How can I mend my sewing machine?

how to get the tension right on my machine?

Bobbin won't wind?

1965 Singer 275k sewing machine foot pedal?

Singer 507?

Presser foot is loose?

Singer 201 went bang , smelt and now won’t work?

What size needles can I use for my Singer 39a3?

Singer zigzag 457 Stylist not threading bobbin/making stitch?

My CG 500/550 Singer Sewing Machine's bobbin isn't working?

the thread is bunching on underside of fabric it looks like birdnest?

Engine revving up ?

Need a service manual for a Singer Treadle Sewing Machine Model 66-1?