Hello,  I am new to the site and to older olivers.  Did have them on the farm when I was a kid.  I currently have a sawmill that is belt driven and am intersted getting more power to run it .  I am currently using a Deere model 60.  I am wondering when Oliver quit making belt pulleys available for their tractors.  We had an 88 diesel and I know it had one.  Did any of the 1800 s have them or something larger?
Thanks,  Jim B.  Petersburg Mich.