How the mechanical governor controls the engine speed?

A mechanical governor controls engine speed by using centrifugal force generated by rotating weights. As the engine speed increases, these weights move outward, which activates a linkage system that adjusts the fuel supply to the engine. By reducing fuel flow when the speed exceeds a set point, the governor helps maintain a consistent engine speed, preventing over-revving. Conversely, when engine speed drops, the governor allows more fuel to flow, thus increasing RPM.