－
30
－
7-14. Adjustment of the thread tail after the trimming
Adjust the thread tail (No.3) from the needle
after the trimming with turning the nut (No.2) of
the pre-tension (No.1).
If turn the nut (No.2) to the clockwise, the thread
tail becomes shorter and if turn the nut (No.2) to
the counter-clockwise, the tread tail becomes
longer.
7-15 Cancellation of the trimming function
If the automatic trimming is not required during the sewing operation, cancel the trimming
function with the setting panel of the control box. For the detail of this instructions, please refer
to the paragraph [4.Program 4 mode display] on
9
Basic mode operation of the
Technical Manual Control Unit Section .
7-16. Adjustment of the upper thread tension release
[Note]
(a)
If the upper thread tension release does not work properly when the upper thread is
trimmed automatically, the thread tail from the needle becomes shorter then, it
induces the skip stitch happening or pulling the thread tail out of the needle at the
start of the sewing.
(b)When the upper thread tension release is activated, the discs (No.1) the upper
thread tension regulator opens 0.8
～
1.0mm.This is the normal condition of the
discs (No.1) opening. For this adjustment, take the following procedure.
2
1
3
1
1
2
3
0.8
～
mm
1.0
