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FUEL SYSTEM
6C-65
FLOAT NEEDLE PULL CLlP LOCATION
HOOK CLlP OVER EDGE OF FLAT
O N FLOAT A R M FACING FLOAT PON
I
Fig. 6C-12 1 Pull Clip Location
e. Visually check float alignment after adjustment.
20. Install plastic filler block over float needle, pressing
downward until properly seated.
21. Install power piston spring in power piston well. If
main metering rods were removed from hanger, reinstall
making sure tension spring is connected to top of each rod.
Install power piston assembly in well (aligning pin on piston
with slot in well) with metering rods properly positioned in
metering jets. Press down firmly on plastic power piston
retainer to make sure the retainer is seated in recess in bowl
and the top is flush with the top of the bowl casting. If
necessary, using a drift punch and small hammer, tap retainer
lightly in place.
22. Install pump return spring in pump well.
23. Install air horn gasket by carefully sliding tab of
gasket around main metering rods and beneath the power
piston hanger. Position gasket over the two dowel pins on the
float bowl.
24. Carefully lift corner of the air horn gasket and install
pump plunger in the pump well by pushing the plunger to
the bottom of the well against return spring tension. While
holding in this position, align pump plunger stem with hole
in gasket.
AIR HORN ASSEMBLY
1. If removed, install choke shaft, choke valve, and two
attaching screws. Tighten screws securely and stake lightly
in place.
2. Check choke valve for freedom of movement and
proper alignment before staking screws in place.
AIR HORN TO BOWL INSTALLATION
1. Holding down on air horn gasket at pump plunger
location, carefully lower air horn assembly onto float bowl
making sure that the bleed tubes, accelerating well tubes, pull-
over enrichment tubes (if used), and pump plunger stem are
positioned properly through the holes in the air horn gasket.
CAUTION: D o not force the air horn assembly
onto the bowl.
2. Install two long air hoin screws, five short screws, and
two countersunk screws into primary venturi area.
NOTE: Install secondary air baffle beneath screws no.
3 and 4 (where used).
All air horn screws must be tightened evenly and
securely. See Fig. 6C-122 for proper tightening sequence.
Fig. 6'2-122 Air Horn Tightening Sequence
3. Install vacuum break diaphragm rod into the slot in
lever on the end of the air valve shaft. Then install the other
end of rod into hole in the front vacuum break diaphragm
plunger. Install front vacuum break control and bracket
assembly to air horn using two retaining screws through the
bracket. Tighten screws securely.
NOTE: Do not attach vacuum break hose until vacuum
break adjustment is completed. Refer to adjustment
procedure.
4. Connect upper end of pump rod to pump lever by
placing rod in specified hole in lever. Align hole in pump lever
with hole in air horn casting using 5-25322. Using small
screwdriver, push pump lever roll pin back through casting
until end of pin is flush with casting bosses in air horn (Fig.
6C- 123).
C A U T l 0 N: Use care instalfing the small roll pin
to prevent damage to pump lever casting bosses.
5. Install two secondary metering rods into the
secondary metering rod hanger (upper end of rods point
toward each other). Install secondary metering rod holder,
with rods, onto air valve cam follower. Install retaining screw
and tighten securely, Fig. 6C-108. Work air valves up and
down several times to make sure they are free in all positions.
6. Connect choke rod into lower lever inside bowl cavity;
then install choke rod into slot in upper choke lever and retain
the choke lever to the end of the choke shaft with attaching
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