- Choke: A plate or valve that blocks off the airflow to the carburetor, enriching the air-fuel mixture for easier starting when the engine is cold.
- Float: A ball or other device that controls the fuel level in the carburetor bowl.
- Float chamber: A reservoir for fuel that is kept at a constant level by the float.
- Idle circuit: A series of passages and jets that control the amount of air and fuel mixture that flows through the carburetor when the throttle is closed.
- Main circuit: A series of passages and jets that control the amount of air and fuel mixture that flows through the carburetor when the throttle is open.
- Mixing chamber: A chamber where the air and fuel are mixed together.
- Needle valve: A valve that controls the amount of fuel that flows into the float chamber.
- Pilot jet: A small jet that controls the amount of air that flows through the idle circuit.
- Power valve: A valve that opens to allow more fuel to flow into the carburetor at higher engine speeds.
- Throttle body: The housing of the carburetor that contains the throttle valve.
- Throttle valve: A butterfly valve that controls the amount of airflow through the carburetor.
- Venturi: A narrow section of the carburetor barrel that increases the air velocity and helps to draw fuel out of the carburetor bowl.
