Pfaff Sewing Machine - Manual (Page 10)

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Stitch density - Stitch density +
23
Sewing mode
Stitch density (14)
The stitch density control adjusts the density (the
closeness of the satin stitches that make up the
entire stitch). The density does not affect the actual
length of the entire stitch.
Touch + to decrease the density. Touch - to increase
the density.
Note: This is often used with specialty threads and when
a less dense satin stitch is desired.
Thread tension (15)
Touch + to increase, and - to decrease the needle
thread tension.
For the best stitch appearance and durability make
sure the needle thread tension is correctly adjusted,
i.e. for general sewing, the threads evenly meet
between the two fabric layers.
If the bobbin thread is visible on the top side of
the fabric, the needle thread tension is too tight.
Reduce the needle thread tension.
If top thread is visible on the underside of the
fabric, the needle thread tension is too loose.
Increase the needle thread tension.
For decorative stitches and buttonholes the top
thread should be visible on the underside of the
fabric.
Buttonhole slit length (23)
Set the buttonhole slit length by using + to increase
and - to decrease when sewing a buttonhole with
the Sensormatic buttonhole foot.