Thread Overlock - Pfaff Coverlock 3.0 Owner's Manual

4-thread overlock

When the upper looper thread lies on the underside of the
fabric
When the lower looper thread appears on the top of the
fabric
When the left needle thread tension is too loose
When the right needle thread tension is too loose
Safety stitch
When the lower looper thread tension is too loose
When the upper looper thread lies on the underside of
the fabric
When the lower looper thread appears on the top of the
fabric
When the right needle thread tension is too loose
When the chainstitch needle thread tension is too loose
Chainstitch
When the chainstitch needle thread tension is too loose
Coverstitch
When the coverstitch looper thread is too loose
When the coverstitch left needle thread tension is too loose
When the coverstitch middle needle thread tension is too
loose
When the coverstitch right needle thread tension is too
loose
When the top surface of fabric bulges between needle
threads and the seams on the underside of the fabric
becomes tight;
Move the upper looper thread tension lever (red) toward a
higher position.
Or, move lower looper thread tension ne tuning lever
(yellow) toward a lower position.
Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
Or, move the upper looper thread tension ne tuning lever
(red) toward a lower position.
Move the needle thread tension ne tuning lever (blue)
toward a higher position.
Move the right needle thread tension ne tuning lever
(green) toward a higher position.
Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
Move the upper looper thread tension ne tuning lever
(red) to a higher position.
Or, move lower looper thread tension ne tuning lever
(yellow) to a lower position.
Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
Or, move the upper looper thread tension ne tuning
(red) lever toward a lower position.
Move the needle thread tension ne tuning lever (green)
toward a higher position.
Move the chainstitch needle thread tension ne tuning
lever (blue) toward a higher position.
Or, move the chainstitch looper thread tension ne
tuning lever (purple) toward a lower position.
Move the needle thread tension ne tuning lever (blue)
toward a higher position.
Or, move the chainstitch looper thread tension ne tuning
lever (purple) toward a lower position.
Move the coverstitch looper thread tension ne tuning lever
(purple) toward a higher position.
Move the coverstitch left needle thread tension ne tuning
lever (blue) toward a higher position. Or, move coverstitch
looper thread tension ne tuning lever (purple) toward a
lower position.
Move the coverstitch middle needle thread tension ne
tuning lever (green) toward a higher position. Or, move
coverstitch looper thread tension ne tuning lever (purple)
toward a lower position.
Move the coverstitch right needle thread tension ne
tuning lever (red) toward a higher position. Or, move the
coverstitch looper thread tension ne tuning lever (purple)
toward a lower position.
Move the coverstitch looper thread tension ne tuning lever
(purple) toward a lower position.
Stitch adjustments 35