Pfaff coverlock 4872

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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:
● Set the stitch length adjustment knob to “0.5”.
● Set the regulator wheel for the differential feed to “1”.
● Place the adjustment gauge on to the needle plate.
● Turn the handwheel in the normal direction until the feed dog is at its highest operating position.
● Carry out a visual check.
Setting:
● Remove the needles and the presser foot holder completely.
● Loosen the fastening screw 6.
● Turn the adjustment eccentric 7 until the feed dog teeth rest against the adjustment gauge.
● Repeat this procedure until the setting is correct.
● Tighten the fastening screw 6.
Test:
● Carry out a visual check.