Chevrolet 1977 10 Series, Repair Manual, Page: 209 / 468

CARBURETOR
6C-15
Fig. 6 C -4 0 -R e m o v in g A ir Horn
12. Remove vacuum break rod by holding down on fast
idle cam (hot idle position); move end of vacuum break rod
away from float bowl; then disengage rod from hole in
interm ediate choke lever.
Fig. 6 C -4 2 ~ R e m o v in g A ir H orn G asket and Pum p P lu n g e r
Choke
1. Remove three attaching screws and retainers from
choke cover and coil assembly. Then pull straight outw ard
and remove cover and coil assembly from choke housing.
Remove choke cover gasket, if used.
On M 4M C hot air choke model, it is not necessary to
remove baffle plate from beneath the therm ostatic coil.
D istortion of the therm ostatic coil may result if forced off the
center retaining post on the choke cover.
2. Remove choke housing assembly from float bowl by
removing retaining screw and washer inside the choke
housing (Fig. 6C-49). The complete choke assembly can be
removed from the float bowl by sliding outward.
3. Remove secondary throttle valve lock-out lever from
float bowl. (Fig. 6C-50).
Fig. 6C-4 1-Rem oving Front Vacuum Break
Fig. 6C-43--Removing Power Piston and M etering Rods