– 6 –
(2) Adjusting the rocking thread take-up
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Standard adjustment
1. Length of the rocking thread take-up
(1) It is the standard that the length of rocking thread take-up
❷
from the center of the shaft of rocking
thread take-up support arm
❹
to the thread hole face of rocking thread take-up
❷
is 83 mm.
❶
❷
❹
83mm
2. Position of the rocking thread take-up
(1) Install so that rocking thread take-up
❷
is flush with rocking thread take-up
❷
when the needle bar is
in its lowest position.
Flush
3. Timing of the rocking thread take-up
(1) It is the standard timing that rocking thread take-up
❷
is in its lowest position as well when the needle
bar is in its lowest position.
Timing of rocking thread take-up
❷
is performed by adjusting the position of rocking thread take-up
ball arm
❽
.
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 changing the timing of rocking thread take-up
❷
.
(2) Relation between the timing of the rocking thread take-up
❷
and the size of needle thread loop is as
shown in the table on the next page.
↑
Anti-operator's side
Operator's side
↓
8 mm
