It could be your thread. I hope you aren't using polyester thread. I worked on 2 machines 3 weeks ago for a lady and she was using it and when I put my cotton on it ran just wonderful. I'm just giving a suggestion. I also worked on one and it wouldn't use the bobbin she had. I looked hard in my bobbins and put one in that had just One hole in it and the machine came right along and sewed.
Last edited by barny; 08-07-2019 at 05:46 PM.