Welcome aboard!
My vintage machine has the two plug ins, one for the foot pedal and one for basic power, I dropped the foot pedal and after some 60+ years the bakelite/early plastic channel inside it shattered and the foot shorted out. If I changed the cords, the machine ran in full on mode, the foot pedal didn't control it, so I had to get a "new to me" foot.
So the Sewmor are what we call "post war Japanese badged machines" singer clones, sturdy little workhorse machines.
Here's a link to the manual.
https://www.sewingmachinemanual.com/...anual-606.html