Chevrolet 1973 Overhaul Manual page 186

1. Air Horn Assembly
2. Screw— A ir Horn—Long
3.
S crew -A ir Horn-Short
4.
B racket-A ir Cleaner
Stud
5.
Screw-Bracket
Attaching
6. Gasket— Air Horn
7. Choke Shaft and
Lever Assembly
8. Choke Valve
9. Screw—Choke Valve
10.
Choke Vacuum
Break, Unit
11. Vacuum Break Hose
12. Vacuum Break Lever
13.
Vacuum Break Link
14. Vacuum Break Lever
Screw
15. Choke Lever
bottom the new idle mixture needle and back off four
turns. Do not install plastic limiter cap at this time until
proper screw settings have been made.
After completing assembly of the carburetor, and when
installed in the vehicle, adjust the mixture screw to
achieve the idle speed and idle mixture settings as
outlined under "Additional External Settings and
Adjustments".
1. If removed, install idle mixture needle and spring
until lightly seated. Back out four turns as a
preliminary idle adjustment.
NOTE: The plastic limiter cap should not be
installed on the idle mixture needle until the
idle mixture has been adjusted, as specified,
on the engine.
NOTE: A new red plastic idle mixture needle
limiter cap is provided in the carburetor
repair kit and also in the idle mixture needle
and limiter cap kit. This cap must be
installed after the idle mixture needle has
been set on engine (see Specifications), by
backing off the new mixture needle the same
number of turns, after bottoming, as was
required to bottom the original needle which
was pre-set and sealed by the manufacturer
before it left the factory. (See "N ote" in
disassembly procedures). Install a new limiter
cap.
2. Invert float bowl and install new throttle body to
bowl insulator gasket.
3. Install throttle body on bowl gasket so that all holes
in throttle body are aligned with holes in gasket.
4. Install two throttle body to bowl attaching screws.
16. Choke Rod
17. Cam—Fast Idle
18. Screw-Cam
Attaching
19.
Float Bowl Assembly
20. Idle Tube Assembly
21. Jet—Main Metering
22. Ball— Pump Discharge
23. Spring—Pump
Discharge
24. Guide— Pump
Discharge
25. Needle and Seat
Assembly
26. Gasket—Needle Seat
27. Idle Compensator
Assembly
28. Gasket-Idle
Compensator
29. Cover—Idle
Fig. M7—Legend for Monojet (Fig. M6)
Compensator
30. Screw— Cover
31. Float Assembly
32.
Hinge Pin—Float
33. Power Piston
Assembly
34. Spring—Power Piston
35. Rod—Power Piston
36. Metering Rod and
Spring Assembly
37.
Filter N ut—Fuel Inlet
38. Gasket—Filter Nut
39. Filter—Fuel Inlet
40. Spring—Fuel Filter
41.
Idle Stop Solenoid
42. Pump Assembly
43.
Lever— Pump
Actuating
44.
Spring—Pump Return
45.
C.E.C. Valve
Tighten evenly and securely (12 to 15 foot lbs. of
torque). The throttle body to bowl screws do not use
lock washers as they have an interference fit
designed into the thread for holding proper torque.
Float Bowl
1. Install fast idle cam to boss on float bowl, attaching
with fast idle cam screw. Tighten securely. Part
number on cam faces outward.
2. Install round seal into recess in idle compensator
cavity in float bowl.
3. Install idle compensator assembly with two (2)
attaching screws. Tighten securely.
4. Install idle compensator cover, with (2) attaching
screws. Tighten securely.
5. Install pump return spring into pump well. Make
sure spring is properly seated in bottom of well.
6. Install pump plunger assembly into pump well with
slide protruding through bottom of bowl casting.
Push downward on pump slide and install pump
drive link into hole in lower end of shaft. Ends of
drive link point towards carburetor bore. Tang on
upper end of link retains link to pump slide.
7. Install power piston and pum p actuating lever to
lower end of link. Projection on this lever points
downward.
8. Install power piston spring into power piston cavity.
9. Install end of power piston actuating rod into
groove on side of power piston. Then install power
piston metering rod assembly and actuating rod
into float bowl. End of metering rod must enter jet
orifice.
CARBURETORS 6 M - 7
46. C.E.C. Vacuum Tube
47.
C.E.C. Valve Nut
48. C.E.C. Valve Bracket
49. C.E.C. Valve Bracket
Screw
50. Throttle Body
Assembly
51.
Gasket— Throttle Body
52. Idle Needle Limiter Cap
53. Idle Needle
54. Spring—Idle Needle
55.
Screw-Throttle Body
56.
Lever— Pump and
Power Rods—New
57.
Screw—Lever
Attaching
58. Link— Power Piston
Rod
59. Link-P um p Lever
OVERHAUL MANUAL