Secondary Vacuum Break Adjustment

Fig. 14 Blocking air bleed holes:

Fig. 21 Secondary vacuum break adjustment. 1982 E2SE Carburetor:

NOTE: Prior to adjusting vacuum break, refer to Fig 14 for air bleed hole blocking procedures.

NOTE: Before performing adjustment procedure, remove secondary vacuum break from carburetor and position bracket in vise, then grind off adjusting screw cap and reinstall vacuum break. Plug vacuum break end cover using an accelerator pump cup or equivalent. After completing adjusting remove pump plunger cup.

1. Rotate degree scale until zero is opposite pointer, then with choke valve completely closed and fast idle screw on high step of fast idle cam, place magnet squarely on top of choke valve and rotate bubble until it is centered, FIG 21.
2. Rotate scale so that specified degree for adjustment is opposite pointer.
3. Seat choke vacuum diaphragm using a vacuum source with over 5 inches HG of vacuum.
4. Hold choke valve toward the closed position by lightly pushing on intermediate choke lever and note angle gauge reading. When noting reading check to ensure that vacuum diaphragm is seated.
5. Rotate adjusting screw in rear cover until bubble is centered. After completing adjustment,apply a suitable sealer over adjusting screw head.

NOTE: Remove pump plunger cup from end cover before applying sealer over adjusting screw head.