Description Of The Integral Adjustment Disc - Duerkopp Adler 550-16-23 Service Instructions Manual

1.2 Description of the integral adjusting disc
2 1
The machine can be locked in all adjustment positions using locking
pin 2 and the adjustment disc 3 integral to the synchronous-belt pulley
on the arm shaft.
There are 6 notches on the adjustment disc. These are marked
A, B, C, D, E and F on the hand-wheel 1.
Notch A (loop-stroke position) is deeper than the others.
The adjustment positions are as follows:
A: adjustment disc with respect to the groove in the arm-shaft
crank, loop stroke, gap between the shuttle tip and needle
C:
control cam for thread cutter
B, D, E, F: vacant
2 3
3
5