Oh by the way, the governer controll arm on those 5 HP briggs are right underneath the gastank, the ajustment screw is near there or, just disconnect the arm from the throttle linkage. If your uncertine on what the governer is, it is a mechanical rev limiter that works this way, when the engine RPM gets up to a certine point, the controll arm is triggered inside the crank case, the controll arm will back off the throttle on the carb so, by removing the governer there is no rev restrictions and the vehicle being operated can move faster but, this does not affect HP.