Bernina Bernette 56 Instruction Manual - Page 45

Thread Tension - problems

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--"] c A-1 - B-1 - Thread Tension Thread tension will affect the quality of your stitches. lt may need to be adjusted when you change fabric or thread type. NOTE: It is recommended that a test sample be made on a fabric scrap before sewing on your project. The.basic thread tension setting is "5". Possible Problems and How To Correct Them A Upper tension is too tight. locks appear on the surface of the fabric . A~1 Upper tension cOntrol dial Decrease the tension by turning the dial to a lower number. B Upper tension is too loose. 1 locks appear on the reverse side of the fabric . B~1 Upper tension control dial Increase the tension by turning the dial to a higher number.

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Thread Tension
Thread tension
will
affect the quality
of
your stitches.
lt
may need
to
be
adjusted when you change fabric or thread type .
NOTE:
It
is
recommended that a
test
sample be made on a fabric scrap before
sewing on your project.
The.basic thread tension setting
is
"5"
.
Possible Problems and
How
To
Correct
Them
A
Upper tension
is
too tight.
locks
appear on the surface
of
the fabric .
A~
1 Upper tension
cOntrol
dial
Decrease the tension by turning the dial to a lower number.
B
Upper tension
is
too loose.
1
locks
appear on the reverse side
of
the fabric .
B~
1 Upper tension control dial
Increase the tension by turning the dial to a higher number
.
<D
Reverse
®
Sutface
NOTE:
The lower thread tension
has
already been adjusted at the factory for
general
use.
For most sewing applications, no adjustment
is
needed .
When
sewin~
with
thin thread on thin fabrics, the thread tension can-
not be adjusted adequately with the upper tension control diaL There-
fore, tne thread tension must be adjusted according to the procedure
deScribed
below
.
• c
lower tension
is
too loose.
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•
Locks appear on the surface
of
the fabric.
Decrease the thread tension by turning the dial to a lower number
.
If the result
is
still not satisfactory, then adjust the bobbin thread
tension
as
explained in
c~
1 .
C-1
Bobbin
Increase the tension in the bobbin by turning the screw with a
small screwdriver in a clockwise direction. However,
do
not turn
the screw more than one full turn,
Remember to return the screw to its original setting before
start~
ing your next project.
•
D
Correct tension
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Correct tension
is
important since too much
orloo
little tension
will
weaken your
seams
or cause puckers in your fabric.
<D
Reverse
®
Surface