Locking Latch For The Thread-Pulling Knife - Duerkopp Adler 550-867 Service Instructions Manual

2.11.2

Locking latch for the thread-pulling knife

7 12
36
4 10 11
ATTENTION: Danger of breakage!
The sewing machine must not be used without the thread-pulling
knife.
The back stop (anti-rollback) for the bobbin case 2 is situated on the
thread pulling knife.
Standard checking
In the thread-pulling knife's 1 resting position, between the locking
latch 10 and the locking bolt 11 should not be a distance of more than
0.1mm.
–
Turn the handwheel until the roller 7 stands in the highest point of
the control cam 4.
–
Push the roller 7 against the control cam 4.
–
In this position the locking latch 10 should be able to swing out
without hindrance and the distance between the locking latch 10
and the locking bolt 11 should not be more than max. 0.1mm.
Correction
–
Loosen the locknut 12.
–
Turn the stop screw 13 until the distance between the locking
bolt 11 and the locking latch 10 measures 0.1mm.
–
Tighten the locknut 12.
10 12 11 13