Bernina 530 Record tension assembly
I have a lady drop this machine off for me to look at the tension.
I looked.
I'm confused.
The tension dial doesn't have a stop, so there MUST be a piece missing, right? I can actually spin it right off. Of course I can't find a good photo online. It also has no numbers.
OH, and she'd been running buttonhole thread through the bobbin case with the "default" type tension on the spring and couldn't figure out how no amount of tension adjustments on the top tension would work it out.
Education opportunity after I figure this tensioner out.