HIGHLEAD DY-850, Instruction Manual

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15. 松线器挺线调节
ADJUST OPENING TIME OF THE TENSION DISCS
压脚在提升范围(2-7 毫米)，夹线器上的夹线板有一个张开期，挺线的时间可以进行调节。调节时，
先卸下机头背面的橡皮塞，旋松膝控提升杠杆(左)螺
钉 A，这时松线凸轮 D 可以左右移动，往右移挺线慢，
往左移挺线快。调节时，如有条件的话，在压脚 C 下
垫上一块与压脚提升高度尺寸相等的垫块，则调节时
方便。调节好，拧紧螺钉 A。
Within the presser foot lift range of 2-7mm opening
time of the tension discs can be adjusted as follows.
Remove the rubber plug from the back of arm and
loosen Screw ( A ) of knee lifter lever ( left ).Move the
tension releasing cam (B) leftward for earlier opening or
rightward for later opening. It will facilitate the
adjustment to put under the presser foot (C) a block as thick as the presser foot lift. After the adjustment, fully
tighten Screw ( A ).
16. 送布牙的调整
ADJUST THE HEIGHT OF FEED DOG
1) 转动主动轮，直至送布牙从针板面突出的最高位置为止。
2) 旋松抬牙轴曲柄(右)螺钉 A。
3) 把牙架 B 按所示的箭头方向移动，定出送布牙高度。
（送布牙高度：送布牙尖端至针板面 B 的间距为 1mm）
4) 调节好后把螺钉 A 旋紧。
1) Turn balance wheel until feed dog is lifted to its highest position from throat plate surface.
2) Loosen Screw ( A ) of feed lifting rock shaft crank right
3) Move Feed Bar ( B ) in the direction shown by the arrow to adjust the height of the feed dog. The
standard height of feed dog is that the top of feed dog is 1mm above Throat Plate Surface ( B ).
4) After the adjustment, be sure to tighten Screw ( A ).