Update from a couple of weeks ago about getting a belt of the proper length. Ordered A4897R from the dealer and it fits, not a lot of slack to tension it but at least it will go around all three pulleys.
Summary is if you order an after market belt that they say is equivalent to the A4897R you will get one that is 1/2 width and the pulleys are 3/8 on the later S/N tractors according to the parts book.
Summary is if you order an after market belt that they say is equivalent to the A4897R you will get one that is 1/2 width and the pulleys are 3/8 on the later S/N tractors according to the parts book.