Have you checked to see if the bobbin shuttle mechanism is all there? It and the bobbins are the pieces that often get separated from the machine. My DH got into collecting old sewing machines a couple years ago. He has over 100, and about 20 are treadles. Now he is collecting coins. They take up much less space. Our daughter will not let hem store anymore machines in her sheds. By the way, anytime he comments on my fabric stash, and it is big, all I have to do is start talking about sewing machines. He actually agreed he may sell some of them soon. Whoopee.