Beisler 1220-4 - Manual (Page 58)

Operating manual Automatic single head serging unit 1220/4
Page 6-34 © Beisler GmbH, Hösbach
6.5.10 Upper knife
Pict. 35 Upper knife
In the lowest position of the knife, the front edge of the blade should
stand 0.5 to 1 mm below the upper edge of the stitch plate.
1. Bring the needle in its change point and swing out the
sewing foot.
2. Turn screw (1) out and take out the knife attachment (2)
completely with the knife.
3. Loosen screw (3) and take out the knife.
4. Insert a keen knife into the attachment (2) and fix screw (3)
a little.
5. Screw in knife attachment (2) with screw (1) a little.
6. Bring the knife in its lowest position.
7. Push the knife in a way, that it has a little contact to the
bottom knife and the front edge of the blade stands 0.5 to 1
mm below the upper edge of the stitch plate.