Pfaff hobbylock 4752 Instruction Manual page 36

Seam pattern
Underside
3-thread flatlock seam (progr. 03, 04)
blue green
wide
0
blue green
narrow
Underside
The upper looper thread (red) appears on
the underside of the fabric.
Set the red thread tension to a higher value.
34
Top side
red yellow
2 3
red yellow
0 2 3
Top side
Underside
The needle thread is too tight.
Set the relevant needle thread tension to a
lower value.
Underside
The lower looper thread (yellow) is too
loose.
Set the yellow thread tension to a higher
value.
Top side
Top side