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TROUBLESHOOTING
PROBLEM
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
was used.
4. Low quality or old gasoline.
5. Dirty fuel passageways.
6. Carburetor needle stuck. Fuel can be
smelled in the air.
7. Too much fuel in chamber.
8. Clogged fuel filter.
ENGINE
WILL NOT
IGNITION (SPARK RELATED):
START
1. Power 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.
7. Incorrect spark timing or faulty ignition
system.
COMPRESSION RELATED:
1. Cylinder not lubricated. Can happen after
long storage periods.
2. Loose or broken spark plug. (hissing
noise when trying to start.)
3. Loose cylinder head or damaged head
gasket. (hissing noise when trying to
start.)
4. Engine valves or or tappets misaligned
or stuck.
ENGINE OIL RELATED:
1. Low engine oil
2. Unit on slope, triggering the low oil
shutdown.
SPARK ARRESTOR:
1. Low engine oil
POSSIBLE CAUSE
SOLUTION
FUEL RELATED:
1. Fill fuel tank with fresh 87+ octane
gasoline and open the 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. Fill fuel tank with fresh 87+ octane
gasoline and open the fuel valve. Do not
use gasoline with more than 10% ethanol
(E15,E20,E85 etc.)
4. Fill fuel tank with fresh 87+ octane
gasoline and open the fuel valve. Do not
use gasoline with more than 10% ethanol
(E15,E20,E85 etc.)
5. Clean out passageways using fuel additive.
Heavy deposits may require further
cleaning.
6. Gentle tap side of carburetor flat chamber
with screwdriver handle.
7. Turn choke to RUN position. Remove spark
plug and pull the recoil handle serveral
times to air out the chamber. Reinstall
spark plug and set the choke to START.
8. Replace fuel filter.
IGNITION (SPARK RELATED):
1. Turn power switch ON
2. Reconnect spark plug cap
3. Clean spark plug
4. Correct the spark plug cap.
5. Replace the spark plug cap.
6. Reset circuit breaker. Check wiring and
start motor if breaker continues to trip.
7. Have qualified repair technician diagnose/
repair ignition system.
COMPRESSION RELATED:
1. Pour tablespoon of oil into sparkplug hole.
Crank engine a few times and try to start.
2. Tighten spark plug. If that does not work,
replace spark plug.
3. Tighten head, if that doesn't work, replace
the head gasket.
4. Have qualified repair technician adjust/
repair valves and tappets.
ENGINE OIL RELATED:
1. Fill engine oil to proper level. Check engine
oil before EVERY use.
2. Operate unit on a level surface. Check
engine oil level.
SPARK ARRESTOR:
1. Clean and replace spark arrestor.
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