In this position, the front edge of the upper knife must
be 0.5 to 1.0 mm below the cutting edge of the lower
fi xed knife.
When you have adjusted the upper knife precisely,
you can tighten retaining screw A fully.
Loosen the screw to the upper knife.
Insertion:
Insert the new upper knife and tighten
screw A very slightly. Turn the hand wheel until the
upper knife is in its lowest position.
Removal:
Set the seam width adjustment knob to
3.5mm and secure the upper knife in place.
Loosen screw A with the spanner from the accessory
box and remove the upper knife.
Turn off at the power switch
35
Replacing the upper knife
A
0.5-1.0 mm