4-7. Adjusting the thread take-up spring
4
3
4-8. 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 spun thread #50
Polyester filament thread #50
The standard stroke of thread take-up sprng 1 s
8 to 10 mm, and the pressure at the start s 0.1 to
0.3N.
1)
1
2)
2
Needle thread
Materal
tenson settng
Wool
50 to 55
Wool
30 to 35
– 19 –
Adjustng the stroke
Loosen setscrew 2 , and turn thread tenson
asm. 3 .
Turnng t clockwse wll ncrease the movng
amount and the thread drawng amount wll
ncrease.
Adjustng the pressure
To change the pressure of the thread take-
up sprng, nsert a thn screwdrver nto the
slot of thread tenson post 4 whle screw 2
s tghtened, and turn t. Turnng t clockwse
wll ncrease the pressure of the thread take-
up sprng. Turnng t counterclockwse wll
decrease the pressure.
Thread take-up sprng movng
amount [Thread drawng amount]
10mm [13mm]
10mm [13mm]
Strength
0.2N
0.1N