Air Fuel Screw Mixture Lean to Rich
Red: 1/2 turn out from seated Orange: 1 turn Yellow: 1 1/2 turns Green: 2 turns Blue: 2 1/2 turns Black: 3 turns Recommendation: Set the fuel screw by turning inwards until the idle speed lowers by about 200-300rpm, then turn outwards 1 to 1 1/4 turns. No