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4-1-4 Unable igniting
4-1-5 Engine overheat
TROUBLE CAUSE REMEDY
Oil insufficient or wrong oil ratio in the gasoline Refill engine oil
Exhaust pipe blocked up Clean exhaust pipe
Shroud leaking Repair damaged part
Cooling fins blocked by foreign matter Clear cooling fins
Cooling fan is loosen and miss function Reinstall well
Connection rod deformation to make piston and cylinder
bushing side wear
Replace connection rod
Cylinder or piston or piston ring is worn to make hunting
between cylinder and crankcase
Replace the worn parts
Gasoline engine
overheat
Improper adjustment of engine governor to produce
speed high.
Readjust engine governor
Crankshaft main bearing burnt out Replace main bearing
TROUBLE
CAUSE REMEDY
Fuel is finished Refill fuel
Carburetor is clogged Check fuel line and dredge
Float is leaking Repair
Fuel
supply
system
Needle valve is sticked
Dismantle float chamber and clean or
replace needle valve.
Spark plug is punctured, or
short-circuited by carbon deposit
Replace spark plug
Side electrode of spark plug is
dropped out
Replace spark plug
High-tension wire is dropped out Weld on
Ignition coil is punctured or
short-circuited
Replace ignition coil
Ignition
system
Parking wire is located on engine
body
Find out meeting and insulate
Unable
igniting
The other
Cylinder is seriously scored and valve
dropped out
Repair or replace damaged parts
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