16
4-7. Adjusting the thread take-up spring
The standard stroke of thread take-up spring
is 8
to 10 mm, and the pressure at the start is 0.1 to 0.3N.
1) Adjusting the stroke
Loosen setscrew
, and turn thread tension
asm.
.
Turning it clockwise will increase the moving
amount and the thread drawing amount will in-
crease.
2) Adjusting the pressure
To change the pressure of the thread take-up
spring, insert a thin screwdriver into the slot of
thread tension post
while screw
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.
4-8. Example of the thread tension
When using the sewing machine for the rst time, adjust the thread tension referring to the table below.
Thread
Polyester lament thread #50
Polyester spun thread #50
Polyester spun thread #60
(Thread clamp OFF)
Cotton thread #50
Cotton thread #20
Material
Wool
Wool
T/C broad
Denim
Denim
Needle thread tension
setting
30 to 35
50 to 55
30 to 35
35 to 45
35 to 45
Thread take-up spring moving
amount [Thread drawing amount]
10mm [13mm]
10mm [13mm]
8 to 10mm [11 to 13mm]
10mm [13mm]
8 to 10mm [11 to 13mm]
Strength
0.1N
0.2N
0.1N
0.1N
0.1N
5-1. Selection of language
When you turn ON the power to the sewing machine
for the first time after the purchase, the language
selection screen is displayed. Select the language to
be displayed, then press RETURN key
.
The language to be displayed on the screen can
be changed by means of the memory switch U239
"Language selection". Refer to
"I.8. HOW TO USE
THE MEMORY SWITCH" p.51
for the details of
the memory switch.
If you terminate the language selection by
pressing RETURN key
without se-
lecting the language, the language selection
screen will be displayed every time you turn
ON the power to the sewing machine.
5. OPERATION OF THE SEWING MACHINE (BASIC)
Set each item following the procedure described below.
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