Thread cutter
76 Service Instructions 1767 - 00.0 - 12/2016
To set the height of the thread-pulling knife:
1. Loosen the screw (6).
2. Remove the thread-pulling knife (2).
3. Place as many washers between thread-pulling knife (2) and knife
carrier (4) as necessary to ensure that the upper edges of counter
blade (1) and thread-pulling knife (2) are at the same height.
4. Non-required washers on the top side between the thread-pulling
knife (2) and screw (6) should be kept.
5. Tighten the thread-pulling knife (2) using the screw (6).
16.2 Setting the cutoff curve
Proper setting
The control cam (4) makes direct contact with the clamping ring (1).
The distance between the widest extent (6) of the control cam (4) and the
roller (3) is 0.1 mm at most.
In resting position, the circle mark on the cutting edge of the thread-pulling
knife is exactly next to the tip of the counter blade.
Cover
• Tilt the machine head ( p. 14)
• Open the throat plate slide ( p. 21)
Fig. 61: Setting the cutoff curve (1)
To set the cutoff curve:
1. Loosen all 4 threaded pins (2) on the clamping ring (1).
2. Slide the clamping ring (1) to the left as far as it will go.
3. Tighten all 4 threaded pins (2) on the clamping ring (1).
(1) - Clamping ring
(2) - Threaded pins
(3) - Roller
(4) - Control cam
(5) - Threaded pins
(6) - Widest extent
(7) - Actuating lever
(8) - Clamping screw
(9) - Solenoid
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