That's a bit fancier than my vintage Remington, but I can tell you to try changing settings with the foot down and if that doesn't work, try it with the foot up and make sure the needle is in the most upright position. Some of the machines were fussy about that sort of thing.
I haven't done in for awhile, but I used to pick up post-war Japanese metal machines and clean them up/fix them up for a charity that gave them to recent refugees. I am not particularly handy but with the nice solid machines you can figure out what is catching or whatever, but then again I only went as fancy as a zig zag.
Welcome to the boards! Plenty of like minded folks around here
