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16 Thread cutter
16.1 Setting the position of the thread-pulling knife
16.1.1 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+0.5 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.
Correct 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
Figure 57: Setting the height of the thread-pulling knife
(1) - Counter-blade
(2) - Thread-pulling knife
(3) - Hook bearing screw-on surface
Setting steps
1. Loosen the fastening screw (6).
2. Remove the thread-pulling knife (2).
3. Place as many washers between the thread-pulling knife (2) and knife
4. Non-required washers on the top side between the thread-pulling knife
70
WARNING
Risk of injury
Switch the sewing machine off before you check and set the
height of the thread-pulling knife.
(
Section 4.4.5 Opening and closing the throat plate slide, page 13)
carrier (4) that the upper edges of the counter-blade (1) and thread-
pulling knife (2) are at the same height.
(2) and fastening screw (6) should be kept.
(4) - Knife carrier
(5) - Distance
(6) - Fastening screw
Service manual H867 Version 00.0 - 08/2013
Thread cutter
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