Trouble recovery
65
Engine runs irregu-
larly or stalls
Fuel
Empty
Refill as soon as pos-
sible
Stale or contaminat-
ed
Have serviced by
Yamaha dealer
—
Too much oil in fuel
mixing ratio
Correct fuel-to-oil ra-
tio to 50:1
Choke
Knob is left pulled
Push fully in
Fuel filter
Clogged or water
pooled
Have serviced by
Yamaha dealer
Fuel tank
Water or dirt present
Have serviced by
Yamaha dealer
—
Spark plug
Fouled or defective
Replace
Incorrect heat range
Replace
Gap incorrect
Replace
Spark plug
cap
Not connected or
loose
Connect properly
Cracked, torn or
damaged
Have serviced by
Yamaha dealer
—
Electrical wir-
ing
Loose electrical con-
nections
Have serviced by
Yamaha dealer
—
Carburetor
Incorrect idle adjust-
ment
Have serviced by
Yamaha dealer
—
Clogged
Have serviced by
Yamaha dealer
Watercraft slow or
loses power
Cavitation
Jet intake clogged
Clean
Impeller damaged or
worn
Have serviced by
Yamaha dealer
Engine over-
heated
Jet intake clogged
Clean
Fuel filter
Clogged
Have serviced by
Yamaha dealer
Spark plug
Fouled or defective
Replace
Incorrect heat range
Replace
Gap incorrect
Replace
Spark plug
caps
Not connected or
loose
Connect properly
Fuel
Stale or contaminat-
ed
Have serviced by
Yamaha dealer
—
TROUBLE
POSSIBLE CAUSE
REMEDY
PAGE
UF4D70E0.book Page 65 Wednesday, May 7, 2014 10:53 AM