46 PFAFF
49 Edge trimmer system (only on 3822-1/22)
49.1 Trimming movement
Requirement: Top dead centre of needle bar (= adjustment hole “5”, Fig. 1) = top of knife
stroke.
.1 Switch on trimming mechanism (key , LED on, Fig. 2).
.2 Set needle bar at top of its stoke (balance wheel).
.3 Adjustment: turn eccentric 1 until top knife is at top of its stroke (screws 2, Fig. 3).
49.2 Neutral point (no cutting movement)
Requirement: When the trimming mechanism is disengaged and the balance wheel is
turned, there must be no up- or downward movement.
.1
Switch off trimming mechanism (key , LED off, Fig. 2).
.2 Turn eccentric pin 3 (Fig. 3) so that eyes of levers 4 and 5 are aligned with each other (screw 6).
.3 Turn lever 7 until top knife is motionless when balance wheel is turned (screw 8).
49.3 Knife height
Requirement: When the knife is in its lowest position the front of the cutting edge must be
about 0.5 mm under the top needle plate surface (Fig. 4)
.1 Remove presser foot
.2 Switch on trimmer (key , LED on, Fig. 2)
.3 Set top knife in lowest position (balance wheel).
.4 Position top knife 9 (Fig. 5) according to requirement (screws 10).
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