Yamaha XF375 Owner's Manual page 68

Trouble Recovery
Trouble Alert buzzer sounds or indicator lights.
Item
Cooling system Is cooling system clogged?
Low oil pressure-
Is low oil pressure-alert indicator on or blinking?
alert
Spark plugs Is heat range of spark plugs incorrect?
Is specified engine oil not being used?
Engine oil
Is engine oil contaminated or deteriorated?
Oil filter Is oil filter clogged?
Oil pump Is oil pump malfunctioning?
Thermostat Is thermostat malfunctioning?
Water pump Is water pump malfunctioning?
Fuel filter Is there excess water in fuel filter?
Trouble Engine power loss.
Item
Is propeller damaged?
Propeller
Is propeller pitch or diameter incorrect?
Is outboard motor mounted at incorrect height on tran-
Mounting height
som?
Alert system Has alert system activated?
Boat bottom Is boat bottom fouled with marine growth?
Are spark plugs fouled or of incorrect type?
Spark plugs Is spark plug gap incorrect?
Is heat range of spark plugs incorrect?
Are weeds or other foreign material tangled on gear
Lower unit
housing?
Fuel system Is fuel system clogged?
Fuel filter Is fuel filter clogged?
Is fuel contaminated or stale?
Fuel
Is specified fuel not being used?
Ignition wiring Is ignition wiring damaged or poorly connected?
Electrical parts Are electrical parts malfunctioning?
Engine oil Is specified engine oil not being used?
Thermostat Is thermostat clogged or malfunctioning?
Fuel tank Is fuel tank air vent restricted or clogged?
Fuel pump Is fuel pump malfunctioning?
Fuel joint Is fuel joint connection incorrect?
Is engine not responding properly to control lever posi-
Control lever
tion?
Trouble Engine vibrates excessively.
Item
Is propeller damaged?
Propeller
Are weeds or other foreign material tangled on propeller? Remove and clean propeller.
Propeller shaft Is propeller shaft damaged?
Outboard motor
Are outboard motor mounting bolts loose?
mounting
Steering pivot Is steering pivot loose or damaged?
63
Question
Question
Question
Answer
Inspect cooling water inlet for obstructions.
Have serviced by a Yamaha dealer.
Inspect spark plugs and replace with recommended
type.
Inspect engine oil and replace with specified type.
Replace engine oil with specified type.
Have serviced by a Yamaha dealer.
Have serviced by a Yamaha dealer.
Have serviced by a Yamaha dealer.
Have serviced by a Yamaha dealer.
Drain fuel filter.
Answer
Have propeller repaired or replaced.
Install correct propeller to operate outboard motor at its
recommended speed (r/min) range.
Have outboard motor adjusted to proper transom height.
Find and correct cause of alert.
Clean boat bottom.
Inspect spark plugs. Clean or replace with recommend-
ed type.
Replace spark plug.
Inspect spark plugs and replace with recommended
type.
Remove foreign material and clean lower unit.
Inspect for pinched or kinked fuel line or other obstruc-
tions in fuel system.
Clean or replace fuel filter.
Fill tank with clean, fresh fuel.
Replace fuel with specified type.
Inspect wires for breaks and wear. Have connections
tightened and broken or worn wires replaced by a
Yamaha dealer.
Have serviced by a Yamaha dealer.
Replace engine oil with specified type.
Have serviced by a Yamaha dealer.
Remove obstruction.
Have serviced by a Yamaha dealer.
Connect correctly.
Have serviced by a Yamaha dealer.
Answer
Have propeller repaired or replaced.
Have serviced by a Yamaha dealer.
Tighten bolts or have serviced by a Yamaha dealer.
Have serviced by a Yamaha dealer.