Bernina Virtuosa 153 Instruction Manual & Sewing Manual page 12

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Thread cutter
Stitch plate
1
1
5
5
/
/
1
1
/
/
1
1
/
/
5
5
/
/
1
1
8
8
4
4
4
4
8
8
25
25
20
20
10
10
10
10
20
20
25
25
Thread tension
3
A
5
Feed-dog
· pull both threads from front to back over
·
the cutter
· the threads release as soon as the first
·
stitch is sewn
Stitch plate markings
· the stitch plate is marked with seam
guide lines in mm and inches
· the millimetre markings are at the front
· the inch markings are at the back
· the measurements indicate the distance
from the needle to the lines
· the needle insertion point is 0
(= needle position centre)
· lines are provided to the right and left
of the needle
The basic setting
· is indicated when the red line on the
·
tension adjustment wheel is in line with
·
the marking A.
· the tension does not need adjusting for
·
normal sewing work.
· for special sewing work, the tension can
·
be adjusted to suit the fabric.
To reduce the tension
· turn to between 3 and 1
To increase the tension
· turn to between 5 and 10
Button flush with base plate =
sewing position
Button depressed = feed-dog is lowered
for free-hand sewing
·
(darning, embroidery, etc.)
Setting up the machine
· they are very useful guide lines for
precise seaming
· the horizontal lines are useful for
buttonholes, etc.
The tension can react differently when
sewing with unusual threads and it is
necessary to adjust the tension and select
a needle which suits the thread.
For example:
Tension
Metallic thread
approx. 3
Monofilament
approx. 2– 4
11
Needle
90
80

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