7-8
The lower looper thread (yellow) appears
on the upper side of the fabric.
Adjust the yellow thread (lower looper)
tension to a higher setting and/or lower
the red thread (upper looper) tension.
3-thread overlock, narrow and wide
Stitch programs 10 and 11
If all the thread tensions are set correctly,
the two looper threads (red and yellow)
meet right at the edge of the fabric.
The needle thread is too loose.
Adjust the corresponding needle thread
tension to a higher setting.
The upper looper thread (red) appears on
the underside of the fabric.
Adjust the red thread (upper looper)
tension to a higher setting and/or lower
the yellow thread (lower looper) tension.
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