You mention approximate belt size? I am sure you know it has to be exact or very very close as belts do not stretch. I have a 3600 with the deck stored away, if you cant find what your looking for then I would be willing to dig it out and have a look for a number.
thank you very much i looked up the pto belt and it came up as a 68 inch belt but when i search the blade belt nothing seems to come up i don't want to assume its one inch bigger like the pto belt if i could get a size i would be set thanks