Trouble shooting
Problem
Check
Engine cranks,
Fuel at
start hard or
carburetor.
does
not start.
Fuel at cylinder.
Spark at end of
plug wire.
Spark at plug.
Engine runs,
Air filter.
but
Fuel filter.
dies or does
not
Fuel vent.
accelerate
properly.
Spark plug.
Carburetor.
Cooling system.
Engine does
N/A
not
crank
Warning! Fuel vapors are extremely flammable and may cause fire and/or
explosion. Never test for ignition spark by grounding spark plug near cylinder
plug hole, otherwise serious personal injury may result.
Status
Cause
No fuel at
Fuel strainer clogged.
carburetor.
Fuel line clogged.
Carburetor.
No fuel at cylinder.
Carburetor.
Muffler wet with
Fuel mixture too
fuel.
rich.
No spark.
Stop switch off.
Electrical problem.
Interlock switch.
No spark.
Spark gap
incorrect.
Covered with
carbon.
Fouled with fuel.
Plug defective.
Air filter dirty.
Normal wear.
Fuel filter dirty
Contaminants or
residues in fuel.
Fuel vent plugged.
Contaminants or
residues in fuel.
Plug dirty or worn.
Normal wear.
Improper
Vibration
adjustment.
Cooling system
Extended
dirty or plugged.
operation in dusty
or dirty locations.
N/A
Internal engine
problem
55
Remedy
Clean or replace.
Clean or replace.
See local dealer
See local dealer
Open choke.
Clean or replace
air filter.
Adjust carburetor.
See local dealer
Turn switch to On.
See address on
the warranty card.
See local dealer
Adjust to 0.65 mm
(0".026).
Clean or replace.
Clean or replace.
Replace plug.
Clean or replace.
Replace.
Clean or replace.
Clean and adjust
or replace.
Adjust.
Clean.
See local dealer