106
Common Faults and Solutions
Fault
Type
Cause Solution
The engine
cannot start
No fuel in the fuel tank
Fill up the fuel tank with clean fresh fuel
Fuel is contaminated or obsolete
Fuel filter is blocked Replace the fuel filter
Fuel pump failure Repair or replace the fuel pump
Fuel tank cap vent screw not loosened Loosen the vent screw
Spark plug is contaminated or the type
is incorrect
Check the spark plug. Clean the spark plug or replace with
the correct type of spark plug
Incorrect installation of the spark plug
cap
Check and reinstall the spark plug cap
Ignition wire failure
Check the wiring. Tighten the loose wire and replace
aged or broken wire.
Ignition parts Failure Replace
The engine stop safety cable is not
connected to the emergency stop switch
assembly.
Connect the cable to the switch
Engine internal parts failure Repair
Abnormal
engine idle or
stall
Spark plug is contaminated or the type
is incorrect
Clean the spark plug or replace with the correct type of
spark plug
Fuel system is clogged Check the fuel pipe for extrusion, winding or blockage
Fuel is contaminated or obsolete Fill up the fuel tank with clean fresh fuel
Fuel filter is blocked Replace the fuel filter
Incorrect spark plug clearance Adjust the clearance to the specified value
Ignition wire failure
Check the wiring. Tighten the loose wire and replace
aged or broken wire.
Incorrect oil grade Change to the oil of the specified grade
Thermostat failure Replace
Fuel pump failure Replace
The vent screw for the fuel tank cap is
not loosened
Loosen the vent screw
Fuel joint is not connected correctly Connect it correctly
Chock valve handle is pulled out Return it to its original position
Outboard angle too high Return it to its normal operating position
Engine
weakness
Propeller is broken Repair or replace the propeller
Incorrect trim angle Adjust the trim angle to an appropriate angle
Incorrect installation height of
outboard motor
Adjust it to the correct height
The bottom of the ship is polluted by
Lower casing organisms.
Clean the bottom of the ship
The gearbox is twined by aquatic
plants or foreign matters
Remove foreign matter and clean it
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