I bought my 48 Exmark last year and 1st gear it would not pop wheelie and all the gears bogged from the start and 5 gear wouldn't work.And it got worse by the fall and it wouldn't go up the truck. Looked at it this morning and the Belt was loose a little, I tighten the gold pulley and now it does wheelies in all gears and flies like a bastard. The old guy that sold my the 2003 15 HP kawasaki thought the tranny was bad but it was the belt. I'm getting a trailer this saturday can't wait. The ramps made the pulley and belt loose. I'm on a roll I fixed the temp sensor on my LT1.