Pfaff expression 2014 Service Manual page 13

Unscrew and remove both fastening screws 5 on the free-arm cover (fig. 5).
Put the feed drop mechanism in its normal working position.
Using a small screwdriver, disengage both feed regulators 6.
Open the cable clip.
Remove connection plug 7 from the circuit board (fig. 6).
Remove the free-arm lid carefully from the housing, to the left.
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