Pfaff 1540 User Manual
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44
21. Replacing the utility-stitch unit on Pfaff 1540
Removal:
z
Loosen screw 5 (fig. 42).
z
Remove circlip 14.
z
Remove bolt 11.
z
Remove circlip 92.
z
Disconnect pull rod 93.
z
Detach feed regulator cranks together with connecting rod 10 to the left.
z
Loosen the three screws 94, 95 and 96.
z
Remove the complete utility-stitch unit downwards.
Note:
Before fitting the automatic unit, make sure that the two dot marks on the toothed segments are exactly
opposite each other (fig. 43).
Fitting:
z
Install the utility stitch unit in the machine.
z
Insert the two long screws 95 and 96 at the bottom and the shorter screw 94 at the top. Tighten them
lightly (fig. 41).
z
Place the feed regulator cranks onto the bolt of actuating crank 10 .
z
Insert bolt 11.
z
Refit circlip 14.
z
Move bolt 11 to the right, until the feed regulator cranks have no sideways play and move easily.
z
Tighten screw 5.
z
Re-attach pull rod 93.
z
Refit circlip 92.