Hi everyone, I have a Troy Bilt Pony Mod, 77 t. I started mowing my lawn this am and the belt came off, I went back to my garage and put it back on, but when I started the engine the belt started smoking, I turned it off and when I tried to run the engine again the cutting deck shakes, and it`s not engaged, also the engine cranks without me sitting on the tractor, which tells me that something is wrong with a safety switch somewhere, but where? If anyone has any ideas, please let me know. Thanks. Latter. Louie.