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VALVE CLEARANCE
Refer to the Safety Precautions on page
Excessive valve clearance will cause noise
and eventual engine damage. Little or no
clearance will prevent the valve from
closing and cause valve damage and power
loss. Check valve clearance when the
engine is cold at the specified intervals.
(1)
(1) Crankshaft hole cap
(2) Timing hole cap
78
63
.
(2)
(3)
(4)
(3) T mark
(4) Index mark
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The checking or adjusting of the clearance
should be performed while the engine is
cold. The clearance will change as the
engine temperature rises.
1.
Remove the front top cover (page
right leg shield (page
2.
Remove the crankshaft hole cap ( ) and
timing hole cap ( ).
2
3.
R o t a t e t h e g e n e r a t o r f l y w h e e l
counterclockwise until the T mark ( ) on
the flywheel lines up with the index mark
( ) on the timing hole. In this position,
4
the piston may either be on the
compression or exhaust stroke.
The adjustment must be made when the
piston is at the top of the compression
stroke when both the intake 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 that the piston is on the
compression stroke. If they are tight and
the valves are open, rotate the flywheel
360° and realign the T mark to the index
mark.
43
) and
44
).
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3
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