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7. Adjusting the thread take-up spring
The standard stroke of thread take-up spring 笊 is 8 to
10 mm, and the pressure at the start is 0.1 to 0.3N.
1) Adjusting the stroke
Loosen setscrew 笆, and turn thread tension asm.
笳 .
Turning it clockwise will increase the moving
amount and the thread drawing amount will
increase.
2) Adjusting the pressure
To change the pressure of the thread take-up
spring, insert a thin screwdriver into the slot of
thread tension post 笘 while screw 笆 is tightened,
and turn it. Turning it clockwise will increase the
pressure of the thread take-up spring. Turning it
counterclockwise will decrease the pressure.
笊
笘
笳
笆
8. Example of the thread tension
When using the sewing machine for the first time, adjust the thread tension referring to the table below.
Thread
Polyester filament thread #50
Polyester spun thread #50
Polyester spun thread #60
(Thread clamp OFF)
Cotton thread #50
Cotton thread #20
Material
Wool
Wool
T/C broad
Denim
Denim
Needle thread
tension setting
30 to 35
50 to 55
30 to 35
35 to 45
35 to 45
Thread take-up spring moving
amount [Thread drawing amount]
10mm [13mm]
10mm [13mm]
8 to 10mm [11 to 13mm]
10mm [13mm]
8 to 10mm [11 to 13mm]
Strength
0.1N
0.2N
0.1N
0.1N
0.1N
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