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Adjust the Needle Thread Tension for Straight
Stitch
• Correct tension
(_) Needle thread (Topthread)
(_ Bobbin thread (Bottom thread)
(_ To loosen
(_) To tighten
The ideal straight stitch has threads locked between
two layers of fabric, as illustrated (magnified to show
detail).
If you look at the top and bottom of a seam, notice
that there are no gaps. Each stitch is smooth and
even.
When adjusting needle thread tension, the higher the
number, the tighter the top thread tension.
Results depend on;
stiffness and thickness of the fabric
number of fabric layers
type of stitch
• Tension is too tight
O Needle thread (Top thread)
Bobbin thread (Bottom thread)
(_ To loosen
Right side (Top side)
_) Wrong side (Bottom side)
The bobbin thread shows through on the right side
of the fabric and it feels bumpy, Turn the dial to a
lower tension setting number to loosen the needle
thread tension.
®
• Tension is too loose
(_ Needle thread (Top thread)
Bobbin thread (Bottom thread)
_) To tighten
The needle thread shows through on the wrong side
of the fabric and it feels bumpy. Turn the dial to a
higher tension setting number to tighten the needle
thread tension.
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