I would guess drive belt or Motion. I don't have a deck for it yet. Thanks.
Hey sorry about that. I should have posted that. The sn is 309756. So, I believe that would make it a 74.
Doug, That is fantastic. This tractor was in very bad shape when I got it. It was going to be thrown out! I put new coil, points, plug, wires, and it fired right up. Pics would be great. I am a very "visual" person. It is starting to make sense now. Two belts required! I have a manual arriving today from deerelydeparted. I will also pick up the correct belts from the local JD store for I have been hearing that 3rd party belts are not the best fit.