Pfaff coverlock 4852 Owner's Manual page 60

2-needle 3-thread assembly seam
Program 10
Note: The converter (see page 32) must
be attached to sew the 2-needle 3-thread
assembly seam.
The upper needle thread (green) is too loose.
Set the green thread tension to a higher
value.
58 58
The lower needle thread (blue) is too loose.
Set the blue thread tension to a higher value.
The lower looper thread (yellow) is too tight.
Set the yellow thread tension to a lower
value.