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TROUBLE
Engine runs irregu-
larly or stalls
Warning light or in-
dicator blinks
Watercraft slow or
loses power
POSSIBLE CAUSE
Fuel
Empty
Stale or contaminat-
ed
Fuel tank
Water or dirt present
Spark plug
Fouled or defective
Incorrect heat range
Gap incorrect
Spark plug
Loose
cap
Cracked, torn, or
damaged
Electrical wir-
Loose connection
ing
Fuel injec-
Faulty or clogged in-
tion system
jectors
Fuel level
Empty
Engine over-
Jet intake clogged
heated
Check engine
Faulty sensors
warning
Cavitation
Jet intake clogged
Impeller damaged or
worn
Engine over-
Engine speed reduc-
heat warning
tion control activated
Oil pressure
Engine speed reduc-
warning
tion control activated
Spark plug
Fouled or defective
Incorrect heat range
Gap incorrect
Spark plug
Loose
caps
Electrical wir-
Loose connection
ing
Fuel
Stale or contaminat-
ed
Air filter
Clogged
Oil buildup
Trouble recovery
REMEDY
Refill as soon as pos-
sible
Have serviced by
Yamaha dealer
Have serviced by
Yamaha dealer
Replace
Replace
Adjust
Connect properly
Replace
Tighten or connect
properly
Have serviced by
Yamaha dealer
Refill as soon as pos-
sible
Clean
Have serviced by
Yamaha dealer
Clean
Have serviced by
Yamaha dealer
Clean jet intake and
cool engine
Add oil
Replace
Replace
Adjust
Connect properly
Tighten or connect
properly
Have serviced by
Yamaha dealer
Clean or replace
Replace
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