Fine Tuning Your Carburetor Tuning Zenith Carburetor
quick guide on how to tune your car using a vacuum guage! Turning the fuel adjustment screws all the way in (clockwise) until they barely seat and then turning them out (anticlockwise) by a How to Tune Zenith Stromberg or SU Carburetors on Your British From cold the mixture screw should be approximatly 1.1/2 turns anti-clock wise from the stop. You then adjust it for a smooth tick over with the How to Rebuild a Tractor Carburetor, START TO FINISH (Zenith carburetor) ...