To use this carburetor, first make sure it's properly installed in your engine. Connect all the fuel lines securely. When starting the engine, follow the normal starting procedure of your equipment. Remember to check the fuel level regularly. For maintenance, clean the carburetor every few months to prevent clogging. Store it in a dry place when not in use to avoid damage from moisture. Also, if you notice any performance issues, like rough idling or poor acceleration, it might be time to inspect the carburetor.