Operation Manual

Upper
tension
(41)
A
=
Setting
mark.
The
normal
tension
setting
is in
the
white
range
between
3
and
5.
The
higher
the
number,
the
tighter
the
tension.
Lower
tension
B
= Regulating
screw.
Turn
it leftfora loosertension,
or right
for
a
tighter
tension.
C
=
Both
tensions
are
correct
D
=
Upper
tension
too
loose
or
lower
tension
too
tight.
E
Lower
tension
too
loose
or
upper
tension
too
tight.
10
The
correct
lower
tension
Let
the
bobbin
case
with
a
full
bobbin
hang
down
freely
by
the
thread.
It
must
not
slide
down
by its
own
weight,
but
should
gradu
ally
move
downwards
when
you
jerk
your
hand
upwards
lightly.
4
4—
E
I