We may have found other answers which could help you.
Click here for Change Light BurnedBernina Update 1630 work light not working?
Toyota SL3404D Overlocker leaving big loops?
How can I mend my Frister & Rossmann sewing machine?
Singer zigzag 457 Stylist not threading bobbin/making stitch?
How do fill a bobber?
Frister & Rossmann cub 7?