SINGER S18 STUDIO Instruction Manual - Manual (Page 22)

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Balancing Thread Tension
Correct tension:
The ideal straight stitch has threads locked evenly
between two layers of fabric.
For an ideal zigzag stitch, the bobbin thread does not
show on the right side of the fabric, and the needle
thread shows slightly on the wrong side of the fabric.
1 Needle thread
2 Right side of the fabric
3 Wrong side of the fabric
4 Bobbin thread
Different threads and fabric types may require slight
adjustments in the tension. Before making adjustments
determine first that the machine is threaded correctly
and the proper needle is being used.
Adjusting the tension
Thread tension may need adjusted for many reasons:
Thread weight, fabric type, layers of fabric, needle type
and stitch pattern selected.
Before adjusting the tension consult information on the
LCD screen for the recommended tension setting for
selected stitch pattern.
5 Setting mark
6 Tension control dial
7 Recommended tension setting
If needle thread tension is too tight:
The bobbin thread will appear on the right side of the
fabric. Loosen the needle thread tension by moving the
dial to a lower number.
If needle thread tension is too loose:
The needle thread will appear on the wrong side of the
fabric. Tighten the needle thread tension by moving the
dial to a higher number.
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