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Troubleshooting
Problem
Cause
Solution
No spark at the spark plug
Spark Plug
Spark Plug deposit existing.
Spark plug gap too big or too small
Spark plug Insulator damaged
Clear Deposit
Adjust to 0.7-0.8
Renew Spark plug
Other
Igniter damaged
Flywheel weak magnetic force
Renew igniter
Renew flywheel
Having spark at the spark plug
Compressing fine
Cylinder fuel too much
Fuel poor, having water or dirt
Screw out spark plug, dry and
screw in.
Renew fuel
No gasoline flowing out after screwing
off drain screw at the bottom of the
carburettor.
Pin valve blocked
Wash or renew carburettor
Supplying oil normal, but
compressing poor
Piston ring worn
Spark plug loosen
Cylinder head leaking, valve gap or
timing wrong
Renew
Screw in tight
Clean, reinstall or re-adjust
Ingitting and supplying gasoline nor
-
mal.
High voltage cable contracting with
spark plug poor.
Stopping switch malfunction or short
circuit.
Machine oil alarm damaged
Eliminate and correct
Eliminate
Renew
Speed or power
insufficiency
Choke no opening
Muffler Ventilation is poor
Moving parts are worm
Governor kit not to reach optimum
balance
Igniting energy too low
Valve cap too big
Cylinder head existing carbon deposit
Open the choke
Renew the muffler
Check or replace
Adjust the governor kit
Renew the igniter or renew the
flywheel.
Adjust to specified range.
Clear the carbon deposit.
Speed weaving too big
Governor kit no to reach optimum
matching state
Wrong carburetor
Spark plug gap not correct
Adjust the governor kit.
Renew the carburettor.
Adjust the gap.
Speed too high
Governor bar not pressing the gover-
nor slider tight or governor slider off
Readjust or assemble the
governor slider.
Abnormal sound
Wrong the valve gap
Cam gear is damaged
Adjust the valve gap.
Renew the camshaft.
Carburetor leakage
Pin valve sticking with dirt
Lightly tap carburettor or clean
O-Ring deformed
Renew
