Kathy, The strands are just double. I can see no way to access the interior of the machine from the top. I think I have to unscrew the bottom and lift the cover off. I'm curious to whether it has an internal belt. At first I thought the motor was shot, now it sounds like the motor is doing its thing, but no action is happening. I don't need this machine, but there are a few cool cams and a buttonholer that are intriguing. I just appliqued a quilt with my Elna and she did her usual perfect work, so I'm not desparate. I just can't see the MW going to the dumpster if I can fix it. I can get a bobbin case when I figure out which one.
Miriam, everything turns, it does stitch by hand and the light works - the switch is inside faceplate cover - how weird is that? My 66 is in my little workspace waiting for Glenn to return, but it may have to move over.
Thank you both.