– 26 –
(2) When you want to change the tension of the thread take-up spring
1) Tension of thread take-up spring
❶
on the right
is adjustable by turning spring stud
❷
to the right
to increase or to the left to reduce.
2) Tension of thread take-up spring
❸
on the left is
adjustable by turning spring stud
❹
to the right
to increase or to the left to reduce.
1) Stroke of thread take-up spring
❶
on the right is adjustable by moving thread tension No. 2 asm.
❸
to
the left or right after loosening thread tension No. 2 setscrew
❷
.
2) Stroke of thread take-up spring
❹
on the left is adjustable by moving thread tension No. 2 asm.
❻
to the
left or right after loosening thread tension No. 2 setscrew
❺
.
3) Move thread tension No. 2 asm.
❸
and
❻
to the right to increase or to the left to decrease the stroke of
the thread take-up spring.
(1) When you want to change the stroke of the thread take-up spring
[A type and F type]
❹
❸
❷
❶
❼
❽
❾
❷
❻
❸
❹
❺
❶
To turn
When adjusting the stroke of thread take-up springs
❶
and
❹
, thread release pins
❼
and
❽
should not come in contact with disk release plate
❾
.
In addition, for LH-3528A, 3528A-7 make sure that thread tension disks
and
securely rise
when hand lifter lever
is turned in the direction of the arrow.
To Next Page
Loading...
