USER'S MANUAL
40
Troubleshooting Table of the Engine
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.
Failures
Causes
Troubleshooting
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The engine doe
s not run steadily.
The engine 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.
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.
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.
