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Failures Causes
Troubleshooting
The engine
has abnormal
sound.
1. The cylinder and piston are
seriously worn out.
2. The needle bearings of the
cnnecting rod are seriously worn
out.
3. Excessively early ignition.
4. The combustion chamber has too
much carbon deposit.
5. The spark plug overheats.
1.Replace the cylinder body and
piston.
2.Replace the bearings and parts.
3. Regulate the ignition time.
4.Clear the carbon deposits in the
cylinder head.
5.Replace the ignition plug.
The engine
does not run
steadily.
1. There is water or dirt in the
carburetor.
2.
The oil route is clogged.
3.
The crankcase leaks.
4.
The joint of the carburetor and
engine has leakage.
5.
The mixing gas is too thick or
too thin.
1. Clean the carburetor.
2. Blow or replace the oil pipe.
3 .Replace the oil seal.
4.Tighten the screw.
5. Adjust the carburetor.
The engine does not run normally
.
The engine
overheats
1. Run for too long time with a
lower gear.
2. Overload or run under heavy
load for excessive long time.
3. The mixing gas is too thick or
too thin.
4. The engine uses improper
machine oil or the oil in the
gearbox is not sufficient.
5. The clutch is slippery.
6. The chain is too tight.
7. The brake can not be released.
1. Shift gear and control time.
2. Control the load and leave
intervals to cool
3. Adjust the carburetor.
4. Replace the proper machine oil
and refill the gearbox with oil.
5. Adjust the play or replace the
clutch, friction pad and spring.
6. Adjust the tightness.
7. Adjust the clearance of the
brake.
