I have a Janome Artistic SD 18 model which I'm told is the very same thing as a Tin Lizzie. This happened to me as well. I hope I can save you some time and get back to quilting. This was quite an experience but ultimately, fixed. You'll need to remove the screws at the top of the bobbin winder (mine has three). Remove the winder from machine and you will see a "rubber tire" or call it a thick washer that has probably been worn away. This is what caused my bobbin winder to quit working. I took it to my sewing repairman who simply turned the rubber tire over and I got more quilting done. In the meantime, he helped me identify and locate additional washers. Amazon! They are called Bobbin Winder Rubber Tire Ring Standard #15287. A pack of 2 was approximately $6. I ordered a bunch of those. Ultimately, I decided the filings from the tire might cause a problem down the road so I purchased a stand alone Bobbin Winder from fancyquilt.com which is an amazing bobbin winder. I sure hope this helps you as I was down for more time than I ever wanted to be!