36
29
1. Remove the crankshaft hole cap (1)
and timing hole cap (2) and tappet
covers.
2. Rotate the flywheel anticlockwise until
the ‘T’ mark (3) on the flywheel
coincides with the index mark (4) on the
left crankcase cover. In this position the
piston will either be on the compression
or exhaust stroke.
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,
O
rotate the flywheel 360 anticlockwise
and re-align the 'T' mark with the index
mark.
(1) Crankshaft hole cap (2) Timing hole cap
(3) T-mark (4) Index mark
1
2
4
3
NOTE
The checking or adjustment of valve
clearance should be performed while the
engine is cold. The clearance will change as
the engine temperature rises.
VALVE CLEARANCE
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