DURKOPP ADLER M-TYPE 867 - Setting the Cutting Pressure

Thread cutter
Service Manual 867 Version 02.0 - 04/2015 69
15.3 Setting the cutting pressure
The shape of the thread-pulling knife automatically creates the required
cutting pressure as soon as the thread-pulling knife and counter-blade
make contact.
Proper setting
In the rest position, the hook thread clamp makes contact with the thread-
pulling knife without any pressure being applied. Two threads with the
greatest strength for sewing can be neatly cut simultaneously.
Faults caused by an incorrect setting
• Increased knife wear when the pressure is too great
• Problems when sewing on if the hook thread clamp is too high
• Problems in cutting the thread
Cover
• Throat plate slide ( 3.3.5 Opening and closing the throat plate slide,
page 15)
Fig. 57: Setting the cutting pressure
Setting steps
1. Turn the handwheel until the thread-pulling knife (3) can be swung out
by hand.
2. Loosen the screw (1).
WARNING
Risk of injury
Risk of crushing injuries and stab wounds from mov-
ing and sharp parts.
Switch the sewing machine off before you check
and set the counter-blade and the hook thread
clamp.
1
3
2
5
6
4
(1) - Screw
(2) - Counter-blade
(3) - Thread-pulling knife
(4) - Screw
(5) - Hook thread clamp
(6) - Screw