Setting The Lower Overedge Looper; Setting The Height Of The Lower Overedge Looper - Pfaff Coverlock 4872 Service Manual

Setting the lower overedge looper

10. Setting the height of the lower overedge looper

Requirement:
The vertical clearance between the looper point and the looper drive shaft must be 65 mm (fig. 19).
Note:
The looper drive shaft must not have any axial play.
Check:
G Remove the housing as described in the adjustment and repair instructions.
G Turn the handwheel in the normal direction until the looper point is at its right point of reversal.
G Mount the adjustment gauge.
G Check the height of the lower overedge looper (measurement E).
Setting:
G Turn the handwheel in the normal direction until the looper point is at its right point of reversal.
G Loosen the screw 1 on the overedge looper.
G Mount the adjustment gauge.
G Move the looper until it has a vertical clearance of 65 mm to the looper drive shaft.
G Remove the adjustment gauge.
G Tighten the screw 1 of the overedge looper.
Test:
G As described under "Requirement".
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