well i got my push mower all sorted now i have a mtd ride on it had a blown motor i rebuilt the engine and it workes fine starts well, runs great, but when you stop it it back fires very loud did put a carby kit in it when i rebuilt it but did not tune it up left it as it was did not want to play with settings was my first rebuild have used it for about 5 hours now with no probs just need to fix this back fire issue and find a nulch plug people i brought it off lost it .