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5-3. Thread clamp device
Trouble of sewing (slip-off of needle thread, stitch skipping, or stain of needle thread) at the time of high-
speed start can be prevented with the thread clamp device.
The thread clamp device will operate when the thread clamp button has been selected
not operate when the thread clamp button has not been selected
Changeover of ON/OFF motion is performed with
OFF state, the sewing machine is automatically set to the soft-start mode.
1. When memory switch
thermore, the thread clamp key
2. Memory switch, refer to
* Matters that demand special attention when using the needle thread clamp
(1) In case of with the needle thread clamp (motion), make shorter the length of needle thread remain-
ing on the needle at the sewing start for use. When the length of needle thread is lengthened,
needle thread on the wrong side of material is apt to protrude. In addition, when the length is
excessively lengthened, the end of needle thread held by the needle thread clamp may be rolled in
the seams.
1)
3)
(2) It is possible to adjust needle thread shorter by making the needle thread clamp work while holding
the stabilized sewing at the start of sewing and the gathering (bird's nest) of needle thread on the
wrong side of material can be lessened. However, for the pattern which the stitch length for neatly
rolling in needle thread is short, needle thread may protrude from the wrong side of material. Select
with/without thread clamp referring to the item below.
(Right side)
(Wrong side)
is �1� (prohibited), the thread clamp does not work. �ur-
�@-2-28. How to change the memory switch data",
33 to 36 mm
10mm
Needle thread
.
key. When the thread grasping device is in the
will not be displayed.
1)
In case of with the needle thread clamp, the
standard of the length of needle thread is 33
to 36 mm.
2)
When needle thread is long after replacing
thread or the like or sewing while holding nee-
dle thread by hand, turn OFF the THREAD
CLAMP
3)
When the needle thread held with the thread
clamp is rolled in the seams, do not draw the
material forcibly and cut the connecting needle
thread with the scissors or the like. The seams
are not damaged since it is the needle thread at
the sewing start.
When the sewing length is short (less than ap-
proximately 10 mm), the end of needle thread may
protrude like beard even when adjusting needle
thread shorter.
– 21 –
, but it will
p.86.
key.
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