Sounds like the governor might be sticking. Most Tecumseh's used an internal mechanical governor. Check the linkages and lube them up with some light oil.I have a 10 hp tecumseh on a craftsman RE2000 rider that revs way high (well over 3,600 RPM) when u turn the deck off:crybaby: . I have no clue what is wrong with it.:banghead3 can anyone help me some one told me I have a vacume leak.