Sym Fiddle III 50 Service Manual page 147

SYM
Use the special tool of compress valve
springs. Remove valve spring removed
location pin.
Caution
Do not over-compressed valve springs.
Avoiding weaken the spring flexibility.
Put out the spring stopper, spring and valve.
Remove the valve cotter,valve spring
retainer,valve oil seal .
Clean carbon deposits in combustion chamber.
Clean residues and foreign materials on
cylinder head matching surface.
Caution
Do not damage the matching surface of
cylinder head.
CAMSHAFT INSPECTION
Inspect cam lobe height for damaged.
Service Limit
IN: Replacement when less than 25.57 mm
EX: Replacement when less than 25.41 mm
Inspect the camshaft bearing for looseness
or wear out. If any, replace whole set of
camshaft and bearing.
6. CYLINDER HEAD/VALVE
Camshaft
bearing
6-7