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Page 15SKU 97964 For technical questions, please call 1-800-444-3353.
Troubleshooting
Problem Possible Cause Possible Solution
Engine will not
start
FUEL RELATED:
No fuel in tank or fuel valve closed.1.
Choke not in start position, 2.
especially with cold engine.
Low quality or deteriorated, old 3.
gasoline.
Carburetor not primed. 4.
Dirty fuel passageways blocking 5.
fuel ow.
Carburetor needle stuck. Fuel 6.
can be smelled in the air.
Too much fuel in chamber. This 7.
can be caused by the carburetor
needle sticking.
FUEL RELATED:
Fill fuel tank and open fuel valve.1.
Move choke to start position if engine 2.
is cold.
Use only fresh 89+ octane unleaded 3.
gasoline.
Prime carburetor by pressing priming 4.
bulb specied number of times
(if equipped). Replace broken or
damaged bulb.
Clean out passageways using fuel 5.
additive. Heavy deposits may require
further cleaning.
Gently tap side of carburetor oat 6.
chamber with screwdriver handle.
Turn choke to run position. Remove 7.
spark plug and pull the start handle
several times to air out the chamber.
Reinstall spark plug and set choke to
start position.
IGNITION (SPARK) RELATED:
Spark plug wire not connected 1.
securely.
Spark plug electrode wet or dirty.2.
Incorrect spark plug gap.3.
Spark plug wire or spark plug 4.
broken.
Incorrect spark timing or faulty 5.
ignition system.
IGNITION (SPARK) RELATED:
Connect spark plug wire properly. 1.
Clean spark plug.2.
Correct spark plug gap.3.
Replace spark plug wire and/or spark 4.
plug.
Have qualied technician diagnose/5.
repair ignition system.
COMPRESSION RELATED:
Cylinder not lubricated. This can 1.
be a problem after long storage
periods.
Loose or broken spark plug. 2.
(Hissing noise will occur when
trying to start.)
Loose cylinder head or damaged 3.
head gasket. (Hissing noise will
occur when trying to start.)
Engine valves or tappets 4.
misadjusted or stuck.
COMPRESSION RELATED:
Pour tablespoon of oil into spark plug 1.
hole. Crank engine a few times and
try to start again.
Tighten spark plug. If that does not 2.
work, replace spark plug. If problem
persists, may have head gasket
problem, see #3.
Tighten head. If that does not 3.
remedy problem, replace head
gasket.
Adjust valve clearance. If that does 4.
not work, clean or replace valves/
tappets.
Follow all safety precautions whenever diagnosing or servicing the
equipment or engine.