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2.
Turn adjusting-screw approx. 1/2 turn counter-
clockwise to open gap, using appropriate tool -
i.e. Allen hex key. (Fig.3.)
Adjusting Screw
3.
Insert 0.1mm feeler gauge between valve
stem and rocker-arm and gently turn adjusting
screw clockwise until it stops.(Fig.4.)
Turn with fingers
until it stops.
0.1mm Feeler Gauge
Turn approx.
1/2 turn.
Allen Key
Fig.3
Fig.4
19
4.
Re-tighten locknut while holding adjusting
screw stationary. (Fig.5.)
Fig.5
5.
Remove
0.04mm
crankshaft through two revolutions and
recheck gap.
If clearance is correct, slacken locknut on
6.
the other rocker-arm and repeat steps 1 to 5
above. Finally, replace rocker box cover.
Remember:
Excessive valve clearance will cause loss of
power, due to valve (s) not opening
sufficiently. On the other hand, a total loss of
clearance may cause difficult starting due to
valves not closing properly, resulting in loss
of compression.
Hold at the screw head.
Tighten Locknut.
feeler,
rotate
the
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