I'm hoping someone can help me out with the diameter of the correct transaxle sheave on an 813. After fighting with trying to get the correct belt (A63K - 65") on my tractor (it was so tight I had to cut it off), I think I found the problem. It looks to me as if someone has changed the sheave on the transaxle for a unit with larger diameter. It barley clears the back wall and there is no way the "correct" belt will fit. I have the parts manuals etc. but the description doesn't give the actual size of the sheave. The one on my tractor does not resemble the picture in the manual. Any chance someone knows the diameter of the stock sheave? Much thanks
ps I got it to work by sub'ing in a larger belt, but it's pretty low-geared now.