Ford (AUTOLITE) 4-Barrel Models 4300: Adjustment: Notes

ADJUSTMENT NOTE  - If preliminary adjustment required to warm-up engine, set both idle mixture screws 1 1/2 turns outward (counterclockwise) from a lightly seated position, set idle air by-pass screw 3 1/2 turns outward (counterclockwise) from a lightly seated position. Operate engine until temperatures normalized. Hot idle compensator valve must be closed when making following adjustments. 

• THERMACTOR ENGINES WITH AIR CONDITIONING CAUTION:  If Thermal Sensing Valve used in distributor vacuum line (controlling vacuum line to intake manifold), disconnect distributor vacuum hose and manifold vacuum hose at sensing valve and plug manifold vacuum hose when making carburetor idle adjustment.