SINGER W1665 User Manual
Page 14
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Fig. 16
ADJUSTING THE TENSIONS
Always
adjust
the
upper
thread
tension
with
the
pj*0ss0i* foot dow^n, as the tension is automatically re~
leased
when
it
is
raised.
To
increase
the
tension,
turn
Dial
23
(Fig.
16)
to
the
right,
or
clockwise.
To
decrease,
turn
to
the
left.
The
higher
the
number
on
the dial, the tighter the tension.
Before
adjusting
lower
tension,
be
sure
the
machine
is
threaded
correctly.
When
it
is
necessary
to
change
the bobbin tension, turn small screw (Fig. 17) on side
of the bobbin case clockwise to tighten, counterclockwise
to loosen.
When
the
tensions
are
properly
balanced,
a
perfect
stitch
will
be
formed
with
both
threads
interlocking
in
the center of the fabric. Fig. 18
When the upper tension is too tight, the lower thread
is pulled up over the upper thread which is lying flat
on the top of the fabric. Fig. 19
When the upper tension is too loose, the upper thread
forms
loops
over
the
lower
thread
which
is
lying
flat
under the fabric. Fig. 20
Fig. 18
Fig. 19
Fig. 20