20 PFAFF
23 Bottom feed dog stroke
Requirement: When the longest stitch length is set and the needle bar is set 0.6 mm past
top dead centre (adjustment hole “1”, Fig. 1) the bottom feed dog must not
make any driving motion when the reverse-feed lever is pressed.
Adjust eccentric 2 (screws 3).
24 Bottom feed lifting motion
Requirement: When the stitch length is set at “0” and the needle bar is set 0.6 mm past
top dead centre (adjustment hole “1”, Fig. 1) the bottom feed dog must be
at the top of its stroke (the cutout in eccentric 4, Fig. 3, is facing vertically
downwards).
Adjust eccentric 4 (screws 5).
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