While you wait for answers, we may have found some information which could help you.
Success
Message
Stuck Feed dog?
The thread loops under the fa?
Parts spares?
Bernina Update 1630 work light not working?
How do fill a bobber?
Delta NM 902?
Toyota SL3404D Overlocker leaving big loops?
Frister & Rossman Cub7 Sewing Machine?
Sewing machine starts on its own?
Singer 188K1 presser bar stuck?
How can I mend my Frister & Rossmann sewing machine?
Frister & Rossmann cub 7?