7-5
CYLINDER HEAD/VALVES
CYLINDER HEAD REMOVAL
Remove the following:
— Engine (page 6-2)
— Intake/Exhaust shrouds and seal (page 7-4)
— Cooling fan and cover (page 11-2)
— Spark plug (page 3-6)
— Muffler assembly (page 2-8)
Disconnect crankcase breather pipe from cylinder head
cover.
Remove the bolts (2 nos.) and cylinder head cover.
Rotate the crankshaft clockwise and align the “T” mark
on the flywheel with the index mark on the right
crankcase.
Make sure that the piston is at TDC (Top Dead Center) on
the compression stroke.
The rocker arms should be loose.
If the rocker arms are tight, rotate the crankshaft one turn
and realign the “T” mark with the index mark.
Remove the cam chain tensioner lifter plug and O-ring.
Install the stopper tool to the cam chain tensioner lifter.
Make a tensioner shaft stopper tool out of a thin piece of
steel (0.8 mm thick) using the diagram.
Turn the cam chain tensioner shaft clockwise with the
stopper tool to retract the cam chain tensioner lifter, then
insert the stopper fully to hold the cam chain tensioner in
the fully retracted position.
3.5
mm
16.5 mm
9.5 mm
8.5
mm
LIFTER PLUG/O-RING
"T" MARK
INDEX MARK
CYLINDER HEAD COVER
BOLTS
CRANKCASE BREATHER PIPE
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