Idle Needle Adjustment Procedure A

1. SETTING THE IDLE MIXTURE ADJUSTMENT PROCEDURE A where correct dwell reading could not be obtained with idle air bleed valve adjustment.

A. Using Tool JD-29030-B, BT-7610B, or equivalent, turn both idle mixture needles clockwise until they are lightly seated, then turn each mixture needle counterclockwise 3 turns.

B. Reinstall carburetor on engine using a new flange mounting gasket, but do not install air cleaner and gasket at this time.

2. READJUSTING IDLE AIR BLEED VALVE to finalize correct dwell reading. (Only necessary if idle mixture needles required setting in Step (1), above).

A. Start engine and run until fully warm, and repeat "ADJUSTING THE AIR BLEED VALVE!

B. If unable to set dwell to 25-35~, and the, dwell is below 25~, turn both mixture needles counterclockwise an additional turn. If dwell is above 35~, turn both mixture needies clockwise an additional turn. Readjust idle air bleed valve to obtain dwell limits. After adjustments are complete, seal the idle mixture needle openings in the throttle body, using silicone sealant, RTV rubber, or equivalent. The sealer is required to discourage unnecessary adjustment of the setting, and to prevent fuel vapor loss in that area. On vehicles WITHOUT a carburetor mounted Idle Speed Control Motor adjust curb idle speed if necessary. Check, and only if necessary adjust fast idle speed as described on Emission Control Information label.