13
14
A
B
C
D
E
G
H
2
1
F

-5-

long groove
long groove leftward
clearance
(a)
(d)
(b)
(c)
A
4.1 Coordination between needle, thread and sewing
material
Please use needle DP 17,Nm125-180.The coarseness
of needle should be in accordance with the nature of
material. If stitch on heavy duty material with a slim
needle, the needle will be easily bent, skip or thread
breakage occurs, on the contrary, stitch on tightly woven
material with a very coarse needle, the material will
be destroyed with over-big needle. So the needle and
thread should be properly selected.
4.2 Needle installation(Fig.13)
Turn the balance wheel to lift needle bar to the
highest position, loosen Needle Set Screw A , fully
insert the needle shank upto the bottom of needle
socket, keeping the long grooves of the two needles
opposite with each other, then tighten Screw A , For
single needle, keep the long groove of needle facing
the left of the operator. See Fig (b).
Note: Fig.(c) : insufficient insertion.
Fig.(d) : wrong direction of needle long groove
in insertion.
4.3 Winding the Bobbin thread
4.3.1 Winding method(Fig.14)
1) Install bobbin A to bobbin winder spindle B .
2) Pass thread C from spool through the eye 1 on
tension bracket E . Pass ti between tension discs 2 ,
and then wind the end of the thread a few turns on
the bobbin.
3) Push stop latch thumb lever D down to lock the
bobbin, the winder pulley F is thereby pressed on
belt G .
4) Start the machine to wind thread.
Note when thread is wound without sewing opera-
tion, be sure to keep the presser foot lifted.
5) When the thread is fully wound, the bobbin winder
stop latch automatically release the bobbin winder,
thus stopping the winding motion.
()
() ()
()
()
()
()
()

4. Operation

single needle