Setting The Feed Dog Height - Pfaff Coverlock 4872 Service Manual

3. Setting the feed dog height

Requirement:
The tips of the feed dog teeth, when they are at their highest operating position, must project 1.3 mm over
the needle plate (fig. 7).
Check:
G Set the stitch length adjustment knob to "0.5".
G Set the regulator wheel for the differential feed to "1".
G Place the adjustment gauge on to the needle plate.
G Turn the handwheel in the normal direction until the feed dog is at its highest operating position.
G Carry out a visual check.
Setting:
G Remove the needles and the presser foot holder completely.
G Loosen the fastening screw 6.
G Turn the adjustment eccentric 7 until the feed dog teeth rest against the adjustment gauge.
G Repeat this procedure until the setting is correct.
G Tighten the fastening screw 6.
Test:
G Carry out a visual check.
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