Question about Brother LS-1217 Mechanical Sewing Machine
It sounds like you may have uneven tension between the bobbin thread and the upper thread. You can adjust the tension via a screw on the bobbin case. Turn it clockwise to tighten the bobbin thread tension and counter clockwise to reduce it. It's also worth remembering to check the tension on the presser foot for the material you are using. Check also that the shuttle race is clear of lint etc. Hope this helps
Posted on Jul 02, 2007
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