35
6
5
4
(4) Timing hole cap (5) 'T' mark
(6) Index mark
The adjustment must be made when the
piston is at top dead center and both the inlet
and exhaust valves are closed.
This condition can be determined by moving
the rocker arms. If they are free, it is an
indication that the valves are closed and the
piston is in compression stroke. If they are
tight, the valves are open, rotate the cam
(9) Feeler gauge (10) Adjusting screw
(11) Valve stem (12) Lock nut
9
10
Exhaust: 0.1 mm
Adjust by loosening the lock nut (12) and
turning the adjusting screw until there is a
slight drag on the feeler gauge. After
tightening the lock nut, check again the
clearance.
Intake: 0.1 mm
Standard clearance (cold condition)
•
Install all parts in the reverse order of
disassembly.
NOTE
Before inserting the feeler gauge, smear a bit
of engine oil on the feeler gauge to avoid
damage to the feeler gauge.
7
(7) Cam sprocket (8) Special tool
8
•
Check the clearance by inserting the feeler
gauge (9) between the adjusting screw
(10) and valve stem (11).
O
sprocket 360 clockwise and realign the 'T'
mark with the index mark.
12
11
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