I can't seem to find a service/repair manual for my workhorse gt1600. how do you change the drive belt on this tractor. I assume the pto break needs to come off, but how am I supposed to get the belt tension loose enough to slip the belt off the pulley and out of the clutch pulley bracket? I have a really nice oem belt I'd love to get on there. I feel like an idiot not being able to figure it out myself, but I figure there must be a simple procedure....it's a wheel horse after all.