2
4. THE ADJUSTMENT SETTING OF THE MACHINE
The machine is already adjusted all right at the assemble plant. Normally, the machine can be
used directly. At the period of use, some parts need to be adjusted according to sewing material. The
way to adjusting is described as follows.
4.1 The adjustment setting of the awls’ height (Fig.2)
At first, please install the awls correctly; then turn the handwheel in the correct direction till the
awl comes to its undermost position. At this time, the “A” point on awl is under the up surface of
needle plate 1.6-3mm. To adjust the height of awl, the procedure as follows:
(1) Loosen the fastening screw of conical fastening pin (654-1037).
(2) Move the awl bar (654-1039-D) to its correct position.
(3) Tighten the fastening screw of the part 654-1037.
Tip of awl
Awl
A Point
Needle plate
1.6mm
Fig.2
4.2 Position setting of eccentric cam of hook needle movement (Fig.3)
Turn the handwheel in the correct direction till the hook needle bar (654-1063-D) comes to its
undermost position. Mark a scale that is even with the upper surface of needle bracket (654-1061)
on the hook needle bar. Then turn the handwheel continually till the awl comes to its undermost
position. At this time, the hook needle bar rise about 1.6-3.2mm from its undermost position. If the
movement of the hook needle is not accord with the rule described above, the crank angle of
eccentric cam(654-1014) of hook needle movement need to adjusted.
This setting is very important. It is the basic setting of all adjustment setting.
1.
6-3
.2m
m
Upper surface
Scale
Hook needle
bar
Upper surface
Scale
Needle protector
bar
Fig.3