We may have found other answers which could help you.
Click here for Material Singer Sewing MachineNeed a service manual for a Singer Treadle Sewing Machine Model 66-1?
how to get the tension right on my machine?
Singer 201 went bang , smelt and now won’t work?
Singer zigzag 457 Stylist not threading bobbin/making stitch?
the thread is bunching on underside of fabric it looks like birdnest?
What size needles can I use for my Singer 39a3?