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Bi32-01
32 Edge trimmer
32.1 Trimming motion
Requirement: The needle bar t.d.c. (adjustment hole “5”; fig. 1) = top turning point of the
knife.
.1 Switch on the edge trimmer (key , LED on; fig. 2).
.2 Bring the needle bar to its highest position (handwheel).
.3 Adjustment: Turn eccentric 1 until the upper knife is at its top turning point; screws 2 (fig. 3).
32.2 Zero point (no trimming motion)
Requirement: When turning the handwheel and with the edge trimmer switched off, the
upper knife should not move up or down.
.1 Switch off the edge trimmer (key , LED off; fig. 2).
.2 Turn the eccentric pin 3 (fig. 3) in such a way that the eyes of the levers 4 and 5 are at the same
level (screw 6).
.3 Turn lever 7 until the upper knife remains motionless when the handwheel is turned (screw 8).
32.3 Knife height
Requirement: With the upper knife at its lowest point, the front edge of the blade should be
approx. 0.5 mm underneath the top edge of the needle plate (fig. 4).
.1 Remove the presser foot.
.2 Switch on the edge trimmer (key , LED on; fig. 2).
.3 Bring the upper knife to its lowest position (handwheel).
.4 Move the upper knife 9 (fig. 5) in the knife holder in accordance with the requirement
(screws 10).
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