Pfaff creative 4874 Instruction Manual page 121

Thread Tension
2-needle, 3-thread overedge seam
Stitch program 15
If all the thread tensions are set correctly,
the yellow lower looper thread loops
completely round the edge of the fabric.
Note: To sew the 2-needle ,
3-thread overedge seam attach
the converter as described on
page 2-29.
The left needle thread (blue) is too loose.
Adjust the blue needle thread tension to a
higher setting.
The lower looper thread (yellow) is too
tight.
Adjust the yellow thread tension to a
lower setting.
7-15