How to mend Singer Melody 20

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

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

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

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

Replacing a gear in Singer Stylist 457?

machine motor running the wrong way?

obtain?

Presser foot is loose?

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

foot pedal 619490-001 CR505?

Singer 522?

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

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

singer foot pedal ?

Engine revving up ?

singer HD110?

Bobbin won't wind?

Why does a sewing machine motor overheat?

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

pedal machine Singer serie K10736204?

Singer 6234 Tension problems?

Machine Stuck in Reverse?

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

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

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

how to get the tension right on my machine?

Singer model 750 Golden touch and sew?

1965 Singer 275k sewing machine foot pedal?

Singer 507?

Singer zigzag 457 Stylist not threading bobbin/making stitch?