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34
Ⅴ. GASOLINE ENGINE IS EXCESSIVEL HOT
TROUBLE
CAUSE
REMEDY
Gasoline engine is
excessively
Improper ignition time
Adjust ignition advance angle
properly
Insufficient engine oil supply
Refill sufficient engine oil
Exhaust pipe is clogged
Dredge exhaust pipe
Do.
Flow guard is leaking
Repair leakages
Dirt or something like the fill up
among air cooling fins
Clear away dirt or something like
this
Cooling fan is loosen, losing function
Reinstall it well
Cylinder, piston or piston ring is worn,
Resulting in air flow between cylinder
and crankcase
Replace tie rod
Tie rod deformation makes piston and
Cylinder bushing side wear.
Replace tie worn part
Improper adjustment of engine speed
produces excessive rotational speed
Readjust engine speed to proper
value
by speed regulator
Bearing of crankshaft is burn out
Replace main bearing
NOTE: The gasoline engine should run under certain temperature. Generally, permitting temperature
at the flow guard outlet is between 80～110℃, while the temperature of the crankcase is about 60℃
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