Strobel GLOBAL BM 345, Руководство по эксплуатации

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4.4 Thread tension
Depending on the quality, properties and thickness of the thread as well as the
sewing material, the thread tension is set using the knurled nut
((2) figure 1)
until the desired seam shape is created (figure 8) .
4.5 Thread feeder
The thread feeder (8) shown in figure 1 prevents the thread from twisting and
the loop from falling. It also ensures that the loop is properly caught by the
gripper and needle.
The seam shape becomes homogeneous and the edge of the seam free of
tension.
The behaviour of the thread feeder 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 presser and the needle radius so that the presser 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 presser 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) figure 1) and is located on
the front side of the machine.

Turn the control button to the left (+) to create a deeper stitch insertion.

Turn the control button to the right (-) to create a more shallow stitch insertion.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com