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ADJUSTING
UPPER
THREAD
TENSION
It
is
only
normally
necessary
to
adjust
the
upper
thread
tension
to
achieve
the
correct
balance
between
the
upper
and
lower
threads.
The
higher
the
number
on
the
dial
the
greater
the
tension.
Incorrect
Inside
of
fabric
Upper
thread
ADJUSTING
LOWER
THREAD
TENSION
Lower
thread
tension
can
be
adjusted
by
turning
the
screw
on
the
bobbin
case
slightly
to
the
right
(clock-wise)
to
increase
tension,
(Anti-clockwise)
to
the
to
decrease
tension.
As
a
general
guide
only,
the
user
can
achieve
the
correct
tension
for
normal
sewing,
by
carefully
susncriding
the
wound
bobbin
in
its
case
by
the
thread.
If
the
bobbin
and
case
immediately
fall
to
the
ground,
the
tension
is
too
loose
and
should
be
increased.
The
correct
tension
is
obtained
when
a
slight
jerk
of
the
thread
causes
the
bobbin
to
drop
a
short
distance
only.
If
this
action
does
not
move
the
bobbin
the
tension
is
too
tight
and
should
be
loosened
until
the
desired
effect
is
achieved.
S
Correct
Fabric
Upper
thread
Bobbin
thread
Increase
Decrease
16