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UF4D13E0.book Page 69 Wednesday, March 15, 2017 11:08 AM

Trouble recovery

TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine runs irregu- Fuel Empty Refill as soon as pos- 32
larly or stalls sible
Stale or contaminat- Have serviced by —
ed Yamaha dealer
Too much oil in fuel Correct fuel-to-oil ra- 31
mixing ratio tio to 50:1
Choke Knob is left pulled Push fully in 25
Fuel filter Clogged or water Have serviced by 65
pooled Yamaha dealer
Fuel tank Water or dirt present Have serviced by —
Yamaha dealer
Spark plug Fouled or defective Replace 64
Incorrect heat range Replace 64
Gap incorrect Replace 64
Spark plug Not connected or Connect properly 64
cap loose
Cracked, torn or Have serviced by —
damaged Yamaha dealer
Electrical wir- Loose electrical con- Have serviced by —
ing nections Yamaha dealer
Carburetor Incorrect idle adjust- Have serviced by —
ment Yamaha dealer
Clogged Have serviced by 65
Yamaha dealer
Watercraft slow or Cavitation Jet intake clogged Clean 70
loses power Impeller damaged or Have serviced by
worn Yamaha dealer 70
Engine over- Jet intake clogged Clean 70
heated
Fuel filter Clogged Have serviced by 65
Yamaha dealer
Spark plug Fouled or defective Replace 64
Incorrect heat range Replace 64
Gap incorrect Replace 64
Spark plug Not connected or Connect properly 64
caps loose
Fuel Stale or contaminat- Have serviced by —
ed Yamaha dealer

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