Operating instructions
32 Operating manual 867 Version 01.0 - 12/2012
5.3.3 Needle thread threading on machines with a clean
seam start
The clean seam start parts set provides a short and cleanly sewn
needle thread at the start of the seam. After the 1st stitch the
needle thread is clamped by the thread clamp (6) and pulled back
by the thread retractor (5) so that the needle thread only pro-
trudes by a small amount. The exact settings are described in
Additional manual 0791 867708.
Figure 10: Threading scheme for machines with a clean seam start
1. Insert the thread in a wavelike manner through the 3 holes of
the thread guide (8): From above to below through the left hole,
then from below to above through the middle hole and finally
from above to below through the left hole.
2. Guide the thread clockwise around the pre-tensioner (7).
3. Insert the thread through the thread clamp (6).
4. Insert the thread through the two eyes (1) and the guide on
the thread retractor (5).
5. Guide the thread counterclockwise around the additional
tensioner (2).
6. Guide the thread clockwise around the main tensioner (4).
7. Guide the thread around the diverter pin (3) from above.
8. Proceed with step 9 ( Section 5.3.1 Needle thread threading
on 1-needle machines, Page 29) in a normal threading
scheme.
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(1) - Eyes
(2) - Additional tensioner
(3) - Diverter pin
(4) - Main tensioner
(5) - Thread retractor
(6) - Thread clamp
(7) - Preliminary tensioner
(8) - Thread guide
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