We may have found other answers which could help you.
Click here for Running Works FineFrister & Rossmann Beaver 9 Mk2 Electric Won't pick up Bobbin Thread?
Frister & Rossmann Cub 4:?
Frister & Rossmann cub 7?
How can I mend my Frister & Rossmann sewing machine?
how to fix electrical connection on frister & rossmann 45?
Frister & Rossmann sewing machine - Dial to make zig zag broken!?