11. CARBURETOR SUPER8 50 2T AUTO BYSTARTER INSTALLATION Auto Bystarter Screws Install the auto bystarter into the carburetor body until it bottoms.. Install the set plate and then tighten the two screws. Set Plate FLOAT CHAMBER Remove the two float chamber screws and Screws the float chamber. Remove the screw and O-ring. Float Pin O-ring Remove the float pin, float and float valve. Float 11-8