Originally Posted by
irishrose
Candace, when you find out what's going on with the Pfaff, let me know. You just described the Pfaff's 46's problem. If I can get that one to sew straight, I won't have to transport one of mine for mission sewiing. 'Mine' is a simpler model and probably newer, but it sews a tiny ZZ for a SS.
I'm not familiar with this model, but my next step will be likely removing the embroidery device and cleaning and degunking under it. From what I've gleaned in my research the slight zig zag is a symptom of grease or gunk collecting and keeping the needle bar from locking in place. And at least in my model, it's not visible or reachable without removing the embroidery system. Although I oiled and used heat, it's likely not getting into the right spot. At least, this is what I'm hoping to find. But that will be the first step in trying to fix it. Are you a member of the vintage Pfaff group? If you don't like to tinker, it will need servicing to correct the problem.