Question about Sewing Machines
Your thread tension needs adjustment.
Most likely it is the lower thread tension (not the upper thread tensioner).
When sewing very thin or very heavy material - it is required to adjust the lower tension as well.
To regulate the lower thread tension - turn the small screw on the tension spring of the bobbin case with a small screwdriver.
To increase tension - turn it clockwise SLIGHTLY.
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Posted on Jun 26, 2009
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Posted on Jan 02, 2017
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