15
GENERAL TROUBLESHOOTING
Abnormal engine
compression.
Check if the piston ring sinters and the
piston and piston ring wear status. Check
the carbon deposit status in combustor.
Check the wear status inside cylinder.
Check if the spark plug loosens.
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Remove the spark plug. Crimp the fuel
line to prevent fuel entering. Press the
start button to remove the fuel inside the
cylinder.
Reduced engine power.
The choke lever is closed.
Open the choke lever.
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Remove the blockage or replace.
Incorrect lubricant/fuel.
Use correct lubricant/fuel.
Incorrect carburetor
adjustment.
Re-adjust the carburetor.
Carburetor washer hardens.
Replace.
The main nozzle of the
carburetor is blocked.
Clean or replace the carburetor if
necessary.
The spark plug is worn out.
Check or replace.
The carburetor has air
leakage.
Tighten the carburetor.
The fuel has been
contaminated with water.
Replace the fuel.
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Remove the carbon deposit.
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deposit.
Remove the carbon deposit.
Piston ring sinters.
Clean the ring groove or replace the
piston ring.
Cylinder worn.
Replace the cylinder.
Piston and piston ring are
worn out.
Replace.
No spark.
Electrode of the spark plug
is wet.
Dry the spark plug.
Spark plug has carbon
deposit.
Remove the carbon deposit.
Spark plug insulation is
broken.
Replace the spark plug.
Spark plug gap is too big/
small.
Adjust to 0.65±0.05mm
