I have a yth20-42 that I installed a new motor ..the tractor was given to me without one and also without a deck I found allot of problems with the tractor like reconnecting the foot petal and installing a new safety switch on the seat and some other minor problems but the big problem I'm having now is I can't get it to move ?? the tractor had the original drive belt on it which seam to be in good shape and the connections on the shift control ( forward & reverse ) seams to be good to..but when I try going forward or reverse nothing happens the drive belt might be a little loose but is tight around the pulleys and I don't think that's the problem ?? any help will be greatly appreciated johnny