Beisler 1281-5 - Manual (Page 78)

2.6.2 Changing and adjusting the lower knife
Head EXT 3216-03/233K
Caution: Risk of injury!
Switch the main switch off.
Change and adjust the lower knife only with the sewing unit switched
off.
Standard
The blade of the lower knife has to be flush with the top edge of the
throat plate.
Correction
–
Remove the fabric sliding sheet.
– Swivel the sewing foot out.
– Loosen screw 4.
– Draw the holder of the lower knife 3 to the left as far as it will go
and tighten screw 4 slightly.
– Loosen screw 2 and remove the old knife.
– Insert a new, sharp knife in guide 1 in such a way that the blade is
flush with the top edge of the throat plate.
– Tighten screw 2.
– Turn the handwheel until the upper knife is in its highest position.
– Loosen screw 4 and let the holder of the lower knife 3 spring
against the upper knife.
– Tighten screw 4.
16
4 3 2 1