60
E. Adjust the passing position of the cam lever for the upper thread holder
When the
thread holder
lever② passes toward the
cam lever for the upper thread holder①
from the sewing starting point
(when the baseline position change cylinder is on), adjust the distance between the two at 0.3~0.5mm by turning the
fastening screw③.
[ Fig. 33 ]
F. Adjust the opening of the thread holder
ⓐ Let the air out.
ⓑ When the thread holder③ comes down until the thread holder lever① touches the cam plate② of the cam lever for
the upper thread holder, the back end of the thread holder③ will be open. Then make the thread holder lever①
overlap with the cam plate② of the cam lever for the upper thread holder by 3~4mm.
ⓒ Adjust the opening to some 4mm by turning the screw④.
[ Fig. 34 ]
0.3~0.5mm
①
②
③
①
④
②
③
(3~4mm)
4mm
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