19
5) How to Wind lower Thread
[ Fig. 18 ]
4) Bobbin Case Attachment Method
A. Adjust base line of thread take-up lever to meet with U
mark of faceplate by turning sewing machine pulley.
B. Make the thread wornd to left and raise the bobbin and
put into the bobbin case.
C. Make the thread go through thread groove① and pass
through bottom of spring②.
D. Make the thread go through thread groove③once again
and pull it from thread guide part④.
· Properly select and use the thread guide part as
shown in the figure according to the machine type.
E. Confirm whether the bobbin rotate to the left upon taking
out the thread.
F. Raise the grip⑤of bobbin case and put the bobbin case
into hook.
[ Fig. 17 ]
[ Note ]
Please make the amount of thread being wound to be 80%
to the maximum.
①
②
③
④
⑤
④
③
②
①
KM-2070-L
KM-2070-L
KM-2070-7M
KM-2070-M
⑤
⑦
⑥
⑧
A. Lower Thread Winding
a. After passing the thread through hole①, turn it from the
behind of tension adjustment dish②to the front.
b. Bring the thread to bobbin ③ and wind 5~6 times to
clockwise direction from the bottom.
c. Making pulley⑤to reach to V-belt by pushing lever ④
and then operate the machine.
d. Upon the lower thread is wound all to bobbin, the
pulley automatically detaches from V-belt.
e. Proper amount of thread wound to bobbin is about
80%.
B. Adjustment of Lower Thread Winding
a. In case that the lower thread is irregularly wound, adjust by unscrewing and moving the screw⑥ to the left and
right and then fasten it again.
b. Winding amount of the lower thread increases turning the adjustment screw⑦ to clockwise direction and
decreases turning to the opposite direction.
c. Tension adjustment of lower thread being wound to bobbin gets strong turning the nut⑧to clockwise direction
and gets weak turning to opposite direction.
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