Cylinder Head Inspection - Honda Activa SCV110 Service Manual Digest

CYLINDER HEAD/VALVES

CYLINDER HEAD INSPECTION

Remove the carbon deposits from the combustion
chamber and clean off the head gasket surfaces.
Check the spark plug hole and valve areas of the
combustion chamber for cracks.
Check the cylinder head for warpage with a straight edge
and feeler gauge.
SERVICE LIMIT: 0.05 mm (0.002 in)
Measure the free length of the valve springs.
SERVICE LIMITS: 26.8 mm (1.06 in)
Insert the valve into the guide and check that the valve
moves smoothly.
Check each valve for bending, burning, scratches or
abnormal stem wear.
Measure and record the valve stem O.D.
SERVICE LIMIT: 4.90 mm (0.193 in)
7-8
COMBUSTION CHAMBER