White 1066 - Regulating the Thread Tension

10.
REGULATING
THE
THREAD
TENSION
for
ordinary stitching
he
tension
of
the
upper
and
lower
threads should
be
equal
so
as
to
lock
both
threads
in
the
center
of
the
material
(Fig.
13).
if
ore
tCflSiOfl
5 stronger
than
the
other,
imperfect
stitching
will
result. Fine
materials
require
a
light
tension,
while
heavy
materials
require
mere
tension
to
obtain
a
perfect
stitch.
TO
INCREASE
the
tension,
turn
the
thread
tension
dial
(Fig.
12)
clockwise.
TO
LESSEN
the
tension,
turn
the
thread tension
dial
in
the
opposite
direction.
(When
regulat’
ing
the
tension
always have
the
presser
foot
down).
As
all
machines
are
correctly
adjusted
before
leaving
the
factory
and
readjusted
before
the
dealer
delivers
them
to
you,
the
lower
tension
seldom
requires
to
be
altered, but,
if
this
becomes
necessary,
tighten
the
screw
holding
the
tension spring
on
the
outside of
the
bobbin
case
for
more
tension,
or
loosen
the
screw
slightly
for
lesser
tension
(Fig.
14).
Correct
Stitch
Needle
Thread
Tension
too
strong
Fig
12
Needle
Thread
Tension
too
weak
Fig
13
tighten
loosen
—9....
Fig
14