Look for an older sewing machine repairman. Someone who's been in business long enough to remember the machine.

Parts for that machine may be interchangeable with Singer part of the same era. Check with someone familiar with older machines.

Fabric shops often have business cards of independent repairmen, whom I've always found to be earnest and honest.
Suzi

Most older machines are very similiar. Most attachments are usable on any brand. You only need to know if you have a short shank or a long shank. I have found older manuels at flee markets and antique stores for $1.00. Just flip through one to see the threading diagram. If it is close to yours most all the instructions will be usable. Have you tried a Google search for the manuels? You might find one there. Joyce