Timing Of Opening - DURKOPP ADLER 867 Service Instructions Manual

2.7.3

Timing of opening

3
7
2 1
Caution: Danger of injury !
Turn the main switch off !
Check and set bobbin case opener only with the sewing machine
switched off.
Standard checking
After having taken up the loop, when the hook tip 2 is below the bobbin
case opener (handwheel position 350°) the sewing thread should be
able to slip through unimpededly between the bobbin case opening
finger 3 and the bobbin case 1.
–
Turn the handwheel into position 350°.
–
Check whether the bobbin case opening finger has opened wide
enough for the sewing thread to be pulled through unimpededly.
Correction
–
Remove the plug 6 from off the hook housing 4.
–
Loosen the screw 7 in the control cam 8 using the Allen key 5.
–
Twist the control cam 8.
–
Tighten the screw 7.
–
Reinsert the plug 6.
–
Adjust the setting.
8
6 5 4
GB
27