(Choke Type: Electric Choke. 1) Compatible Models: Specially designed for 1403 500 CFM 4 Barrel Electric Choke Carburetor. Features: 4 Barrel, 500 CFM, Square-Flange. - Carburetor Structure: The components of a carburetor usually include a liquid fuel storage chamber, a choke, an idling (or slow-running) spout, a main spout, a venturi-shaped air-flow restriction, and an accelerator pump.
