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11
TROUBLESHOOTING
ENOM01307-0
If you encounter a problem, consult the check list below to determine the cause and to
take the proper action.
An authorized dealer will always be happy to provide any assistance and information.
Engine failing to start
Engine starting but stopping soon
Poor idling
Engine speed abnormally high
Engine speed abnormally low
High engine speeds not possible
Overheating of engine
Possible cause
FUEL SYSTEM
zz Empty fuel tank
zz Incorrect connection of fuel system
zzz zzzAir entering fuel line
zzz zzzDeformed or damaged fuel pipe
zzz zzzClosed air vent on fuel tank
zzz zzzClogged fuel filter, fuel pump, or carburetor
z zzzUse of improper engine oil
z z zzzUse of improper gasoline
zzzExcessive oil in mixture
z Shortage of oil in mixture
z Exessive supply of fuel
zzz zzzPoor carburetor adjustment
ELECTRICAL SYSTEM
zz zzzSpark plug other than specified
zzz zz Dirt, soot, etc. on spark plugs
zzz zz No spark or weak spark
z Short circuit of engine stop switch
zzzzIgnition timing incorrect
z Lock plate not fitted to stop switch
OTHERS
z Sheard shearpin
zzzInsufficient cooling water flow, clogged or defective pump
zzzCavitation or ventilation
zzzzIncorrect propeller selection
zzzzzDamaged and bent propeller
zzzImproper thrust rod position
zzzzUnbalanced load on boat
zzzzTransom too high or too low
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