Stitch Regulator Settings; Limitation Of Maximum Stitch Length - DURKOPP ADLER 767 Service Instructions Manual

5. Stitch regulator
5.1

Limitation of maximum stitch length

20
1
5
Caution: Danger of injury !
Switch off main switch.
Check and adjust limitation of maximum stitch length only
when sewing machine is switched off.
Standard checking
Depending on the sewing equipment being used, the stitch length
setting must be limited to 6 mm or 9 mm.
–
Set maximum stitch length.
Turn button 4 in clockwise direction as far as it will go.
–
Sew test seam on thin cardboard and measure stitch length.
The measured stitch length must not exceed the maximum stitch
length allowed to realize with the used sewing equipment.
Correction
–
Screw off arm cover.
–
Loosen clamping screw 2.
–
Shift clamping block 5 on threaded spindle 1.
–
Tighten clamping screw 2.
After a longer operation of the sewing machine an axial clearance can
occur in the threaded spindle 1 so that the maximum stitch length can
no longer be set. In this case the position of clamping block 6 has to be
readjusted.
–
Loosen clamping screw 3.
–
Shift clamping block 6 on threaded spindle 1.
–
Tighten clamping screw 3.
2 3
6
4