Fast Idle Cam

Fig. 10 Removing choke pulldown diaphragm adjusting screw cover. 1985 - 87 models w/ electric choke:

Fig. 12 Fast idle cam adjustment. Except 1985 - 87 models w/electric choke:

EXCEPT. 1985 - 87 MODELS W/ELECTRIC CHOKE

1. Rotate choke cap 45 degrees counterclockwise to close the choke plate. Tighten screws.
2. Open and close throttle to place fast idle screw on top step of cam, Fig. 12.
3. Place a pull down gauge between lower edge of choke plate and air horn wall, then open and close the throttle to allow fast idle cam to drop.
4. Press upward on fast idle cam. There should be little or no movement indicating that the fast idle screw is on the kickdown step of the cam, against the first step.
5. To adjust, use a suitable tool and bend choke control rod to ensure proper fast idle location on the cam, Fig. 10.
6. Loosen screws and set choke thermostatic housing to the proper index mark, then tighten screws.

Fig. 13 Fast idle cam adjustment. 1985 - 87 models w/electric choke:

1985 - 87 MODELS W/ELECTRIC CHOKE

1. Perform choke plate pulldown adjustment as previously described.
2. With choke cap still wrapped and with vacuum applied to diaphragm, cycle the throttle.
3. If fast idle screw rests on No. 2 step of fast idle cam, proceed to step 5.
4. Turn Allen head adjustment screw clockwise to position fast idle screw higher on No. 2 step or counterclockwise to position it lower, Fig. 13.
5. Remove temporary choke cap gasket, install original locking gasket, choke cap and choke cap retainer and secure with breakaway screws.