Pontiac FIREBIRD 1972 Service Manual page 699

E N G I N E F U E L 6B-45
2. Disconnect pump rod from throttle lever by remov-
ing spring clip.
3. Remove upper end of pump,rod from pump lever by
rotating rod out of upper hole in lever.
4. Remove fast idle cam attaching screw from side of
float bowl. The upper end of the choke link cannot
be removed from the choke shaft until after air horn
and choke valve are removed.
5. Remove choke vacuum break diaphragm hose from
the choke vacuum break and throttle body assembly.
6. Remove vacuum break lever from end of choke shaft
by removing retaining screw in end of shaft. Then,
remove the vacuum break diaphragm unit from air
horn by removing two attaching screws.
7. Remove eight air horn screws, then lift air horn from
float bowl.
8. Place air horn on flat surface. Remove float hinge pin
and lift float from cover. Float needle and pull clip
may now be removed from float arm.
9. Remove float needle seat and gasket with a wide
blade screw driver.
10. Remove power piston by depressing piston stem and
allowing it to snap free. Use care not to bend the
power piston stem.
1 1 . A tang on the inner pump lever retains the pump
plunger assembly in the inner pump lever hole. T o
remove the pump assembly from the inner pump
lever, rotate the assembly until it clears the tang on
the inner lever and then slide it out of the hole in the
lever. The outer pump lever and shaft may be
CLUSTER
\\
PUMP RETURl
POWER
VALVE
Fig. 68-59 Float Bowl Assembly
removed by loosening set screw on the inner lever and
sliding outer lever and shaft assembly from the air
horn.
12. The air horn gasket may now be removed.
13. Remove two choke valve attaching screws, then
remove choke valve. Care should be taken when
removing attaching screws so that the choke shaft
will not be bent. It may be necessary to file off staked
end on choke valve screws before removing.
14. Remove choke valve shaft from air horn.
15. Remove the fast idle cam and fast idle link and lever
from the choke shaft.
FLOAT BOWL
DISASSEMBLE
1 . Remove pump inlet filter screen and pump plunger
Fig. 6 0 - 6 0 Removing Pump Discharge Spring Retainer