Necchi NL11C, Инструкция по эксплуатации

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Stretch overlock (light weight fabrics)
When overedging light woven or loosely knit
fabrics, such as silk and silky knitwear, adjust
the differential feed to a number between 0.7
and 1.0. When sewing, apply gentle tension
to the fabric by holding the seam lightly in
front and back of the presser foot. The setting
depends on the fabric being sewn as well as
the desired amount of stretching. Therefore,
test sew with different settings before sewing
on your project.
Gathered overlock (stretch, knit fabrics)
When overedging stretch fabric, such as knits
and jersey, adjust the differential feed to a
number between 1.0 and 2.0.
The setting depends on the fabric being
sewn. Test sew with different settings before
sewing on your project.
The differential feed system consists of two
sets of feed teeth arranged one behind the
other. Both feed teeth work independently
of each other to provide good results when
sewing on speciality fabrics. When the
amount of feed by the front feed teeth is
changed in relation to the feed by the rear
feed teeth it will "stretch" or "gather" the
fabric.
Use the differential feed to prevent stretching
or distortion of knit fabrics and puckering of
lightweight fabrics.
For overlock stitching on normal fabric, set
the differential feed to 1.0.
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Differential feed system
2
Differential feed dial
Fabric Differential Feed Adjustment Result
Stretch fabric
(knit, jersey)
1.0–2.0
Non-stretch fabric
(cotton, denim)
1.0
Light-weight fabric
(Silk, silky knitwear)
0.7–1.0
Differential feed adjustment