12. CARBURETOR VITALITY 50 Auto Bystarter Wire CARBURETOR (4-STROKE) REMOVAL Remove the met-in box. ( 13-5) Disconnect the auto bystarter connector. Disconnect the fuel tube from carburetor. Fuel Tube Lock Nut Throttle Cable Loosen the throttle cable adjusting nut and lock nut, and disconnect the throttle cable from the carburetor. Adjusting Nut 12-15