Originally Posted by
BoJangles
Joe, I have looked and looked - it is hard to tell from a photo. It looks ok. I am comparing your assembly area to my 503a - I don't see a difference?
Nancy
Nancy, there is a spring finger on the part that holds the bobbin case in. It's the black part on the right of the case held on by the two screws. It had been moved to the right creating a big gap between the springy finger and bobbin case. I moved it back to match the one on my 401A and now it sews properly.
Joe