Pfaff coverlock 4852 Owner's Manual page 53

3-thread overedge seam
narrow and wide
Program 05 and 06
When all tensions are correctly set, the loops
of both looper threads (pink and yellow) are
directly on the edge of the fabric.
The upper looper thread (pink) appears on
the underside of the fabric.
Set the pink thread tension to a higher value
and/or the yellow thread tension to a lower
value.
The needle thread is too loose, causing
loops on the underside of the fabric.
Set the relevant needle thread tension to a
higher value.
The lower looper thread (yellow) appears on
the top side of the fabric.
Set the yellow thread tension to a higher
value and/or the pink thread tension to a
lower value.
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