how do I set the timing on a singer c5050(timing belt sliped)?

Engine revving up ?

Bobbin won't wind?

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

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

Singer zigzag 457 Stylist not threading bobbin/making stitch?

Presser foot is loose?

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

1965 Singer 275k sewing machine foot pedal?

Singer 188K1 presser bar stuck?

Singer 507?

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

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