Pfaff creative 4874 Instruction Manual page 122

Stitch formation
We show adjustment options that
predominantly refer to the cover-stitch,
since the top cover-stitch consists of a
combination of cover-stitch with top cover
thread.
3-needle top cover
Stitch program 23
If all the thread tensions are set correctly,
the needle threads (blue, green and red)
are barely visible on the underside of the
fabric. The looper thread (purple) lies slack
between them.
The top cover thread (blue) lies slack
between the needle threads on the top
side of the fabric.
If there are protruding loops in the top
cover thread (blue), adjust the blue thread
tension (45) of the top cover to a higher
setting.
The needle threads (blue, green and red)
are too loose and form small loops on the
underside of the fabric.
Adjust the blue, green and red thread
tensions to a higher setting.
7-16