While you wait for answers, we may have found some information which could help you.
Success
Message
Sewing machine starts on its own?
Frister & Rossmann cub 7?
Sew-tric ltd variable speed motor built 1982 6000rpm r007327?
The thread loops under the fa?
Stuck Feed dog?
Bernina Update 1630 work light not working?
Toyota SL3404D Overlocker leaving big loops?
How can I mend my Frister & Rossmann sewing machine?
Sewing machine issue?
Parts spares?
Singer zigzag 457 Stylist not threading bobbin/making stitch?
How do fill a bobber?