#90360 - Bell & Howell Design 471 Dual-8mm Movie Projector (1971), 40 pages, fully illustrated. Includes exploded views, parts list, full service and adjustment information, $18.
From...
http://www.photobooksonline.com/books/manual23.html
Also quite a few vids on YouTube.
Good luck...
Peccavi
June 2009
howtomendit.com for free repair help, information and advice.
