Final posting.
It has come to my attention that different years of the 10,000 series used different belts. I spoke to one gentleman that had an older 10m4 that used a 1/2 thick belt. My buddy in Maine has a 73" that also used a 1/2 belt, however my machine which is a 71" (covers 71" and 72") uses a 3/8 belt. Exact size 2/5 x 35.43" (or 3/8x 35.5) part 07204700, stens sells a 3/8 x 36" they say works. Anyway you have to order the correct size belt for your machine, so make sure you get the one yours calls for, they did not use the same size belt throughout production as originally thought. For now I have gone with a kevlar belt 3/8 x 36. That should last a little longer than the stock belt. When I receive it I will make sure it isn't a little too long. I do believe a thicker belt like a 1/2 would last longer than a 3/8. I am considering finding an engine pulley from a 73" that used the 1/2 belt and putting it on my 71" to get a stronger more robust belt. I feel its an option and would be an upgrade. The 3/8 belt is fine, its just using it commercially as I do with a Predator 212, it tends to wear out quicker, obviously, its getting used far more. I wont go out of my way looking for one, when I come across a 73" pulley I'll do the swap than. For now, the kevlar belt should help to make it last longer than the stock. But again, make sure you get the correct belt for your machine, different years used different sizes.
