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Trouble type Possible reason Recovery action
Engine power
loss
Propeller is damaged Repair or replace propeller
Trim angle is incorrect
Adjust trim angle to achieve most
efficient operation
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) are fouled or 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 filter is clogged Replace with recommended type
Fuel is contaminated or stale Fill tank with clean, fresh fuel
Spark plug gap is incorrect Inspect and adjust as specified
Ignition wiring is damaged or poorly
connected
Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires
Ignition parts have failed Have serviced by your dealer
Specified engine oil is not being used Check and replace oil as specified