GMC 1976 ZEO 6083 Maintenance Manual page 361

springs until seated . Back out the mixture needles six
turns as a preliminary idle adjustment . Final adjust-
ment must be made on the engine using the proce-
dure described under slow idle adjustment .
2 . Install lower end of pump rod in throttle lever
by aligning tang on rod with slot in lever. End of rod
should point outwards towards throttle lever.
FLOAT BOWL ASSEMBLY
1 . Install new throttle body to bowl gasket over
two locating dowels on the bowl as shown in Figure
24.
2. Install throttle body, properly located over
dowels on float bowl then install throttle body to
bowl screws and tighten evenly . See Figure 23 .
3 . Install fuel inlet filter spring, new gasket and
inlet nut (figure 22). Tighten nut (18 ft . lbs.) .
CAUTION: Tightening beyond specified
torque can damage nylon gasket.
CHOKE HOUSING ASSEMBLY TO FLOAT
BOWL
1 . Install new cup seal into plastic insert on side
of float bowl for intermediate choke shaft. Lip on cup
seal faces outward.
2. Install fast idle cam onto the intermediate
choke shaft (steps on fast idle cam face downward)
as shown in Figure 21 .
3. Install new rubber cup seal inside choke hous-
ing. Lips on seal face inward, towards inside of hous-
ing.
4. Carefully install fast idle cam and intermediate
choke shaft assembly through seal in choke housing;
then install thermostatic coil lever onto flats on inter
mediate choke shaft. Inside thermostatic choke coil
level is properly aligned when both inside and out-
side levers face towards fuel inlet. Install inside lever
retaining screw into end of intermediate choke shaft.
Tighten securely .
5. Install lower choke rod lever into cavity in
float bowl . Install plastic tube seal into cavity on
choke housing before assembling choke housing to
bowl . Install choke housing to bowl sliding inter-
ENGINE FUEL SYSTEM 6M- 1 9
Figure 25-Lower Choke Lever
mediate choke shaft into lower choke lever. See Fig-
ure 25 .
6. Install choke housing retaining screw and
washer and tighten securely .
NOTE : The intermediate choke shaft lever and
fast idle cam are in correct relation when the
tang on lever is beneath the fast idle cam. Do not
install choke cover and coil assembly until inside
coil lever is adjusted .
COMPLETION OF FLOAT BOWL
ASSEMBLY
1 . Install baffle in secondary side of float bowl
with notches toward top of bowl .
2. Install pump discharge check ball and retainer
in passage next to pump well . Tighten retainer se-
curely .
3. Install primary metering jets . See Figure 17 .
4. Install new needle seat and gasket assembly.
NOTE:
To make adjustment easier, bend float
arm upward at notch in arm before assembly .
5 . Install float needle by sliding float lever under
pull clip from front to back. With float lever in pull
clip, hold float assembly at toe and install retaining
pin from pump well side .
NOTE : Do not install float needle pull clip into
holes in float arms .