39
LOW OUTPUT
Symptom
Probable cause
Remedy
Flameout when speed up
The smoke is thin, carburetor
spout backward
Fuel filter clogged, fall short
of fuel
Muffler fouled with oily
deposits
Clean fuel filter, clean fuel
road, adjust carburetor
Clean the oily deposits
Compress press is shortage
Piston, piston ring, cylinder
attrite
Replace piston,piston ring
Engine leak
Conjoint surface of the
cylinder and crank case leak
Repair
The end of two crank shaft
leak
The seal is bad
Replace seal
Engine overheats
Burning room fouled with oily
deposits
Avoid use it for long time,
high speed and heavy load
clean the oily deposits
ENGINE RUN UNSTABLE
Symptom
Probable cause
Remedy
There are knock sound in engine
Piston, piston ring, Cylinder attrite
Piston pin, piston attrite
Bearing of crank shaft attrite
Replace piston, piston ring
Replace piston pin,
Replace piston bearing
There are metal knock sound
Engine overheats
Burning room fouled with oily
deposits
Gasoline branded is unfit
Avoid use it for long time, high speed
and heavy load clean the oily
deposits
Replace require branded octane
Engine ignition break off
There is water in fuel
Spark gap is wrong
Coil gap is wrong
Instead fuel
Adjust spark gap (0,6 – 0,7 mm)
Adjust coil gap (0,3 – 0,4 mm)
THE ENGINE STOPS
Probable cause
Remedy
Fuel is used up
Spark plug fouled with oily deposits and short
circuit
high voltage wire fall off
Add fuel
Clean the oily deposits
Connect
