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10-28
GROUP 1 0-
FUEL SYSTEM
EJ
IN-CAR ADJUSTMENTS AND REPAIRS
The adjustments
described and illustrated in
this part
should
be performed as required to retain
the desired engine performance characteristics. Refer
to the
specifications
whenever carburettor adjust-
ments
are
made.
CARBURETTOR ADJUSTMENTS
The following adjustments should be made in
the
sequence
listed with the carburettor in situ on
the
engine with air cleaner removed
(Part
10-7).
FAST IDLE SPEED AND CAM POSITION
(Fig. 12)
FIG.
12
Turn
out slow-idle
adjustment screw (Fig. 13)
far
enough
to clear throttle lever ear when the
throttle valves are fully closed against their bores.
Hold throttles in fully closed position and turn
fast idle stop screw out until fast idle cam can be
positioned with screw on second step of cam, as
illustrated. From the point of initial contact with
second step of cam, adjust to obtain correct fast idle
R.P.M.
With fast
idle
stop screw on second step of
cam as illustrated in Fig. 12, apply light closing
pressure to choke valve to take up slack in linkage.
Measure choke opening
"G"
with a drill shank.
If opening is not 0.165", bend fast idle rod at
point indicated to obtain correct setting.
Apply light closing pressure to choke valve,
then open throttle valves to wide open position.
The choke valve should open just enough to allow
the insertion of drill gauge "C" between the choke
valve and wall of air hom. Bend ear on the throttle
~------------------------------------------------,
FAST IDLE C
FIG. 13
WIDE OPEN KICK (Fig. 14)
BEND EAR OF
THROTTLE
(As required)
SLOW IDLE
ADJUSTMENT SCREW
(In wide open position)
FIG. 14
VACUUM KICK (Fig. 15)
Choke Link
(Bend as required)
Press and Hold Diaphragm
at Its full limit of Travel
FIG. 15
lever as required to obtain correct opening of
0.250".
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