2.9.2 Opening the thread tension for the first bartack
Rule:
The upper thread tension
5
should open when the stitches are
changed from the right to the left lip.
Setting:
–
Turn the crank until the machine stands short from the first bartack.
–
Continue turning the hand wheel and watch at the same time the
stitch position lever
6
as well as the needle thread tension
5
.
–
Loosen the screws
7
.
–
Displace the releasing sheet
8
according to the
Rule
and tighten
the screws
7
.
2.9.3 Opening the thread tension for the final bartack
Rule:
The upper thread tension should open when the machine stands
1 - 2 Stitches
from the final bartack.
Setting:
–
Turn the crank until the machine stands short from the final bartack.
–
Continue turning the machine by the hand wheel and watch at the
same time the stitch position lever
6
as well as the needle thread
tension
5
.
–
Loosen the screws
9
.
–
Shift the releasing sheet
10
according to the
Rule
and tighten the
screws
9
.
5
8
10
3
17
Содержание 577 Series
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