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28
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2
■ Upper tension is too loose
Loops appear on the back of the fabric.
Note
● If the upper thread was incorrectly threaded,
the upper thread may be too loose. In this
case, refer to “Upper threading” on page 17
and rethread the upper thread.
Solution
Increase the tension by turning the upper tension
control dial to a higher number.
1 Surface of fabric
2 Back of fabric
3 Upper thread
4 Lower thread
5 Loops appear on back
of fabric
1
2
3
4
5
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