4.
ADDITIONAL
INFORMATION
AND
PRECAUTIONS
(1) Thread tension
1) Strength of tension
spring
Pan
No.
Color
Natural length Operating
Weight required
to
compress
(mm)
length
(mm)
spring to working length
11550100
Purple
19.5mm
11.5
mm
8.92±0.49N (910 ± 50
g}
11550209
Green
19.5
mm
11.5mm
6.27±0.49N (640 ± 50 g)
13137807
Red
19.5mm
11.5
mm
4.21±0.49N (430 ± 50
g)
13138508
Yellow
17.8mm
9.8mm
3.14±0.34N (320 ±
35
g)
13138805
Blue
17.3mm
9.3mm
1.4 7±0.20N ( 150
:t
20 g)
B3121804000
Gray
13.8mm
5.8mm
1.47:t0.20N (150 ± 20
g)
2) Springs used
for
each model.
e
Needle
thread
Double-chainstitch
Upper
looper Lower looper
Mo
needle·
thread
thread
thread
M0-6604S(R) series
Red
-
Yellow
Blue
MO-6P..05S
series
Yellow
-
Blue
Yellow
MO-M
12S
series
Red
Yellow
-
Yellow Blue
MO·M
14S(R) series
Red
Yellow
-
Blue
Yellow
MO-6616S(R)-6L":.~·66.6.(4~6 or
lower)
Red
Yellow
Yellow Blue
MO-6.6.16S(R)-6fa'\-506
Red
Red
Blue
Yellow
MO-6D.
16S(R)-6D.ll.-60H Green
Green Blue
Yellow
MO-6643S(R) series
Red
Red
Yellow
Blue
Yellow
M0-66455
series
-
Red
Red
-
-
MO-6903G-ON6-3D 1 Blue
-
-
Blue
MO-6904G(J)·0F6-
700
Purple
-
Yellow
Red
M0-6905G-0M6-7
60
Yellow
-
Yellow
Purple
MO-6914G(J)-CH6· 700
Red
Yellow
Yellow
Red
MO-6916G(J)·FM-700
Purple Green
Yellow
Red
(2) Upper looper
Use a proper upper looper in accordance with the needle No. When ordering, refer to the Parts List. The
numbers shown in D frame in the table below are engraved markers.
In
addition, the letters in ( )
parentheses are the kinds of the needles.
Parts Nos. with
an
asterisk• are factory·installed on the standard machine heads at the time of delivery.
Model
Nos.engraved
on
Needle
No.
upper looper
{kind)
6604S(R)
series
·11aa
[1Cl
#9
#11
#14
6D.16S(R)
series 1199
C!L]
#14 #16 #18
1217
OD
#21
6~
14S(R) series ·1211
O[J
6903G-ON6·3D1
!1201481
#16 (00x5)
6904G(J)·OF6-700
!123835!
#21
(0Ox5)
6905G-OM6-7
60
i
123837!
#24
(DCx1)
6914G(J).CH6-
700
!123836!
#18 (OOxS)
6916G(J)·F66-700
!123835!
#21
(00x5)
-68
-
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