Jack k4 Series - Lower Cutter Forward;Backward Position

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2、 下切刀前后位置的调整
adjust before and after positions of lower cutter
当下切刀组件由初始位置向左运动，动刀刀尖运动到弯针处，约在弯针宽度中
心，前后 1/2 位置（图 5），调整时可通过松开紧定螺钉 2，再转动偏心销，使动刀
前后移动，调整刀正确位置（图 6）。
When lower cutter components moves from the initial position to the
left , the moving blade moves to the place of looper, roughly in the center
width of the looper, 1/2 position (figure 5), we can by loosening set screw 2,
then turn to made it move back, adjust the cutter correct position (figure 6).
图 5
The center of the
looper