108
TROUBLESHOOTING
SYMPTOM: Engine turns over but fails to start
Possible causes What to do
1. Ignition switch, emergency cut-out
switch or tether switch is in the
OFF position.
Place all switches in the RUN or ON
position.
2. Mixture not rich enough to start
cold engine.
Check fuel tank level and check
starting procedure, particularly use of
the primer or the choke.
3. Flooded engine (spark plug wet
when removed).
Do not overprime. Remove wet spark
plug, turn ignition switch to OFF and
crank engine several times. Install
clean dry spark plug. Start engine
following usual starting procedure. If
engine continues to flood, see an
authorized dealer.
4. No fuel to the engine (spark plug
dry when removed).
Check fuel tank level; turn fuel valve
on if applicable; check fuel filter;
replace if clogged; check condition of
fuel and impulse lines and their
connections. A failure of the fuel
pump or carburetor has occurred.
Contact an authorized dealer.
5. Spark plug/ignition (no spark). Check that emergency cut-out switch
is at the ON position and the tether
cut-out switch cap is snapped over
the receptacle. If no spark appears,
replace spark plug. If trouble persists,
contact an authorized dealer.
6. Engine compression. As the engine is pulled over with the
rewind starter, “cycles” of resistance
should be felt as piston goes past top
dead center (each piston on twin-cyl-
inder engines). If no pulsating
resistance is felt, it suggests a major
loss of compression. Contact an
authorized dealer.
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