HIGHLEAD DY-850, Instruction Manual

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10
5) 剪线后存留机针线长度的调整
Adjustment
of remaining needle thread length after
thread trimming
(1)
拧转夹线螺钉 ① 进行调节。
(2)
顺时针旋转，留在机针上的线变短。
逆时针旋转，留在机针上的线变长。
(1) Turn the pretension nut
①
and adjust.
(2) When turned clockwise, the length of thread left in
the needle will be short. When turned counterclockwise,
the length of the thread left in the needle will be long.
12. 机针与旋梭同步调节
TIME NEEDLE TO ROTAING HOOK
1) 机针位置的调节：
Adjusting the needle position
用手转动主动轮，使针杆 C 下降至最低位置，卸下面板 A 上的橡皮塞，旋松针杆 C 上的针杆接头螺
钉 B，上下移动针杆 C，定出同步位置(针杆的同步位置：针杆下降至最低位置时，针杆上的同步标记 E
与套筒 D 下端面成一致的位置，这时机针线孔的中心 F 与旋梭内面 G 也成一致位置)。 旋紧针杆接头螺
钉 B，塞上橡皮塞即成。
Turn balance wheel by hand to bring Needle Bar ( C ) to the lowest position of its stroke. Remove rubber
plug from Face Plate ( A ).Loosen Set Screw ( B ) of needle bar adaptor. Move Needle Bar ( C ) vertically to
adjust needle timing. After the adjustment, tighten Set Screw ( B ) and put in the rubber plug. The standard
needle timing is to align Timing Mark ( E ) on the needle bar and the bottom of Needle Bar Bushing ( D ) and
meanwhile align the Inner Surface ( G ) of the hook and the center of Needle Eye ( F ) when the needle bar gets
down to its lowest position.