A-B1590541-AI SPRING-GOVERNOROne New Aftermarket Replacement Governor Spring Fits Briggs and Stratton (B&S) Small Engines This governor spring is a critical engine speed regulation component Fits Briggs and Stratton small engines equipped with a mechanical governor. The spring applies tension to the throttle to hold it at the correct maximum speed setting, keeping the engine running smoothly and safely under varying load conditions. A worn or broken governor spring can cause