Parsun TE18BM Owner's Manual page 59

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Trouble type Possible reason
Propeller is damaged
Trim angle is incorrect
Motor is mounted at incorrect transom height
Boat bottom is fouled with marine growth
Weeds or other foreign matter are tangled on
gear housing
Spark plug(s) are fouled or incorrect type
Fuel system is obstructed
Engine power loss Fuel filter is clogged
Fuel is contaminated or stale
Spark plug gap is incorrect
Ignition wiring is damaged or poorly connected
Ignition parts have failed
Specified engine oil is not being used
Thermostat is faulty or clogged
Air vent screw on fuel tank is closed
Fuel pump has malfunctioned
Recovery action
Repair or replace propeller
Adjust trim angle to achieve most efficient
operation
Adjust motor to proper transom height
Clean boat bottom
Remove foreign matter and clean lower
unit
Inspect spark plug(s). Clean or replace
with recommended type
Check for pinched or kinked fuel line or
other obstructions in fuel system
Clean or replace with recommended
type
Fill tank with clean, fresh fuel
Inspect and adjust as specified
Check wires for wear or breaks. Tighten all
loose connections. Replace worn or broken
wires
Have serviced by your dealer
Check and replace oil as specified
Have serviced by your dealer
Open air vent screw
Have serviced by your dealer
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