DURKOPP ADLER 768 - Adjusting the Sewing-Foot Stroke; Adjusting the Sewing-Foot Stroke Mechanically

6.11 Adjusting the sewing-foot stroke
6.11.1 Adjusting the sewing-foot stroke mechanically
The height of the sewing-foot stroke is adjusted with adjusting wheel 1 on the arm cover.
Caution - danger of injury
The sewing-foot stroke may only be adjusted with
the sewing machine switched off.
–
Turn adjusting wheel 1. min.,
A, B, C, D, E, F, max.
min. = minimum sewing-foot stroke
max. = maximum sewing-foot stroke
Automatic stitch rate limit
The sewing-foot stroke and stitch rate are mutually dependent (see table).
A potentiometer is mechanically connected to adjusting wheel 1. The control system
registers the set sewing-foot stroke via this potentiometer and limits the stitch rate.
stitch-length range adjusting cam sewing-foot max. stitch rate
[mm] [position] stroke [mm] [rpm]
min.
2400
A
1.5 2350
B
2.4 2200
0 - 8
C
3.3 2050
D
4.2 1950
E
5.1 1750
F
6.0 1650
max.
1600
8 - 12 min. - max. 1600
B
C
E
1
16