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52
27. Adjustment of zigzag stitch penetration in needle plate slot on Pfaff 1540
Requirement:
The widest zigzag stitches must have the same distance to the left and right edges of the needle plate
slot (fig. 54).
Check:
z Remove the presser foot.
z Insert a new needle.
z Set zigzag stitch adjustment dial to "5".
z Set needle position adjustment dial to "center".
z Press zigzag stitch button.
z Turn the handwheel and check the left and the right clearance in the slot.
Adjustment:
z Loosen screw 84 (fig.38) and move stop 85 to the left.
z Loosen screw 73 (fig. 55).
z Rotate setting eccentric 74 until the two clearances are equal.
z Tighten screw 73.
Cross-check:
z Turn the handwheel and check the clearances.