark plug electrode wet or dirty.
4. Incorrect spark plug gap.
5. Spark plug cap broken.
6. Circuit breaker tripped (electric
7. Incorrect spark timing or faulty ignition system.
COMPRESSION RELATED:
1. Cylinder not lubricated. Problem
2. Loose or broken spark plug. (Hissing noise
3. Loose cylinder head or damaged
4. Engine valves or tappets
OIL RELATED:
1. Low engine oil.
2. Engine mounted on slope,
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
Page 20
possible causes
(E15, E20, E85, etc.)
can be smelled in the air.
caused by the carburetor needle sticking.
start models only).
after long storage periods.
will occur when trying to start.)
head gasket. (Hissing noise will
occur when trying to start.)
mis‑adjusted or stuck.
triggering low oil shutdown.
For technical questions, please call 1-888-866-5797.
probable Solutions
FUEL RELATED:
1. Fill fuel tank with fresh 87+ octane stabilizer
treated unleaded gasoline and open fuel valve.
Do not use gasoline with more than
10% ethanol (e15, e20, e85, etc.).
2. Move Choke to START position.
3. Clean out ethanol rich gasoline from fuel
system. Replace components damaged by
ethanol. Use fresh 87+ octane stabilizer
treated unleaded gasoline only.
Do not use gasoline with more than
10% ethanol (e15, e20, e85, etc.).
4. Use fresh 87+ octane stabilizer treated
unleaded gasoline.
Do not use gasoline with more than
10% ethanol (e15, e20, e85, etc.).
5. Pull on Starter Handle to prime.
6. Clean out passageways using fuel additive.
Heavy deposits may require further cleaning.
7. Gently tap side of carburetor float
chamber with screwdriver handle.
8. Turn Choke to RUN position. Remove spark
plug and pull the start handle several times
to air out the chamber. Reinstall spark
plug and set Choke to START position.
9. Replace Fuel Filter.
IGNITION (SPARK) RELATED:
1. Turn engine switch to on position.
2. Connect spark plug cap properly.
3. Clean spark plug.
4. Correct spark plug gap.
5. Replace spark plug cap.
6. Reset circuit breaker. Check wiring and
starter motor if breaker continues to trip.
7. Have qualified technician diagnose/
repair ignition system.
COMPRESSION RELATED:
1. Pour tablespoon of oil into spark plug hole.
Crank engine a few times and try to start again.
2. Tighten spark plug. If that does not work,
replace spark plug. If problem persists,
may have head gasket problem, see #3.
3. Tighten head. If that does not remedy
problem, replace head gasket.
4. Have qualified technician diagnose/
repair ignition system.
OIL RELATED:
1. Fill engine oil to proper level.
Check engine oil before EVERY use.
2. Operate engine on level surface.
Check engine oil level.
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