11. CARBURETOR AGILITY RS 50 NAKED AUTO BYSTARTER INSTALLATION Screws Auto Bystarter 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. Float Pin O-ring Remove the screw and O-ring. Remove the float pin, float and float valve. Float 11-8