Adjusting pressure and feeding of fabric – SINGER W2137 User Manual
Page 17
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When
the
upper
and
under
tensions
are
properly-
balanced,
a
perfect
stitch
will
be
formed
with
both
threads interlocking in fabric. Fig. 17,
When the upper tension is too tight, the lower thread
is pulled up over the upper thread which is lying flat
on the fabric. When the under tension is too tight, the
upper
thread
forms
loops
over
the
lower
thread
lying
flat on the fabric.
Perfect Stitch
a
Upper thread tension too tight
Under thread tension too tight
Fig. 17
ADJUSTING PRESSURE AND FEEDING OF FABRIC
General Sewing.
Usually
for
straight
sewing
and
manual
embroidery,
the
pressure
bar cap or darner release, B, Fig. 18, is at its lowest position and the feed is at its
highest level, with the red triangle on the drop feed knob A, Fig. 19, turned to REG.
Sewing Thin or Light Weight Fabrics.
When
lighter
pressure
is
required
to
sew satisfactorily on thin silk or filmy material, the pressure cap should be about halfway
down. Release all the way by pressing the snap lock. A, Fig. 18, and then press cap
15