Farmall Cub

where can i download a service manual for a farmall B?

As far as I know, and I have been looking for years for manuals .... there is no where on the net where you can access manuals such as we have here. The closest thing that I have found is the Woods Equipment site... but aside from that there is pretty well zip available. I have mentioned this before, if folks can send me a copy of a manual I will scan it in time.. (as the list of Cub material declines) and host it. I have a number of Letter Series Manuals already on the server and a number in the pipe here almost ready for uploading. The reason why we have such a server available to us, is that many of our members are generous enough to share a copy of their manuals so that they can be scanned and uploaded.

Rudi's Cub Manual Server has a parts manual for A/B. While not a service manual it does have drawings and parts listings, and you can often work out how to service something from the way its put together.
http://www.cleancomputes.com/Cub/A%20-%20B/index.html

You may have to bite the bullet and purchase the service manual.

Binder Books has the service manual for $21.95.

Bob