tension on a T&S

kathieloMarch 10, 2011

How can I adjust the lower tension on my Singer T&S 620. I am working on Tshirt knit and the top stitches are fine but the bobbin stitches are crooked and loose. Can I do this myself or do I have to take it to a repair shop? I tried to tighten the screw on the bobbin case but it won't move.


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You need to loosen the screw on the bobbin case, and tighten the tension on the top. Your top thread isn't tight enough to pull the bobbin thread toward the top and make the stitch properly.

Try changing your needle to a ball point, too.

    Bookmark   March 12, 2011 at 6:43AM
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Kathieo - how did you make out? Just curious.

    Bookmark   March 14, 2011 at 1:23PM
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Well it was an easy fix in the end. Before I heard from evaf I started with the simplest....rethreading the machine. I already had a ball point needle in so I knew that wasn't the problem. I cleaned the tension discs and rethreaded and that solved the problem. Working like a charm now.

Thanks for asking.

    Bookmark   March 15, 2011 at 8:52AM
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