GOV ERNOR
ARM
SENSITIVITY
ADJUSTING
RATCHET
\
GOVERNOR STUD
DECREASE
SENSITIVITY
DECREASE
SPEED
.INCREASE
SPEED
•SPEED
ADJUSTING
NUT
FIGURE
18.
GOVERNOR ADJUSTMENT
2.
Now turn the
flywheel
clockwise for an additional 10 to
45degrees.
There is no
timing
mark for this position so
it
must be estimated.
With
the piston located in this
position,
it
will
be in its power stroke
with
both valves
completely closed.
4.
Using a feeler
gauge,
check the
clearance
between the
rocker arm and the valve (see Fig. 20).
Increase
or
reduce
the
clearance
until
the proper gap is established.
Correct valve
clearance
is .017" intake and .017"
exhaust.
3. To
change
the setting of valve
clearance,
adjust the
locknut
which
secures
the rocker arm to the cylinder
head
(see Figure 19). Loosen the locknut to
increase
clearance
and tighten it to
reduce
clearance.
5. Always adjust the valve
clearances
in the
firing
order
(1-2-4-3)
sequence.
After
allowing
engine to cool,
adjust #1 cylinder.
After timing
the #1 cylinder, adjust
the valve
clearance
according to
steps
2 and 3.
VALVE
SPRING
RETAINER
ADJUST VALVE
CLEARANCE HERE^-
ROCKER
ARM
EXHAUST.
FIGURE
19.
VALVE MECHANISM
FIGURE
20.
ADJUSTING VALVES
22
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