Operation Manual

Operation
Operating Manual 967 version 00.0 - 11/2013 37
Setting needle thread tension on Eco machines
On Eco machines, a second tension can be activated while sew-
ing. Thread tension is always the total tension of all three tension-
ers.
Fig. 19: Setting needle thread tension on Eco-machines
1. Set the pre-tensioner (3) so the needle thread is slightly ten-
sioned after it.
2. Set the auxiliary tensioner (1) so the tension it creates is always
much less than the tension created by the primary
tensioner (2).
(1) – Auxiliary tensioner
(2) – Primary tensioner
(3) – Pre-tensioner
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Risk of thread popping out if auxiliary tension is too high.
If the auxiliary tensioner (1) applies too much tension, the
thread can pop out of the auxiliary tensioner while sewing,
which suddenly reduces overall tension.
Make sure the auxiliary tensioner (1) is not set too high.
ATTENTION