-5-
12
4.2 Coordination among the needle, the thread and
the sewing material
4.3 Installing the needle(Fig.13)
Turn the balance wheel to lift the needle bar to its
highest point, loosen needle set screw1, make the
needle groove turn to the left side of an operator, fully
insert the needle shank up to the bottom of needle
socket, then tighten needle set screw 1. .
Note: Fig.13(b) insufficient insertion,
Fig.13(c) wrong direction of groove
4.4 Winding the bobbin thread
4.4.1 Winding method(Fig.14)
Install bobbin A to the top of bobbin winder
spindle B. Pass thread C from the spool through eye 1
on tension bracket E, then pass it between tension
disc 2, and wind the end of the thread a few turns on
the bobbin. Push stop latch thumb lever D down to lock
the bobbin, the winder pully F is thereby pressed on
belt G.
Start the machine to wind. When the thread is
fully wound, the bobbin winder stop latch will
automatically release the bobbin winder, thus stopping
the winding motion.( Be sure to keep the presser foot
lifted when the thread is wound without operation.
.
.
.
13
I
Need e long
groove
l
a
b
c
Clearanc e
Needle number is DP 17, 135
1 8 0 ( # 1 8 ~ # 2 4 )
Selection to the needle size should be based upon
the thread and matesials to be sewn. As to the thread,
refer to the following table, please.
The needle number should be suitable for the na-
ture of material. If use needle of too small number to
sew heavy and hard fabrics, the needle will be broken
easily and will skip whch will cause thread breakage.
On the contrary, the material will be destroyed for the
big needle hole. So the needle size and the thread should
be selected properly according to the nature of material.
× × 17 Nm 110-
.
.
14
1
2
E
D
C
B
A
G
F
To Next Page
Loading...
