Originally Posted by IowaStitcher

I had an older Singer with that problem. I got it out after many years of storage and cleaned and oiled it. It ran like a top except for the problem you described. I went to the website Vintage Singers and asked for advice. Got good information there. They suggested the linkage around the fly wheel needed cleaning, lubrication. Suggest you check out this website with your specific question. There is lots of knowledge there.