–
7
–
(2) Adjusting the rocking thread take-up
Standard Adjustment
1. Length of the rocking thread take-up
(1) It is the standard that the length of rocking thread take-up
2
from the center of the shaft of rocking thread take-up
support arm
4
to the thread hole face of rocking thread take-up
2
is 95 mm.
2. Position of the rocking thread take-up
(1) Install so that rocking thread take-up
2
is flush with rocking thread take-up
2
when the needle bar is in its lowest
position.
3.
Timing of the rocking thread take-up
(1) It is the standard timing that rocking thread take-up
2
is in
its lowest position as well when the needle bar is in its lowest
position.
Timing of rocking thread take-up
2
is performed by adjusting
the position of rocking thread take-up ball arm
8
.
4. Relation between the timing of rocking thread take-up and
the needle thread loop
(1) When using the excessively stretchable thread or the hard-
to-stretch thread, the size of needle thread loop can be
changed by by changing the timing of rocking thread take-
up
2
.
(2) Relation between the timing of the rocking thread take-up
and the size of needle thread loop is as shown in the table
on the next page.
(The relation becomes reverse when using the needle bar
thread take-up = standard seams and when it is not used =
soft seams. So, be careful.)
1
2
4
95 mm
2
7
3
6
2
5
Flush
!1
3
8
4 mm
Anti-operator’s side
Operator’s side
9
!2
/
/
!0
