5. FUEL SYSTEM ATV 50 CARBURETOR INSTALLATION O-rings When installation, do not allow foreign particles to enter the carburetor. Check the carburetor insulator and O-ring for wear or damage. Insulator Install the carburetor and insulator onto the intake manifold and tighten the two lock nuts. Connect the fuel tube and auto bystarter wire connector. Route the auto bystarter wire correctly and properly. Nuts Carburetor Cap Fuel Tube Install the carburetor cap. ( 5-3) Install the fuel tube Install the air cleaner onto the carburetor and tighten the band screw. Band 5-11