18 PFAFF
20 Neutral position of bottom feed dog
Requirement: At stitch length “0” the bottom feed dog must not make any feeding
movement.
.1 Set stitch length at “O” (lever 1, Fig. 1)
.2 Set mark of eccentric bush 2 at 45° position (screw 3).
.3 Adjust feed regulator crank 4 (Fig. 3, screw 5).
21 Stitch length limitation
.1 Loosen and take out screw 6 (Fig. 4), accessible through fitting hole, and insert screw at
different setting.
.2 Set maximum stitch length of 3 mm (lever 1)
.3 Place limitation stop 7 from top onto adjusting lever 1 and tighten it (screw 6).
22 Bottom feed actuating lever
Requirement: When the longest stitch length is set, reverse-feed lever 8 (Fig. 5) must have
a slight play (0.3 to 0.5 mm) when operated.
.1 Set longest stitch length (3 mm).
.2 Press reverse-feed lever 8 onto stop 9.
.3 Press actuating lever 10 lightly against reverse-feed lever 8 (screw 11).
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