Regulating thread tension – SINGER W7317 User Manual
Page 14
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11. REGULATING THREAD TENSION
For
ordinary
sewing,
the
tension
of
the
upper
and
lower
threads
should
be equal so as to lock both threads in the center of the material iFig. 15
At.
If
one
tension
is
stronger
than
the
other,
imperfect
stitching
will
result.
Fine
material
requires
a
light
tension,
while
heavy
material
requires
more tension to obtain a perfect stitch.
TO
INCREASi
the
tension,
lightly
turn
the
thread
tension
regulator
(Fig. 161 clockwise.
TO
LESSEN
the
tension,
turn
the
thread
tension
regu.ator
to
the
opposite direction, (Counter-clockwise).
Fig. 15
Correct Stitch
Upper Thread Tension too storong
Upper Thread Tension too weak
Lower tension regulating screw
Fig. 17
As all machines are correctly
adjusted
before
leaving
the
factory
and
readjusted
before
the
dealer
delivers
to
you,
the
lower
tension
seldom
requires to be altered,- but if
this becomes necessary, tight
en the screw In the tension
Upper Thread Tension Regulator
..
Fig. 16
spring on the outside of the bobbin case for more tension, or loosen the screw slightly for lesser tension (Fig 17).
IS