Pfaff 3811-11/43, Instruction Manual

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Bi14-02H.CDR
Bi12-03.CDR
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6
17 Bottom feed settings
17.1 Zeroing the main feed dog
Requirement:
With the stitch length set at “0” (stitch length lever 1, fig. 1), the main feed
dog 6 (fig. 2) should not move laterally.
.1 Loosen limiting screw 2 (fig. 3) to such an extent as that the stitch length “0” can be set with the
stitch length adjustment lever 1 (fig. 1).
.2 Set the stitch length at “0”.
.3 Loosen the clamp screw 3 (fig. 4) just far enough so that the reversing crank can only be turned on its
shaft using a small amount of force.
.4
Note: In order to be able to see more effectively that the feed is at a standstill, insert a
screwdriver in the clamp slot of the feed crank 5 (fig. 5).
.5 While continually turning the handwheel, change the position of the reversing crank 4 (fig. 4) in such a
way that the main feed dog (fig. 2) does not move laterally i.e. the screwdriver in the clamp slot of the
feed crank 5 (fig. 5) does not move.
.6 Tighten the clamp screw 3 (fig. 4).
.7 Carry out a check (remove the screwdriver from the clamp slot).
.8 Carry out the adjustment in accordance with chapter 17.2.
17.2 Limiting the shortest stitch length to 3 mm
Tighten the limiting screw 2 (fig. 3) enough so that no stitch length shorter than 3 mm can be set with
the stitch length adjustment lever 1 (fig. 1).