Set the idle speed of the engine so the engine idles smoothly with an engine turning at 750 rpm to 1200 rpm. The idle-speed screw is located in the idle-speed port on the driver's side of the carburetor; toward the front. Turn the idle-speed screw with a flat-head screwdriver -- clockwise to increase idle speed and counterclockwise to decrease it. Screw in Bleed Restrictions, pair. New. Brass bleed restrictions to screw in main body or air horn for main air bleed adjustments. .125" These will easily screw directly in to the holes, no need to tap. We recommend some red loctite to secure them. We can size these for you.
New york state police bureau of criminal investigation