– 19 –
4-8. Adjusting the thread take-up spring
5. OPERATION OF THE SEWING MACHINE
5-1. Sewing
Decrease
Increase
3
2
3P pedal
[In case of 3P pedal]
1) Set a workpiece on the sewing
machine.
2) When pedal switch
A
is
depressed, the right-hand
presser comes down, and
when it is depressed again, the
presser goes up. When pedal
switch
B
is depressed, the left-
hand presser comes down, and
when it is depressed again, the
presser goes up.
1
4
1) Adjusting the stroke
Loosen setscrew
2
, and turn thread tension asm.
3
.
Turning it clockwise will increase the moving
amount and the thread drawing amount will
increase.
2) Adjusting the pressure
To change the pressure of the thread take-
up spring
1
, insert a thin screwdriver into the
slot of thread tension post
4
while screw
2
is tightened, and turn it. Turning it clockwise
will increase the pressure of the thread take-
up spring. Turning it counterclockwise will
decrease the pressure.
[In case of 2P pedal]
1) Set a workpiece on the sewing machine.
2) Depress the pedal switch
A
, and the feeding
frame will come down. Depress it again, and
the feeding frame will go up.
3) Depress the pedal switch
B
after the feeding
frame has come down and the sewing machine
will start sewing.
4) After the sewing machine completes sewing,
the needle point will return to the start point
and the feeding frame will go up.
A
B
C
A
B
e
2P pedal
3) Depress the pedal switch
C
after the feeding frame has come down and the sewing machine will
start sewing.
4) After the sewing machine completes sewing, the needle point will return to the start point and the
feeding frame will go up.
When using the area 1510 with the standard method, the use of 3P pedal is the same
as that of 2P pedal. Refer to [In case of 2P pedal].
When using the pedal as 3P pedal by remodeling the presser or the like, it is
necessary to change the connecting procedure of the pedal and memory switches
U81 and U82.
