Adjusting The Stitch Length; Adjusting The Thread Tension - Brother LB6770 PRW Operation Manual

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Adjusting the stitch length

The stitch length can be adjusted to make the stitch
coarser or finer.
Each press of
Each press of
Memo
means the setting cannot be adjusted.
Press
default.
CAUTION
If the stitches are bunched together,
increase the stitch length. Continuing to
sew with the stitches bunched together
may result in the needle bending or
breaking.
makes the stitch finer (shorter).
makes the stitch coarser (longer).
to return the setting to its

Adjusting the thread tension

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
b
c
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.
Note
If the bobbin thread was incorrectly
threaded, the upper thread may be too tight.
In this case, refer to "Installing the bobbin"
(page 27) and rethread the bobbin thread.
a
b
c
d
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.
d
e
Setting the Stitch 59
2