Cont’d
Trouble type
Possible reason Recovery action
Propeller is damaged Repair or replace propeller
Trim angle is incorrect
Adjust trim angle to achieve most efficient
angle
Motor is mounted at incorrect
transom height
Adjust motor to proper transom height
Boat bottom is fouled with marine
growth
Clean boat bottom
Weeds or other foreign matter are
tangled on gear housing
Remove foreign matter and clean lower unit
Spark plug(s) fouled or of
incorrect type.
Inspect spark plug(s). Clean or replace
with recommended type
Fuel system is obstructed
Check for pinched or kinked fuel line or other
obstructions in fuel system
Fuel cleaner is obstructed Replace
Fuel is contaminated or stale Fill tank with clean, fresh fuel
Spark plug clearance is incorrect Inspect and adjust as specified
Ignition wiring is faulty
Check wires. Tighten all loose
connections. Replace worn or broken
wires
Ignition parts have failed Replace
Specified engine oil is not being
used or oil is added too much
Check and replace oil as specified, or adjust
engine oil to specified position
Thermostat is faulty Replace
Fuel pump is faulty Replace
Fuel joint connection is incorrect Connect correctly
Engine power
loss
Specified spark plug(s) are not
being used
Check and replace spark plug(s) as specified
Propeller is damaged Repair or replace propeller
Propeller shaft is damaged Replace
Weeds or other foreign matter
are tangled on propeller
Remove and clean propeller
Motor mounting bolt is loose Tighten bolt
Steering pivot is loose Tighten steering pivot
Engine vibrates
excessively
Steering pivot is damaged Replace
100
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