Jack k4 Series - Upper Thread Trimmer Spring Force

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holder up and down to adjust the amount of engagement between the
fixed knife and movable knife to 0.5-1.0mm (Figure 13).
图13
2、上切刀组弹簧夹紧力的调整
上饰线切线后，被夹紧弹簧夹持，调节夹紧弹簧夹紧力，松开紧定螺母转动紧定螺
钉，可以调节夹紧弹簧的夹紧力，拧紧紧定螺钉夹紧弹簧夹紧力加大，拧松紧定螺
钉夹紧弹簧的夹紧力减小，调整完成后，拧紧紧定螺母（图14）
注意：请在能夹紧上饰线的范围内，尽量把夹持力调整到稍小范围！
2, spring clamping force of up thread trimmer asms adjustment
Trim the upper thread trimmed by the clamping spring to adjust the
clamping force of the clamping spring and release the clamping nut to
rotate the clamping screw to adjust the clamping force of the clamping