While you wait for answers, we may have found some information which could help you.
Success
Message
Bobbin won't wind?
1965 Singer 275k sewing machine foot pedal?
My CG 500/550 Singer Sewing Machine's bobbin isn't working?
Singer 507?
Engine revving up ?
Singer sewing machine 626 kno?
the thread is bunching on underside of fabric it looks like birdnest?
Presser foot is loose?
Singer 188K1 presser bar stuck?
Singer zigzag 457 Stylist not threading bobbin/making stitch?
What size needles can I use for my Singer 39a3?
Singer 201 went bang , smelt and now won’t work?