– 17 –
(2) When you want to change the tension of the thread take-up spring
1) Tension of thread take-up spring
1
on the
right is adjustable by turning spring stud
!3
to
the right to increase or to the left to reduce.
2) Tension of thread take-up spring
4
on the left
is adjustable by turning spring stud
!4
to the
right to increase or to the left to reduce.
1) Stroke of thread take-up spring
1
on the right is adjustable by moving thread tension No. 2 asm.
3
to the left or right after loosening thread tension No. 2 setscrew
2
.
2) Stroke of thread take-up spring
4
on the left is adjustable by moving thread tension No. 2 asm.
6
to the left or right after loosening thread tension No. 2 setscrew
5
.
3) Move thread tension No. 2 asm.
3
and
6
to the right to increase or to the left to decrease the
stroke of the thread take-up spring.
When adjusting the stroke of thread take-up springs
1
and
4
, thread release pins
7
and
8
should not come in contact with disk release plate
9
.
In addition, make sure that thread tension disks
!1
and
!2
securely rise when hand
lifter lever
!0
is turned in the direction of the arrow.
4-12. Thread take-up spring
(1) When you want to change the stroke of the thread take-up spring
7
8
9
!1
!2
!0
2
6
3
4
5
1
To turn
!4
4
!3
1
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
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