Carter AVS 4-Barrel: Adjustment: Unloader

Hold throttle valve wide open, and move choke valve toward closed position as far as possible (rubber bands can be used to hold valves in these positions). Measure clearance between upper edge of choke valve and air horn wall using gauge or drill rod of correct size (see Specifications ). If clearance not correct, adjust by bending unloader tang on throttle shaft lever as necessary (see Figure).