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Gemsy GEM1900A - 爪脚张开拨杆的调整 Adjusting the Button Clamp Jaw Lever; 纽扣爪脚上升量的调整 Adjusting the Lifting Amount of the Button Clamp; 压脚压力的调整 Adjustment of the Pressure of the Work Clamp Unit

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7.爪 Adjusting the button clamp jaw lever
CAUTION
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
0.5-1mm
Bring the machine to its stop-motion state. Then lift button
clamp ①. Loosen screw in the button clamp jaw lever and
adjust so that a clearance of 0.5 to 1mm is provided between
button clamp jaw lever and hinge screw when placing a
button in between button clamps ①. Then tighten screw in
the button clamp jaw lever.
8.纽 Adjusting the lifting amount of the button clamp
CAUTION
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
A
B
2
Loosen two setscrews ①, and move moving plate back and
forth in the direction of arrow to adjust. The lifting amount of
the button clamp will be decreased when moving plate is
moved in the direction of A, and be increased when it is moved
in the direction of B. After the adjustment securely tighten set-
screws .
A
B
9.压 Adjustment of the pressure of the work clamp unit
CAUTION
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
使
The pressure of the work clamp unit should be minimized as
long as the material does not warp during sewing. Loosen
adjusting screw and turn adjusting screw to obtain the af-
orementioned pressure.
使Operation Instruction
74

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