TEXI Tronic 7 NF operation manual
14. Thread tension
Adjusting the needle thread tension
1. As you turn thread tension nut (1) clockwise (in direction
“A”), the thread remaining on the needle after thread
trimming will be shorter.
2. As you turn nut (1) counter-clockwise (in direction “B”),
the thread length will be longer.
3. As you turn thread tension nut (2) clockwise (in direction
“C”), the needle thread tension will be increased.
4. As you turn nut (2) counter-clockwise (in direction “D”),
the needle thread tension will be decreased.
Adjusting the bobbin thread tension
1. As you turn tension adjust screw (3) clockwise (in
direction “E”), the bobbin thread tension will be increased.
2. As you turn screw (3) counterclockwise (in direction “F”),
the bobbin thread tension will be decreased.
15. Thread take-up spring
Changing the stroke of thread take-up spring
1. Loosen set screw (2).
2. As you turn tension post (3) clockwise (in direction A), the
stroke of the thread take-up spring will be increased.
3. As you turn tension post (3) counter-clockwise (in
direction B), the stroke will be decreased.
Changing the pressure of thread take-up spring (1)
1. Loosen setscrew (2), and remove thread tension (5).
2. Loosen setscrew (4). As you turn tension post (3)
clockwise (in direction A), the pressure will be increased.
3. As you turn tension post (3) counterclockwise (in
direction B), the pressure will be decreased.
Usually, all the take-up spring has been adjusted well on factory setting, only when sew special material thread, it need to be
adjusted again.
To judge the work of the thread take-up spring, confirm whether or not the thread take-up spring works up to the last before
the needle thread is pulled out from (A) when pulling out needle thread in the direction of (B) after the pressure of the thread
take-up spring has been performed. When it does not work up to the last, decrease the pressure of the thread take-up spring.
In addition, the stroke of the thread take-up spring is excessively small, the spring does not work properly. For the general
fabrics, a stroke of 10 to 13 mm is proper.
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