Thanks Bonny and Joe. I'm sure when DH comes home, he'll know exactly what part you mean but I'm itchy to work on it so can you give me a bit more detail? I've googled the term "upper crank shaft" and didn't get good images with that exact wording. Is this the long horizontal bar that rotates when I turn the handwheel?
Thanks too cpfrog. I don't wind bobbins on this machine, my other one has a much better system. But I engaged and disengaged the bobbin wheel anyway. Wish that worked for me, but not this time.