Short thread cutter
Service Instructions 867-M PREMIUM - 03.0 - 05/2017 81
Disturbance
Disturbances caused by an incorrect setting:
• Increased knife wear when the pressure is too great
• Problems in cutting the thread
Setting the cutting pressure
The shape of the thread-pulling knife automatically creates the required
cutting pressure as soon as both cutting edges are on top of one another.
To set the cutting pressure:
1. Open the throat plate slide ( p. 20)
2. Disassemble the throat plate ( p. 21).
3. Disassemble the feed dog ( p. 22).
Fig. 68: Setting the counter blade (2).
4. Swing out the thread-pulling knife (3) until the marking (2) is next to
the cutting edge of the counter blade (1).
5. Loosen the screw (4).
6. Place the counter blade (1) in position against the thread-pulling
knife (3).
7. Tighten the screw (4).
(1) - Counter blade
(2) - Marking
(3) - Thread-pulling knife
(4) - Screw
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