A-B1796193-AI KIT-CHOKE SHAFTOne New Aftermarket Replacement Choke Shaft Kit Fits Briggs & Fits Stratton Small Engines This choke shaft kit is a carburetor service component Fits Briggs & Fits Stratton (B&S) small engines. The choke shaft controls the choke valve inside the carburetor, regulating the air fuel mixture during cold starts and engine warm up. It is used on select 12 cu. in. L Head engines, including most 122000 series models. This kit supersedes earlier Fits Briggs &