Setting The Differential Feed Dog - Pfaff Coverlock 4772 Service Manual

7. Setting the differential feed dog

Requirement:
With the maximum gathering setting and the stitch length at "3", the differential feed dog 11 must be
0.5 mm from the needle plate (figure 13).
Check:
G Set the stitch-length adjustment knob to "3".
G Push down the adjustment lever for the differential feed dog as far as it will go.
G Turn the handwheel in the normal direction until the main feed dog and the differential
feed dog are flush with the needle plate.
G Check the distance to the needle plate.
Setting:
G Loosen the fastening screw 12 (figure 14).
G Move the differential feed dog until it is 0.5 mm from the needle plate (figure 13).
G Tighten the fastening screw 12 (figure 14).
Test:
G As described under "Requirement".
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