7.
THREAD TENSION
7.
THREAD TENSION
7
~
1.
Adjusting the thread tension
Upper thread
Lower thread
Lower thread
7
~2.Adjusting
the presser foot pressure
---------.
-
13-
Good even stitches
Upper thread tension too weak or
lower
thread tension
too strong
Upper thread tension too strong or
lower
thread tension
too weak
II
Upper thread tension
The tension
of
the upper thread
is
adjusted using the
tension thumb nut
G).
To
increase the tension
of
the upper thread,
·~urn
the
tension thumb nut
(f1
to the right.
To
decrease tension,
turn the tension thumb nut
<}1
to the left.
II
Lower thread tension
CAUTION
Turn
off
the
power
switch before removing or
inserting the bobbin case.
The motor will keep turning even after the
power
is
switched
off
as
a result
of
the
motor's inertia. Wait until the motor stops
fully before starting work. The machine may
operate if
the treadle is pressed by rl'istake,
which could result
in
injury.
Adjust by turning the thread tension
nut
(2J
until the bobbin
case will not drop by its
own
weight
while
the thread end
coming out
of
the bobbin case is held.
Adjust the presser foot pressure to
lower
as
much
as
possible
so
that the presser foot can properly hold down
material by turning the
screw
(f•.
From the library of: Superior Sewing Machine & Supply LLC