3. TROUBLESHOOTING
15
TROUBLE CAUSE
REMEDY
A
bnormal
c
yli
nder
com
pression
.
Normal fuel su
pply system.
Normal spar
k
plug.
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.
Tighten with a gasket in.
Air leakage between cylinder block and
cylinder head.
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 gasoline 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 the “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.
Install the spark plug cap.
Turn the engine switch to the “ON” position.
Pass negative pole (thread) of the spark plug through cylinder cover to connect
grounding and pull the recoil starter grip to observe the spark.
