– 18 –
3-4. Threading the machine head
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
3-5-1. Adjusting the needle thread tension
1) Turn thread tension No. 1 nut
❶
clockwise (in di-
rection
A
), to shorten the thread length remaining
on the needle after thread trimming or counter-
clockwise (in direction
B
), to lengthen the thread
length.
2) Turn thread tension nut
❷
clockwise (in direction
C
) to increase or counterclockwise (in direction
D
) to reduce the needle thread tension.
3-5-2. Adjusting the bobbin thread tension
1) Turn tension adjusting screw
❸
clockwise (in
direction
E
) to increase or counterclockwise (in
direction
F
) to reduce the bobbin thread tension.
3-5. Thread tension
❸
E
F
❶
❷
A
B
C
D
❶
❷
❺
❹
❸
❻
❼
❽
❾
(Note)
Do not pass this thread
through section
A
.
A
[S type]
[H type]
[NB type]
[0B type]
(Note)
Be sure to pass the thread
through the section
B
.
B
