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Adjusting the Thread Tension 57
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Adjusting the Thread Tension
The tensions of the upper thread and of the bobbin thread (thread tension) should be adjusted so that they
are equal.
Changing the tension of the
upper thread
You may need to change the thread tension,
depending on the fabric and thread being used.
■ Correct thread tension
The upper thread and the bobbin thread should
cross near the center of the fabric. Only the upper
thread should be visible from the right side of the
fabric, and only the bobbin thread should be
visible from the wrong side of the fabric.
a Wrong side of fabric
b Right side of fabric
c Upper thread
d Bobbin thread
■ Upper thread is too tight
If the bobbin thread is visible from the right side
of the fabric, the upper thread is too tight.
a Wrong side of fabric
b Right side of fabric
c Upper thread
d Bobbin thread
e The bobbin thread is visible from the right side of
the fabric.
Turn the thread tension dial to the left to loosen
the upper thread.
■ Upper thread is too loose
If the upper thread is visible from the wrong side
of the fabric, the upper thread is too loose.
a Wrong side of fabric
b Right side of fabric
c Upper thread
d Bobbin thread
e The upper thread is visible from the wrong side of
the fabric.
Turn the thread tension dial to the right to tighten
the upper thread.
Note
z If the upper thread is not threaded correctly
or the bobbin is not installed correctly, it
may not be possible to set the correct thread
tension. If the correct thread tension cannot
be achieved, rethread the upper thread and
insert the bobbin correctly.
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