– 22 –
(9) Returning amount of the looper
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. It is the standard that returning amount of looper
❶
from top end of looper
❶
to the center of needle
bar is 5.9 mm regardless of the needle gauge when looper
❶
is in the extreme right position.
2. Returning amount of looper for each gauge (dimension
A
)
Unit : mm
2-needle
3-needle
Needle gauge Returning amount
A
Needle gauge Returning amount
A
3.2
4.3
―
―
4.0
3.9
―
―
4.8
3.5
―
―
5.6
3.1
5.6
3.1
6.4
2.7
6.4
2.7
(Dimension
A
is the dimension from the center of right needle to the top
end of looper
❶
.)
0 to 0.05 mm
