Originally Posted by
wolph33
I fixed that after I took pics and still the same problem.If you only knew how many times it has been rethreaded.I also cleaned that assembly well.I also tried 2 different types of thread too.
I was going to question how that thread could come into the tension discs, then what looks like out the side and under the spring, but see you have corrected that. I am curious about the bobbin and case. Would that rust on the bobbin affect it? Have you tried the "yo-yo" test of the bobbin case with a different bobbin in place? Did you check the inside of the bobbin case?