− 59 −
Needle thread tenson can be changed whle performng tral sewng snce the data related to the needle
thread tenson can be set by the sewng mode as well.
F o r t h e e y e l e t r a -
dal shape, set the bar-
tackng tenson frst to
approxmately 120 and
make the balance of
sttches.
Set value of tension at
1
parallel section and
2
bar-tacking section
2-3. Changing needle thread tension
1
Call thread tension at parallel section setting
data.
Press THREAD TENSION AT PARALLEL SEC-
TION key
!3
, and sewng data edt screen
A
s dsplayed.
2
Change thread tension at parallel section.
Press DATA CHANGE key
!1
, and set
value
B
goes up or comes down and the thread
tenson can be changed. The relaton between
the finish of sewing and the set value is as
shown n the llustraton below. Set the value
referrng to the llustraton.
3
Call thread tension at bar-tacking section
setting data.
Press THREAD TENSION OF BAR-TACKING
SECTION key
!4
, and sewng data edt
screen
C
s dsplayed.
4
Changing the needle thread tension at bar-
tacking section
Press DATA CHANGE key
!1
, and set
value
D
goes up or comes down and the thread
tenson can be changed. The relaton between
the finish of sewing and the set value is as
shown n table below. Set the value referrng to
the table.
!1
!3
!4
A
C
B
D
Set value on panel
Intal value
Purl
sttch
1
Tenson at paral-
lel secton
Crest s low-
ered.
120
Crest s rased.
2
Bar-tackng ten-
son
Thread tenson
s decreased.
35
Thread tenson
s ncreased.
Whp
sttch
3
Tenson at paral-
lel secton
Thread tenson
s decreased.
60
Thread tenson
s ncreased.
4
Bar-tackng ten-
son
Thread tenson
s decreased.
60
Thread tenson
s ncreased.
* For the tenson other than that at parallel secton and bar-tackng secton, refer to
-2-15. Method of changing memory switch data" p.77
Purl stitch and Whip stitch
Purl stitch
When applyng hgher tenson to the needle thread to permt t to pass straght
through fabrc, the purl sttch s formed by the bobbn thread whch s pulled
over from both sdes to the center lne.
Whip stitch
The whp sttch s formed n zgzag showng the needle thread only on top of
fabrc, and the bobbn thread on the bottom.
Whip stitch
Purl stitch
Whip stitch