We may have found other answers which could help you.
Click here for Help Presser Foot
What size needles can I use for my Singer 39a3?
My CG 500/550 Singer Sewing Machine's bobbin isn't working?
Bobbin won't wind?
the thread is bunching on underside of fabric it looks like birdnest?
1965 Singer 275k sewing machine foot pedal?
Singer 201 went bang , smelt and now won’t work?