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Proper setting
In resting position, the hook thread clamp makes contact with the thread-
pulling knife without any pressure being applied. Any 2 threads with the
greatest strength used 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
• Bobbin flap ( 3.3.7 Opening and closing the bobbin flap, p. 13)
Fig. 40: Setting the cutting pressure
(1) - Screw
(2) - Counter blade
(3) - Thread-pulling knife
Setting steps
1. Press and turn the hand crank until the thread-pulling knife (3) can be
2. Loosen the screw (1).
3. Position the thread-pulling knife (3) such that the arrow mark is exactly
4. Turn the hook thread clamp (5) such that it rests against the thread-
5. Turn the counter blade (2) such that it rests against the thread-pulling
6. Tighten the screw (1).
7. Check the position of the cutters, since the counter blade can easily
46
swung out by hand.
next to the tip of the counter blade (2).
pulling knife (3).
knife (3).
become warped when the screw is being tightened.
(4) - Screw
(5) - Hook thread clamp
(6) - Screw
Service Instructions 911-211 - 00.0 - 02/2015
Machine head
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