13.2 Fault Diagnosis
Low compression pressure White smoke from exhaust pipe
Worn, burnt or broken piston Worn or damaged piston ring
Work or damaged cylinder and piston Worn or damaged cylinder and piston
Broken washer, air leakage on crankcase
Higher compression pressure Noisy piston
Too much carbon deposited in the combustion chamber Damaged cylinder, piston and piston ring
Worn piston pin hole and piston pin
13.3 Cylinder Block
13.3.1 Cylinder Block Removal
Screw off cylinder block mounting bolt.
Remove cylinder block（together with cam follower）.
13.3.2 Cylinder Block Inspection
Inspect wear of cylinder inner wall. If it is seriously worn,
replace it.
Remove washer and location pin.
Cylinder block
Mounting bolt
Location pin
Washer
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