HIGHLEAD DY-850, Инструкция по эксплуатации

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2) 缝线张力
Adjusting of thread tension
3) 面线张力调节
Adjusting of upper thread tension
(1)
按图示旋转夹线螺母调节面线张力。
(2)
应根据底线张力调节面线张力。
(3)
通常，机器在出厂前，挑线簧调整妥善。在缝纫
特殊的缝料或特殊的缝线时，需要进行调整。
(1) Upper thread tension can be adjusted by thread
tension nut.
(2) Upper thread is to be adjusted according to the lower
thread tension.
(3) For special fabric sewing with special thread, the
desired tension can be obtained by adjusting the strength
and operating range of thread take-up spring.
4) 底线张力调整
Adjusting of lower thread tension
(1)
用小号螺钉起子旋转梭心套上的梭皮螺钉（
A
）
加大或减少底线压力。
Lower thread tension can be adjusted by screw (A).
(2)
一般来说，梭心装入梭心套后，拉出缝线穿过梭
心套线孔，捏住线头吊起梭套，梭心套则能缓缓下
落，就可以使用。
The thread tension can be checked as the
following. Hold the end of pulled out thread and if the
bobbin case fall slowly, the tension is proper.