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(
3.
ADJUSTMENT OF THE SAWING MACHINE
(
3-1.
Thread tension adjustment
(
3-2.
Adjustment of the thread pull-off lever)
WARNING:
To protect against po ssible personal Injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
a 1 □ ®
1n
□
G
-�
To adjust the thread p ull-off lever
(left ) ,
and ad j ust the position of ni p per bar block ( rear)
loosen screw
8
thread is drawn from arrow hole A in the button after sewin g , change the position of nipper bar block (rear) 9
to the left. Move the lever to the right when the thread end comes out from arrow hole B.
(
3-3.
Adjusting the tension lever
WARNING:
To protect against possible personal Injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
"'
0
3
3
,e
r.;;:·-------,
I
i
dJ)
'
'-· _____ J
)
Tension post No. 1 O is used to adjust the thread
tension to sew on the button and a relatively low
tension will be enough. Tension post No. 2 8 is
used to adjust the thread tension applied to the root
of the button sewing stitches. This tension must be
determined aooording to the t y pe of thread, fabric
and thickness of the button and must be higher than
that of tension post No. 1
clockwise to increase or oounterclockwlse to reduce
the thread tension.
O,
Insert a screwdriver through an opening in the machine arm side cover
)
1) When the machine is in the stop-motion state,
2) Tlghten setscrew O so that there is a clearance
I
I
:(f)
I
I
.
�
'
I
I
-4-
Q.
Tum the tension nuts
er�
A
e�
B
9
to the left or the right. If
loosen screw
Q.
of 8 to 1 O mm as a standard between the end of
----------------
9
thread tension guide
and end of lever
After the adjustment, make sure that the \
thread path Is within the slot as illustrated in
Fig.
O
when the machine starts.
If the thread paths do not coincide with each I
e
other, loosen screw
guide and adjust it properly.
)
At the time of X
stitching
,©
the end of
O.
I
I
I
in the tension thread
J
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