Singer 211G166 - Tension Control and Adjustment; Adjusting Needle and Bobbin Tension; Interpreting Tension Results

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10
TENSION CONTROL (Figures
17,· 18,
19, 20 and
21.)
The tension
of
the needle thread is
regulated
by thumb nut
1,
and should only
be
..
changed
when
the
presser
feet
are
down
and
the tension
is
not
released.
Turning
the
nut
clockwise increases and turning it
counter-clockwise
decreases the tension.
The tension
of
the bobbin thread is
regulated
on the bobbin case tension spring
by
means
of
the
adjusting screw
2.
Turning it clockwise increases and
turni_ng
it
counter-clockwise
decreases
the
tension·. ·
With
correctly
adjusted tensions, the
needle
and
bobbin threads should
be
locked in
the
center
of
the
material as shown in Figure
19.
If
the tension on the
needle
thread is too
light,
or
if
that
on the bobbin
thread
is
too
loose,
the
need!~ thread will
lie
straight along
the
upper surface
of
the material as
shown in Figure
20.
If
the
tension on the bobbin thread is too
tight,
or
if
that
on the
needle
thread is too
loose,
the
bobbin thread will
lie
straight along
the
underside
of
the material as shown
in Figure 21.
1
~
LE~S
-)
TENSION
Figure
17
Figure
18
Figure 19
Figure 20
Figure
21