SEWING BASICS
28
Thread tension
The thread tension will affect the quality of your
stitches. You may need to adjust it when you change
fabric or thread.
Mem
•We recommend that you do a test sewing on
scrap of a fabric before you start to sew.
■
Correct tension
Correct tension is important as too much or too little
tension will weaken your seams or cause puckers on
your fabric.
3
1
Wrong side
2
Surface
3
Upper thread
4
Lower thread
■
Upper tension is too tight
Loops will appear on the surface of the fabric.
•If the bobbin thread was incorrectly threaded, the
upper thread may be too tight. In this case, refer
to “Lower threading” (page 14) and rethread
the bobbin thread.
3
5
1
Wrong side
2
Surface
3
Upper thread
4
Lower thread
5
Loops appear on
surface of fabric
Solution
Reduce the tension by turning the upper tension-
control dial to a lower number.
4
3
5
Mem
•When you finish sewing, remove the bobbin
cover and then make sure that the thread is shown
as below. If the thread is not shown as below,
the thread is not inserted through the tension-
adjusting spring of the bobbin case correctly.
Reinsert the thread correctly. For details, refer to
page 14 to 16.
■
Upper tension is too loose
Loops appear on the wrong side of the fabric.
•If the upper thread was incorrectly threaded, the
upper thread may be too loose. In this case, refer
to “Upper threading” (page 16) and rethread
the upper thread.
1
3
1
Wrong side
2
Surface
3
Upper thread
4
Lower thread
5
Loops appear on
wrong
Solution
Increase the tension by turning the upper tension-
control dial to a higher number.
4
3
5
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