Hi,
For a free manual for your machine go to
www.ismacs.net/white/home.html
scan down and click on manual.. Be patient as it takes a while for the manual PDF to load. It's I think 26 pages. It will also show a picture and description of how to get out the bobbin case. I have the same machine except it is in a treadle cabinet, so if you have any other questions, let me know.
Judy