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Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?
A. Clean or replace fuel filter.
Q. Are ignition parts malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Has alert system activated?
A. Find and correct cause of alert.
Q. Is spark plug gap incorrect?
A. Replace spark plug.
Q. Is ignition wiring damaged or poorly con-
nected?
A. Inspect wires for breaks and wear. Have
connections tightened and broken or worn
wires replaced by a Yamaha dealer.
Q. Is specified engine oil not being used?
A. Inspect engine oil and replace with speci-
fied type.
Q. Is thermostat clogged or malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is fuel pump malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is fuel tank air vent restricted or clogged?
A. Remove obstruction.
Q. Is fuel joint connection incorrect?
A. Connect correctly.
Q. Is battery cable disconnected?
A. Connect securely.
Alert buzzer sounds or indicator lights.
Trouble Recovery
Q. Is cooling system clogged?
A. Inspect cooling water inlet for obstruc-
tions.
Q. Is low oil pressure-alert indicator on or
blinking?
A. Have serviced by a Yamaha dealer.
Q. Is heat range of spark plugs incorrect?
A. Inspect spark plugs and replace with rec-
ommended type.
Q. Is specified engine oil not being used?
A. Inspect engine oil and replace with speci-
fied type.
Q. Is engine oil contaminated or deteriorat-
ed?
A. Replace engine oil with specified type.
Q. Is oil filter clogged?
A. Have serviced by a Yamaha dealer.
Q. Is oil pump malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is thermostat or water pump malfunction-
ing?
A. Have serviced by a Yamaha dealer.
Q. Is there excess water in fuel filter?
A. Drain fuel filter.
Engine power loss.
Q. Is propeller damaged?
A. Have propeller repaired or replaced.
Q. Is propeller pitch or diameter incorrect?
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