Operation Manual

Operation
38 Operating manual 969 - 00.0 - 08/2014
Adjusting the needle thread tension on Eco machines
On Eco machines, a second tension can be activated while
sewing. Thread tension is always the total tension of all three
tensioners.
Fig. 19: Adjusting the 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) - Additional tensioner
(2) - Primary tensioner
(3) - Preliminary tensioner
①
②
③
ATTENTION
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.