We may have found other answers which could help you.
Click here for Singer Futura Timing
What size needles can I use for my Singer 39a3?
Singer 188K1 presser bar stuck?
Presser foot is loose?
Bobbin won't wind?
My CG 500/550 Singer Sewing Machine's bobbin isn't working?
Singer zigzag 457 Stylist not threading bobbin/making stitch?