A-B1710028-AI SHAFT-GOV GEAROne New Aftermarket Replacement Governor Gear Shaft Fits Briggs & Fits Stratton Small Engines This governor gear shaft is a key component of the mechanical governor system in Fits Briggs & Fits Stratton small engines. The governor shaft works with the governor gear assembly to sense engine speed and regulate throttle position, maintaining consistent RPMs under varying load conditions and preventing over revving. A worn or damaged governor gear shaft