We may have found other answers which could help you.
Click here for Machine Power Foot
My CG 500/550 Singer Sewing Machine's bobbin isn't working?
Singer 188K1 presser bar stuck?
the thread is bunching on underside of fabric it looks like birdnest?
Presser foot is loose?
Singer sewing machine 626 kno?
Singer zigzag 457 Stylist not threading bobbin/making stitch?