Honda SH300I 2006, Manual

Page: 228 / 511

CYLINDER HEAD/VALVES
9-12
CYLINDER HEAD DISASSEMBLY
Remove the following:
– cylinder head (page 9-11)
– camshaft/rocker arm (page 9-7)
Remove the valve spring cotters using the spring
compressor.
Mark all the parts
so they can be
placed back in their
original locations.
Remove the following:
– spring retainer
– valve spring
– valve
– stem seal
– spring seat
INSPECTION
CYLINDER HEAD
Be careful not to
damage the valve
seat and gasket
surfaces.
Remove the carbon deposits from the combustion
chamber.
Check the spark plug hole and valve areas for
cracks.
Check the cylinder head for warpage with a straight
edge and feeler gauge across the stud holes.
To prevent loss of
tension, do not
compress the valve
springs more than
necessary.
TOOLS:
Valve spring compressor
07757-0010000
Valve spring compressor attach-
ment 07959-KM30101
COTTERS
SPRING COMPRESSOR
VALVE STEM SEAL
SPRING SEAT
SPRING
RETAINER
COMBUSTION CHAMBER
SERVICE LIMIT: 0.05 mm (0.002 in)