While you wait for answers, we may have found some information which could help you.
Success
Message
Eumig S910 take up spool not spinning Please Help?
Bell and Howell 626 projector - no volume?
Sears du all 8mm projector?
Bell & Howell projector?
How To open a Reflecta Diamator AFM?
Eumig 610D?
Lamp holder?
How can I change the drive belt on my Eumig 610D projector?
How can I repair take up reel when it doesn't spin?
Take up reel not turning?
How do you replace the belt on a Bell & Howell #1421 Super 8 Projector?
Canon S400 projector - take up reel does not turn?