21 BA_VEB100-2-4-5_A5-3_230118_en.doc
4.4 Thread tension
Depending on the quality, configuration and thickness of the thread as well as the
sewing material, the thread tension is set using the knurled nut ((2) Fig. 4) until the
desired seam shape is created.
4.5 Thread take-up lever
The thread take-up lever (8) shown in Fig. 4 prevents the thread from twisting and the
loop from collapsing. It also ensures that the loop is properly caught by the looper and
needle.
The seam shape becomes homogeneous and the edge of the hem free of tension.
The behaviour of the thread take-up lever is affected by the thread movement (choice
of eye) and thread tension.
4.6 Stitch depth control
The stitch depth controller makes it possible to adjust the distance between
the upper edge of the plunger and the needle radius so that the plunger is lifted or
lowered, depending on the thickness of the material to be sewed. This determines
how deep the needle can penetrate into the layer of material between the plunger and
cloth retainer. This value is referred to as the stitch depth.
4.6.1 Adjusting the stitch depth
The stitch depth is set using the control button ((5) Fig. 4) and is located on the front
side of the machine.
Turn the control button to the left (+) to create a deeper stitch.
Turn the control button to the right (-) to create less stitch depth.
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