So I have a 48" snapper with a Briggs 27hp model 44S977-0032-G1. Mower starts up great every time and throttle works perfectly after startup. My problem is once engine gets hot and I have cut for a bit if I disable PTO the engine starts to rev high and the throttle adjustments no longer work. If i engage the blades again and the engine is under load the revs come down but it still wont allow me to adjust the throttle. Once engine cools off everything goes back to normal and throttle works fine again. Just to give an some idea of what I have done recently was replace the rings and jets in the carb. As well as make sure the governor arm was adjusted all the way to the right. Any advice would be awesome.
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