10
*
注意：若梭心装入的方向相反，缝制过程中底线会不稳定。
*Caution: If the bobbin is installed in the bobbin case orienting the reverse direction, the bobbin
thread pulling out will result in and inconsistent state.
4
、 线张力的调整方法
/ Adjusting the thread tension
用
1
调节面线张力，用
2
调节底线张力。
Adjust needle thread tension with 1 and bobbin thread tension with 2.
