3-7
MAINTENANCE
CYLINDER HEAD COVER
CHOKE CABLE
CRANKCASE
BREATHER TUBE
THROTTLE CABLE
FEELER GAUGE
VALVE CLEARANCE
NOTE:
Inspect and adjust the valve clearance when the engine
is cold (below 35°C/95°F).
Liftup the body cover (page 2-3).
Disconnect the crankcase breather tube from the
cylinder head cover.
Release throttle cable and Choke Cable from the head
cover clamp.
Remove the bolts (2 nos.) and cylinder head cover.
Remove the fan (page 11-2).
Turn 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.
Rocker arms should be slightly loose. If the rocker arms
are tight, turn the crankshaft clockwise 360° (one full turn)
and align the “T” mark with the index mark.
Check the valve clearance by inserting a feeler gauge
between the valve adjusting screw and valve stem.
VALVE CLEARANCE:
IN/EX: 0.16 ± 0.02 mm (0.006 ± 0.001 in)
BOLTS
"T" MARK
INDEX MARK
INDEX MARK
CLAMP
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