tension thread
My tension on my big machine got off last year. I learned 2 things from my sewing tech guy.
1. I had the machine facing an outside wall. He said to move it to an inside wall, which I did. That helped a lot. The reason for the outside wall not working is that the oil doesn't get to flow through the machine as it needs to do.
2. He also said when adjusting your tension to turn the tension as far as it will go to the right, run the machine on this setting for awhile,and that will unlock anything you might have by mistake locked. I did that, then set it back to the usual setting, and it works fine.
He is very good at helping with sewing machines, and I won't take my featherweight anywhere else!
Hope this helps.
Mariah.