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INSTRUCTION MANUAL
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6. THREAD TENSION
6-1 Adjusting the thread tension
CAUTION
Turn off the power switch before removing or inserting the bobbin case.
The machine may operate if the treadle is depressed by mistake, which could result in injury.
Good even stitches
Upper thread
Lower thread
<
Lower thread tension
>
Adjust by turning the adjustment screw(1) until the bobbin
Case drops gently by its own weight while the thread end
Coming out of the bobbin case is held.
<
Upper thread tension
>
After the lower thread tension has been adjusted, adjust the
Upper thread tension so that a good, even stitch is obtained.
1) Lower the presser foot.
2) Adjust by turning the tension nut(2).
Upper
thread
tension
too
weak
or
lower
thread
too
strong
Increase
the
upper
thread
tension.
Decrease
the
lower
thread
tension.
Upper
thread
tension
too
strong
or
lower
thread
too
weak
Decrease
the
upper
thread
tension.
Increase
the
lower
thread
tension.
Becomes stronger
Becomes weaker
Becomes stronger
Becomes
weaker
Содержание H9199
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Страница 7: ...SAFEY INSTRUCTIONS V ...
Страница 8: ...SAFEY INSTRUCTIONS VI ...
Страница 9: ...SAFEY INSTRUCTIONS VII ...
Страница 16: ...操作说明 4 3 1 台板加工图 台板的厚度应达 40mm 能够承受缝纫机的重量 并经的起缝纫机的震动 请在如图所示位置上钻孔 3 2 安装方法 1 油盘 1 头部防震垫 左 2 个 2 头部防震垫 右 2 个 3 油盘 ...
Страница 18: ...操作说明 6 6 线架 1 线架 注意 将螺母 4 拧紧以便将两个橡皮垫片 2 和垫圈 3 夹紧 使线架 1 不会移动 7 膝控 1 膝控碰块 2 螺栓 松开螺栓 3 将膝控碰块 1 移至易于 使用的地方 ...
Страница 20: ...操作说明 8 3 4 连接线缆 ...
Страница 51: ...INSTRUCTION MANUAL 39 3 4 Connect cable ...
Страница 76: ...2 针杆 挑线装置 Needle bar and thread take up mechanism 64 ...
Страница 78: ...2 针杆 挑线装置 Needle bar and thread take up mechanism 66 ...
Страница 80: ...3 膝控压脚装置 Knee lifter mechanism 68 ...
Страница 82: ...4 送料装置 Feed mechanism 70 ...
Страница 84: ...4 送料装置 Feed mechanism 72 ...
Страница 88: ...7 润滑系统 Lubrication 76 ...
Страница 90: ...8 穿线装置 卷线装置 Bobbin winder mechanism Threading mechanism 78 ...
Страница 92: ...9 切线装置 Thread trimmer mechanism 80 ...
Страница 96: ...16 附件 Accessories 84 ...
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