If nothing else turns up, try Joe Brogemo at Plaza Machinery in Bethel, VT. He advertises in HSM. I think he has a collection of machinery manuals that he will Xerox and send out copies of (for a fee, of course....) B'ports are so ubiquitous though, you ought to be able to find a manual someplace on your own.
Try to make a living, not a killing. -- Utah Phillips
Don't believe everything you know. -- Bumper sticker
Everybody is ignorant, only on different subjects. -- Will Rogers
Law of Logical Argument - Anything is possible if you don't know what you are talking about.