3. TROUBLESHOOTING
21
TROUBLE
CAUSE
REMEDY
Abn
ormal c
yl
ind
er
co
m
pre
ssio
n
Normal
fuel s
uppl
y syst
em
Normal
ign
iton
system
Piston ring is worn to or even
over its wear limit
Replace
Piston ring is broken.
Replace
Piston ring is sticking.
Clear up carbon fouling.
Spark plug is not installed tighten
or without a gasket.
Air leakage between cylinder
block and cylinder head.
Tighten with a gasket in.
Check cylinder gasket, and the
flatness of the surface by which
cylinder block contacting with
cylinder head
Tighten cylinder head bolts in
stipulated order to stipulated
torque.
Air leakage in the valves
Check valve. Clearance and
tightness, repair if necessary.
If still can’t starting, have the engine to our authorized dealer for repairing.
Spark plug testing
WARNING:
●
When testing the spark plug, never hold the high- tension line of the spark plug with
wet hand.
●
Make sure there is no spilled fuel outside the engine and that the spark plug isn’t
dipped with fuel.
●
To prevent fire, keep sparks far away from the spark plug mounting hole.
Turn the fuel cock to ―OFF) position, and drain the gasoline of the carburetor.
Remove the spark plug and spark plug cap.
Pull the recoil starter grip to drain the gas in the cylinder.
