– 4 –
3-2.
Adjustment of the thread pull-off lever
To adjust the thread pull-off lever
1
,
insert a screwdriver through an opening in the machine arm side cover
(left), loosen screw
2
and adjust the position of nipper bar block (rear)
3
to the left or the right. If the end of
thread is drawn from arrow hole A in the button after sewing, change the position of nipper bar block (rear)
3
to the left. Move the lever to the r
ight when the thread end comes out from arrow hole B.
3-3. Adjusting the tension lever
1) When the machine is in the stop-motion state,
loosen screw
1
.
2) Tighten setscrew
1
so that there
is a clearance
of 8 to 10 mm as a standard between the end of
thread tens
ion guide
3
and end of lever
4
.
After the adjustment, make sure that the
thread path is within the slot as illustrated in
Fig.
A
when the machine starts.
If the thread paths do not coincide with each
other, loosen screw
2
in the tension thread
guide and adjust it properly.
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.
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.
A
B
1
2
3
At the time of X
stitching
8 to 10 mm
1
2
4
3
A
3-1.
Thread tension adjustment
3. ADJUSTMENT OF THE SAWING MACHINE
1
2
Tension post No. 1
1
is used to adjust the thread
tension to sew on the button and a relatively low
tension will be enough. Tension post No. 2
2
is
used to adjust the thread tension applied to the root
of the button sewing stitches. This tension must be
determined according to the type of thread, fabric
and thickness of the button and must be higher than
that of tension post No. 1
1
. Turn the tension nuts
clockwise to increase or counterclockwise to reduce
the thread tension.
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