Adjusting Aids - Duerkopp Adler 281 Service Instructions Manual

1.2 Adjusting aids

1
4
Pos. Symb.
The sewing machine can be locked in six different setting positions
with the locking pin 1 and the arresting notches 2 on the arm shaft
crank 3.
The crank has six notches which are marked on the handwheel by the
figures 1, 2, 3, 4, 5 and 6. In conjunction with marking 4 the figures
indicate the position of the notches in which the machine can be locked
with locking pin 1.
The figures simplify the finding of the arresting notches. A precise
setting can only be ensured by arresting the machine at the provided
notches.
The following items should be adjusted in the various positions:
Description
Loop stroke
Distance between the hook point and needle
Feed dog standstill when stitch-length regulator moves
feed dog height
nd
2 needle position (thread lever upper dead centre)
Reference position machine head / Control cam for thread trimmer
st
1 Needle position
Needle in lowest position
2
3
GB
5