Question about Kenmore Drop-In Bobbin 16231 Mechanical Sewing Machine

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Bobbin tension My almost new machine was sewing fine when I broke a needle, on a pin, I think. I replaced with a similar needle, made no other changes, but when I began sewing again, the top stitching was fine but the bottom (bobbin) side was a mess. I was using the stretch stitch, so I changed to a straight and with the same tension, top looked good but there was no tension on the bobbin. I tried increasing and decreasing without any good result. I rethreaded, filled a new bobbin, put that in and out of the holder and my bobbin stitching still is awful. I can't see any way to change bobbin tension--and when would I have changed it? It was sewing fine before. Also, my new needle has the flat side to the back and is up as far as it will go. I am at my wit's end.

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Re: bobbin tension

If the looping is happening on the underside, it is your top tension that is to blame, conversely looping on top is bobbin tension.........take a look HERE for detail on cleaning lint buildup.

Top tension should be set around the middle of the range, usually 4 - 6.

I would not advise playing with bobbin tensions, however, you can take the needle plate off to clean the hook race area (where bobbin case sits) ...this is good housekeeping, my wife does this every time she replaces the bobbin....just take it out and clean the bobbin case and the fixed metal hook race with a small brush to remove lint, if there appears to be fine dirty deposits, a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit will do the trick.


Posted on Jan 27, 2008

Re: bobbin tension

Thanks for the above solution(Jan 27th). My bobbin tension was a mess and I simply took your advice and adjusted the top tension and now it's perfect.

Posted on Feb 20, 2008

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