12.Coordination among the needle,
materials(Fig.8)
thread and
13.Threading the needle thread (Fig.9)
14.Winding the bobbin thread and
(Fig.10)
adjustment
4
8
9
10
The needle thread should be left-twist, holding the
thread by left hand, twist it by right hand at certain
direction (shown as Fig.10), if it changes into tight,
it's left-twist, contrary, it's right-twist. Please use
needle DD x 1 22#~27#, the needle size should
depend on the materials to be sewn. If the thin
needle is used for sewing heavy materials, the
needle will be broken easily, and will also cause skip
and thread broken. On the contrary, the materials
will be destroyed for the big needle hole, so please
select proper needle and thread according to the
materials.
.
Turn the hand wheel to lift the needle bar to its
highest position, then threading as following
sequence shown in the Fig.9
.
C
E
A
B
D
a
b
c
d
Bobbin thread should be neat and tight. If loose,
please increase the tension of tension disc A; if not
neat, please move the winder bracket C to adjust,
When adjust, first loose the screw B, then move the
barcket C rightward if the thread is wound to one
side as Fig(b) shown; or move the barcket C
leftward if the thread is wound to one side as Fig(c)
shown until the thread is wound neatly as Fig.(a)
shown, finally fix the bracket.
Note: nylon or olyester thread should be wound
under light tension in particular; otherwise bobbin D
might be broken or deformed. Please don
t overfill
the bobbin thread; otherwise the thread will loosen
down from the bobbin. The optimum capacity of
thread is filled about 80% of bobbin outside
diameter and adjusted by screw E.
’
.
.
