Metering Rod

With air horn removed, remove metering rod by holding throttle valve wide open and pressing down on metering rod against spring tension and sliding rod out of slot in holder. Back out idle speed screw or idle stop solenoid if equipped and rotate fast idle cam so that cam follower clears cam. Hold throttle valve completely closed and press down on power piston so that it is held against its stop. Swing metering rod holder over flat surface of bowl casting adjacent to carburetor bore and use specified gauge to check clearance (see specifications ) between lower surface of holder and bowl casting. Gauge should be a slide fit. If clearance is not as specified, adjust by carefully bending metering rod holder up or down as required.