typical GT1790A - Needle Thread Tension Adjustment

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6. Change needle thread tension
Needle thread tension can be changed while performing trial sewing since the data related to the needle thread
tension can be set by the sewing mode as well.
1) Call thread tension setting data at parallel section
Press “Thread Tension” key and the sewing
data edit screen A is displayed.
2) Change thread tension at parallel section
Press Data Change key❼ to increase or
decrease set value B, then the thread tension can be
changed.
The relation between the sewing effect and the set
value is as shown in the illustration below. Set the
value referring to the illustration.
3) Call thread tension setting data at bar-tacking
section
Press “Thread Tension” key again and the
sewing data edit screen C is displayed.
4) Change the needle thread at bar-tacking section
Press Data Change key
❼
to increase or
decrease set value D, then the thread tension can be
changed.
The relation between the sewing effect and the set
value is as shown in the illustration below. Set the
value referring to the illustration.
※ For the tension other than that at parallel section
and bar-tacking section, refer to “V-11.
Changing sewing data” p.31 and “V-21. Method
of changing memory switch data” p. 51.
Set value of tension at 1 parallel section and 2 bar-tacking section
Set value on panel
For the eyelet radial shape,
set the bar-tacking tension
first to approximately 120
and make the balance of
stitches.
Initial value
Purl
stitch
①Tension at
parallel section
Crest is lowered
1.20
Crest is raised
②Bar-tacking
tension
Thread tension is
decreased
35
Thread tension
is increased
Whip
stitch
③
Tension at
parallel section
Thread tension is
decreased
60
Thread tension
is increased
④
Bar-tacking
tension
Thread tension is
decreased
60
Thread tension
is increased
Whip stitch and purl stitch