Pfaff 1520 Manual

A SERVICE OF

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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.