Thread cutter
66 Service Manual 867 Version 02.0 - 04/2015
15 Thread cutter
15.1 Setting the height of the thread-pulling knife
The height of the thread-pulling knife is factory-set such that the
distance (5) between the upper edge of the knife carrier (4) and the hook
bearing screw-on surface (3) is 10.7+
0.05 mm. Fine adjustment is made
by means of washers between the knife carrier (4) and the thread-pulling
knife (2).
When changing the knives, make sure that you do not lose the washers.
Proper setting
The thread-pulling knife (2) pivots as close as possible above the hook
and is at the same height as the counter-blade (1).
Cover
• Throat plate slide ( 3.3.5 Opening and closing the throat plate slide,
page 15)
Fig. 54: Setting the height of the thread-pulling knife
Setting steps
1. Loosen the screw (6).
2. Remove the thread-pulling knife (2).
3. Place as many washers between the thread-pulling knife (2) and knife
carrier (4) that the upper edges of the counter-blade (1) and thread-
pulling knife (2) are at the same height.
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 height of the thread-pulling knife.
6
4
1
2
3
5
(1) - Counter-blade
(2) - Thread-pulling knife
(3) - Hook bearing mounting surface
(4) - Thread-pulling knife
(5) - Distance
(6) - Screw
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