While you wait for answers, we may have found some information which could help you.
Click here for Model Belt ReplacementHow to switch on light of sewing machine?
Parts spares?
Sew-tric ltd variable speed motor built 1982 6000rpm r007327?
Sewing machine starts on its own?
Frister & Rossmann cub 7?
Toyota SL3404D Overlocker leaving big loops?