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Machine head
4.8 Thread cutter
4.8.1 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 blade holder (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 blade holder (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).
Fig. 37: Setting the height of the thread-pulling knife
(1) - Counter blade
(2) - Thread-pulling knife
(3) - Hook bearing
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 the
4. Non-required washers on the top side between the thread-pulling
5. Screw down the thread-pulling knife (2) using screw (6).
Service Instructions 911-211 - 00.0 - 02/2015
WARNING
Risk of injury!
Risk of crushing injuries and stab wounds from
sharp and moving parts.
Switch the machine off before you check and set
the height of the thread-pulling knife.
blade holder (4) that the upper edges of the counter blade (1) and thread-
pulling knife (2) are at the same height.
knife (2) and screw (6) should be kept.
(4) - Blade holder
(5) - Distance
(6) - Screw
43
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