Zenith (STROMBERG) 4-Barrel Carburetors: Description: Notes

Carburetor is of four barrel, two stage design. Primary stage includes idle system, slow speed circuit, accelerator pump system, and main metering system. In addition, fluid from sub-zero starting device, if equipped, and oil from metering oil pump is admitted into primary stage.

Secondary stage contains secondary vacuum diaphragm operating system, stepping circuit, and main metering system. Choking is accomplished by semi-automatic or fully automatic choke. Carburetor also contains fuel return circuit and electric idle switch.