I used the part number on the manual on this forum to order the belt that is in the right side of tractor that drives the mower deck. It was too long. I also need the belt on the left side (exhaust side) that engages when I lift the engage lever. I measured and it seems the right side is 36" and the left is 34". So im not sure if i add an inch to that or what i should do. The belt i got is a standard half inch belt. Not sure if that is correct either.