How to mend Singer 690u Bobbin

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

obtain?

singer HD110?

singer foot pedal ?

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

how to get the tension right on my machine?

Singer model 750 Golden touch and sew?

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

Presser foot is loose?

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

Singer 6234 Tension problems?

Singer 188K1 presser bar stuck?

Singer sewing machine 626 kno?

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

1965 Singer 275k sewing machine foot pedal?

Singer zigzag 457 Stylist not threading bobbin/making stitch?

pedal machine Singer serie K10736204?

machine motor running the wrong way?

Engine revving up ?

Bobbin won't wind?

Singer 507?

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

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

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

Machine Stuck in Reverse?

Why does a sewing machine motor overheat?

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

Replacing a gear in Singer Stylist 457?

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

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