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4.8.2 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
• Swiveling up the machine head ( 3.3.1 Access to the machine bot-
• Bobbin flap ( 3.3.7 Opening and closing the bobbin flap, p. 13)
Fig. 38: Aligning the thread-pulling knife sideways - Part 1
Setting steps
1. Loosen all 4 setscrews (2) on the clamping ring (3).
2. Push the clamping ring (3) towards the hook bearing as far as it will go.
3. Tighten all 4 setscrews (2) on the clamping ring (3).
4. Loosen the setscrews (5).
5. Press the actuating lever (8) against the solenoid (9).
44
WARNING
Risk of injury!
Risk of crushing injuries and stab wounds from
sharp and moving parts.
Switch off the machine before aligning the thread-
pulling knife sideways.
tom section, p. 10)
①
②
③
④
(1) - Roller
(2) - Setscrews
(3) - Clamping ring
(4) - Control cam
Screw the 4 setscrews (2) tightly in place on the clamping ring (3)
before you loosen the setscrews (5). The clamping ring (3) and control
cam (4) are both mutually used as a stop and should not be undone at
the same time.
⑨
⑧
⑦
⑥
⑤
(5) - Setscrews
(6) - Highest point
(7) - Clamping screw
(8) - Actuating lever
(9) - Solenoid
Service Instructions 911-211 - 00.0 - 02/2015
Machine head
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