Strobel 141-23 - Thread tension; Setting the stitch length

STROBEL
4.4 Thread tension (fig. 1)
Depending an quality, nature and thickness of the thread, thread tension is
set by means of tension nut 279.0624. A thick and strong thread requires
tight tension.
When lifting the cup support arm the thread tension discs are separated by
means
of lifting disc 246.0143, so that the thread is pulled easily and the
material can be withdrawn. Angle 116.0235 has to be set in a way that the
full effect of the thread tension discs is maintained, even when sewing
thicker material.
4.5 Setting the stitch length (fig. 7)
ATTENTION!
Switch off machine electrically and make sure that it is
really in standstill position by healing the tradle for the
motor control before setting the stitch length. Otherwise
danger off finger bruises and needle thoughstitches.
As shown in fig. 7, the stitch length can be adjusted by means of stitch
adjusting knob 344.0089 in the inside of the left handwheel, which is
equipped
with pointer 124.0080 showing through the "S" slot in the
handwheel.
The handwheel has a scale according to which pointer 1 24.0080 has to be
set.
The figures
of this scale do not represent a certain stitch length in mm, but
serve as reference figures only. However, low figures mean smaller stitch
length and viceversa.
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From the library of: Superior Sewing Machine & Supply LLC