挑线部位进油（图 12）/ Oil In The Thread Take-Up Part（Fig 12; 压脚压力调节（图 13）/Adjust The Pressure Of Presser Eoot（Fig 13 - Jack H2 Series Product Instruction Manual

12.挑线部位进油（图 12）/ Oil in the thread take-up part（Fig 12）
挑线，针杆部位采用羊毛软线进油。长期使用
后，如失去正常的进油作用，软（油）线被污染或硬
化，就应更换新的羊毛软线，更换方法如下：
a.打开机头面板，卸下调压螺钉、调压螺钉锁紧螺母
和压紧杆等。
b.再卸下挑线连杆铰链轴（A）和挑线连杆（B）。
c.拉出针杆上套筒的软油线（C）。
d.旋松机壳顶部（左方）上两只油线固定板螺钉，把
油线固定板（D）从机头中取出。
e.重新换羊毛软线。
f.安装的过程是上述过程的相反。
The thread take-up and the needle bar are filled with wool soft thread. After long-term use, if the normal oil
intake function is lost, the soft (oil) thread is contaminated or hardened, a new wool soft thread should be
replaced. The replacement method is as follows:
a. Open the machine head panel, and remove the pressure regulating screw, pressure regulating screw lock nut
and compression rod.
b. Then remove the thread take-up link hinge shaft (A) and the thread take-up link (B).
c. Pull out the soft oil line (C) of the upper sleeve of the needle bar.
d. Loosen the two oil line fixing plate screws on the top (left) of the casing, and take the oil line fixing plate (D)
out of the machine head.
e. Change the wool cord again.
f. The installation process is the opposite of the above process.
13.压脚压力调节（图 13）/ADJUST THE PRESSURE OF PRESSER EOOT（Fig 13）
压脚的压力，要根据缝料的厚度加以调节。首先
旋松调压螺钉锁紧螺母(A)，缝厚料时，应加大压脚压
力，这时将机头顶部的调压螺钉按图 a 所示箭头方向
转动，反之，缝纫薄料时，可按图 b 所示的方向转动
调压螺钉，以减少压脚的压力。最后旋紧调压螺钉锁
紧螺母(A)即成。
压脚的压力，应以能正常推送缝料为宜。
Pressure of presser foot is to be adjust in accordance
with thickness of materials to be sewn.
First loosen Lock Nut(A).For heavy materials, turn the
pressure regulating thumb screw as shown in Fig.3(a) to
increase the pressure, while for light materials, turn the
pressure regulating thumb screw as shown in Fig.3(b) to decrease the pressure. Then tighten Lock Nut(A). The
pressure of presser foot is recommended to be less as long as normal feeding is ensured.
D
B
A
C
A
a
7
12
13
A
b