2-11
VALVE CLEARANCE ADJUSTMENT
SCF2160
1
2
3
4
SCF2170
VALVE CLEARANCE ADJUSTMENT
1. Remove:
9
Rear cover
Refer to “COVERS AND FUEL TANK”.
2. Remove:
9
Spark plug cap
1
9
Spark plug
2
9
Breather hose
3
9
Cylinder head cover
4
3. Gently operate the starter rope to bring
the piston to the top-dead-center of its
compression stroke (when the screwdriv-
er inserted into the spark plug hole reach-
es the highest position).
4. Measure:
9
Valve clearance
Out of specification
→
Adjust.
NOTE:
Valve clearance must be measured when the
engine is cool to the touch.
INSP
ADJ
Intake Valve (cold):
0.1 mm (0.004 in)
Exhaust Valve (cold):
0.1 mm (0.004 in)
Thickness gauge:
YU-26900-9, 90890-03079
7CF7E0-02 05.7.19 20:11 Page 11