How to mend Singer 4212

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

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

Singer 522?

foot pedal 619490-001 CR505?

Presser foot is loose?

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

Replacing a gear in Singer Stylist 457?

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

machine motor running the wrong way?

Singer zigzag 457 Stylist not threading bobbin/making stitch?

how to get the tension right on my machine?

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

Why does a sewing machine motor overheat?

Hello zigzag industrial singer 457 u105 not stylist is missing stitches?

Singer 507?

where can I get a thread guide post for a Singer Touchtronic?

Singer 6234 Tension problems?

I'm in Australia and need a Bobbin case for a singer 196K205?

Engine revving up ?

singer foot pedal ?

How can I replace the Top Vertical Shaft Bevel Gear for SINGER MODEL 248?

Why won't my Singer Touch Tronic pick up the bobbin thread? ?

Bobbin won't wind?

obtain?

Singer model 750 Golden touch and sew?

pedal machine Singer serie K10736204?

Machine Stuck in Reverse?

My bobbin case for Singer 2662 will not seat right and I cannot sew?

1965 Singer 275k sewing machine foot pedal?

singer HD110?