I know that this is an old thread but I am trying to find out more about the model 206k. I was just given a 206k to try and get it running, for my cousin.
I have never seen this machine before and the zig zag apparatus had me stumped until I did a little searching about it.
The whole machine is locked up tight, which won't be a problem but the zig zagger is also frozen. I'm thinking of removing it, to work on it off the machine, but nervous about really messing it up...lol
Anyway, I'm happy to read that some of you love this model.