Singer 321 KNITTER - Page 82

78
XIV
How to
adjust
when
stitches
come off
hooks or
drop.
Causes:
1.
Insufficient Yarn
Tension
2.
The latches
of
needles do
not open
smoothly.
3.
Speed of
knitting
4.
No
using of
accessory
weights
5.
P.N. and
P.S.
Adjustment
6.
Flash on
the
cutting edge
of
Fabric
Presser
Correcting Methods:
For cause 1.
(a) If the
tension
effected
onto a
yarn used
is
too
weak,
stitches
come
off
hooks
when
Carriage
returns
owing
to an
imperfect
take up
of
slack
yarn.
Accordingly,
adjust
Tension
Spring
with
Auto
-tension
Dial
so
that
it
will
stop
within a
range
illustrated
in
Fig. 112
dependent
upon
the
thickness of
a yarn
used.
Fig.
112
(b)
If a
yarn
is
wrongly
threaded
through
Tension, the
yarn
gets
sagged and
stitches
come
off
hooks
due
to
insufficient
tension. In
this
connection,
thread
a
yarn
through
Tension
Spring
correctly.
Tension
Spring
10 cm
—20cm a
Fig.
113