Pfaff 1540 User Manual
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3. Adjustment of feed dog in sideways direction on Pfaff 1530-1540
Requirement:
The left and right clearance of the feed dog in the feed slot must be the same (fig. 3).
Check:
Carry out a visual check of the feed dog position.
Adjustment:
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Lay the machine on its back.
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Loosen screw 12 (fig. 4).
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Remove bolt 13 to the right.
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Loosen screw 5.
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Remove circlip 14.
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Remove bolt 11.
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Loosen both screws 3 and 4.
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Re-position feed-dog driving shaft 7 with the two cylindrical pins 8 and 9 sideways until the feed dog is
centered in the feed slot.
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Firmly tighten the two screws 3 and 4.
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Detach spring 6.
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Remove the needle plate.
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Pull the feed dog forward with one finger and release.
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The complete feed-dog driving shaft 7 must slide lightly back.
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Loosen screw 15 (fig. 5).
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Move the top feed lever forwards and backwards.
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The top feed should move freely without any difficulty (if necessary, remove cause of binding).
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Fit bolt 13 with the washer located to the left of pull-rod 18, and ensure that it is free from play (fig. 4).
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Move the complete top feed lever forwards and backwards.
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Make sure that both top and bottom feed move smoothly and without any difficulty.
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Tighten screw 12 and check once again for ease of operation.
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Move crank pin 16 with pull-rod 17 to the side in such a way that both top and bottom feed can move
easily.
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Tighten screw 15 and check once again for ease of operation.
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Fit bolt 11.
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Insert circlip 14.
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Push bolt 11 against connecting bar 10.
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Tighten screw 5.
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Re-attach spring 6.
Cross-check:
The feed dog must be exactly in the center of the feed slot.
Both top and bottom feed must not bind nor have any play.