A-B1692012-AI CRANK-GOVERNOROne New Aftermarket Replacement Governor Crank Fits Briggs & Fits Stratton Small Engines This aftermarket replacement governor crank (crank governor) Fits Briggs & Fits Stratton lawn and garden equipment engines and helps control engine speed. The mechanical governor system uses gears and flyweights inside the crankcase to detect changes in engine load and adjust the throttle accordingly, keeping engine speed steady whether mowing flat ground or heavy