We may have found other answers which could help you.
Click here for Sewing Machine Needle Thread
Singer 201 went bang , smelt and now won’t work?
Bobbin won't wind?
1965 Singer 275k sewing machine foot pedal?
the thread is bunching on underside of fabric it looks like birdnest?
Singer zigzag 457 Stylist not threading bobbin/making stitch?
Singer 188K1 presser bar stuck?