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How to adjust thread tension
Needle thread
Bobbin thread
A
Fabric (right side)
Well-balanced thread tension
Straight stitch: Needle and bobbin threads interlace with each other at
the middle of the fabric thickness. (
A
)
Zigzag stitch: Needle thread is pulled a little bit to the wrong side
of the fabric.
If the machine is set to “Auto”, it is suitable for most fabrics. However,
adjustment may be necessary according to fabrics and sewing
applications.
If the tension is not correctly set, it will cause imbalanced stitch
formation, puckering, and/or thread breakage.
Weaker tension
Stronger tension
Fabric (wrong side)
Thread tension adjustment dial
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