Vent screw of fuel tank cap not
loosened
The spark plug is contaminated
or the model is incorrect
Check the spark plug. Clean it or replace with the
correct spark plug
Incorrect installation of spark
plug cap
Check and reinstall the spark plug cap
Check the wiring. Tighten the loose wire and
replace the old or broken wire.
Ignition component failure
The engine stop safety line is
not connected to the emergency
stop switch assembly.
Connect the line to the switch
Internal parts failure of the
engine
Engine idle is
abnormal or
stalls
The spark plug is contaminated
or the model is incorrect
Clean it or replace with the correct spark plug
Check the fuel line for extrusion, entanglement
or blockage
Fuel oil polluted or obsoleted
Fill the fuel tank with clean new fuel
Adjust the gap to the specified value
Check the wiring. Tighten the loose wire and
replace the old or broken wire.
Incorrect engine oil grade
Change it to the specified oil grade
Vent screw of fuel tank cap not
loosened
The fuel joint is not connected
correctly
Pull out the choke handle and
return it to its original position
The angle of the outboard
motor is too high
Return it to its normal running position
Repair or replace the propeller
Adjust the trim angle to the appropriate angle
Incorrect installation height of
outboard motor
Adjust it to the correct height
The bottom of the ship is
polluted by underwater
organisms
Clean the bottom of the ship
Gear box twined by aquatic
plants or foreign matters
Remove the foreign matters and clean it
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