#1405 600 CFM 4 Barrel Carburetor w/ Manual Choke (Non-EGR). Specification: Carburetor Barrels: 4; CFM: 750; Choke: Electric; Flange Type: Square; Fuel Inlet: Single. Specification: Carburetor Barrels: 4; CFM: 600; Choke: Manual; Flange Type: Square; Fuel Inlet: Single; Fuel Type: Gasoline.