12.2 Fault Diagnosis
Low compression pressure Noisy cylinder head
Improperly adjusted valve clearance Improperly adjusted valve clearance
Valve burnt or bent Valve spring hurt
Poorly sealed valve race Too high compression pressure
Air leakage at cylinder head Too much carbon deposited in the combustion chamber
Improperly installed spark plug
12.3 Cylinder Head
12.3.1 Removal
Screw off the ten locknuts and remove cylinder cover.
Remove cylinder cover hood.
Screw off two locknuts and remove the rocker arm, return spring
and rocker arm shaft.
Cylinder cover
Bolt
Rocker arm
Return spring
Cylinder cover hood Bolt
Rocker arm shaft
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