Mitsubishi LT2-2250 User Manual
MITSUBISHI
Industrial Sewing Machine
Model
AUTO CHANGER
LT2-2250-M1 ATW
AT
AT
lever & needle bar rock motion mechanism · · ··· · · · · · ··· · ·· ·· · ·· 8
feed
rock shaft mechanism · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·--
a:D
•• •• • •• •• • •• •• • •••••
kit
2 steps type XC-CN kit · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
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L T2-2250-A 1
L T2-2250-B1
INDEX
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Body &
Thread tension regulator mechanism
~
Upper
shaft & presser foot mechanism ··· · ······ ·· ·· · ·· ·· · ······ ····· ·· ··· · ·· ··· ···· ···· 6
Thread
Needle
Needle bar changing mechanism
•
Stitch regulator mechanism · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
•
Lower shaft &
•
Hook saddle mechanism · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
•
(!)
Knife mechanism (I) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·----· ·--
a:o
Knife mechanism
Touch back, compensation stitching & detector mechanism
Wiper mechanism · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
•
Oil lubrication mechanism · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · • · · · • · • · · · · · · · · · · · · · • · • · · · · · • · · ·
•
1:1
llll
Accessories · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·· · · · ·
(I)
Auto changer
t-
a:D
Auto changer kit 8 steps type LE-CNA kit · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
t-
3l
Gauge parts list · ··· · · · · · · ·· ·· · ·· ·· ·· · · ·· · ··· ·· · ·· ·· · ··· ·· ·· ·· · · · · ·· · ··· ·· · ···· · ···· · ·· ·· · ·· ··· ·· ·
ifs
accessories · ·· · ·· ·· ... ···· ····· ·· ·· · ·· ···· ·· ·· · ·· ·· · ·•···· · ·· ·· · ·· ·· · · ·· ·· · ··· · ··· 2
take-up
bar mechanism · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
Parts
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 4
.........................................................
•••
••
•••••
Catalog
•• •• ••
••••• • •• •• • ••••••••••
••••• • ••
·• • •• •• • •••
····················
Page
10
12
14
16
18
20
22
24
26
28
30
32
33
34
p -171 199203
OJ
*f*gB?t
BODY AND IT'S ACCESSORIES
1
(1)
2 3 4 5 6 7 8
(9)
17
(1)
(9)
34
33
32
(9)
31
30
(27)
29 28 27
26
19
42
18
2
[]]
*1*$11-
BODY
Fig.
No.
1 M9
2 M9
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 MN50AO
20
21
22
23
24
25
26
27
28 MN72AO
29
30
31
32
33
34
35
36
37
38 MN80AO
39
40
41
42
AND
$~::J-t:
Part
No.
1304
080
1201
011
10AO
10AO
70AO
0904
1502
1106
2512
1305
1116
1601
1301
0920
0916
1106
0952
0910
80AO
0421
1113
0201
1109
1110
1110
476
131
131
181
011
004
004
880
584
045
237
080
002
180
742
426
003
001
472
181
181
002
742
011
742
011
003
339
003
131
740
050
830
002
455
061
001
001
004
MN
MN80A1
MN
MN
M9
M9
M9
MN80AO
MN80AO
M97002035
M9
MN70AO
M9
M9
MN40AO
MN10A4
M9
M9
MN70AO
MN70A1
MN70EO
M9
MN50A5
M9
M9
M9
MN80AO
M9
MN
MN80AO
M9
MN80AO
M9
M9
M9
M9
M9
IT'S ACCESSORIES
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9
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.. · .. · .. · .... · · .. · .. · .. · ..... · Support or .. · · ·· ... ·
1
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13
/64(32)
(M)·
.......................
..............................
(l.fl.)· ....................... Thread guide
9
/64(40)X6. 5
..............................
9
/64(40)X6
..............................
11
/64(40)X8
9
/64(36)
..............................
9
/64(40)X7
.............. · ..............
..............................
4
............................
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11
/64(40)X12
..... •
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· ...... Oil guard plate
...........
.....................
.............
..................
.............
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.........
...............
X4. 8 ..........
...........
..............
.............
X6. 5 ...........
..............
............
· .. Shaft supporter ....
.............
.............
.............
Description
+13
Rubber plug
Screw 3hs(28)X11
Thread guide·
Screw 9/64(40)X6. 5
Screw
M6X8
Screw 11/64(40)X8
Side cover
· Thread take-up
Thumb screw
Special nut M10
Rear cover
Rubber plug
Screw 11/64(40)X8
Thread guide
Cap
........................................
Screw
1f4(24)X9
Screw 13/64(32)
Slide plate
Thread guide
Screw 9f64(40)X6. 5
Cover
.....................................
Screw 9f64(40)X6
Cover
.....................................
Screw 11/64(40)X8
Screw 9/64(36)
Cover
.....................................
Screw 9f64(40)X7
· Oil guard plate
Felt
........................................
Washer4
Face plate
Screw
n;64(40)X12
Pin
.........................................
Screw 11/64(40)X6
Screw 11f64(40)X8
Screw 11/64(40)X8
.....................
···················
....................
..........................
.... ···
....................
...................
..............................
cover··
M10X39······
.......................
..............................
+13
.....................
...................
...........................
........
......................
X4. 8 ................
(complete)
...........................
(complete)
....................
...................
X6. 5 .................
....................
..........
................................
...............................
..................
••· · ·••
...................
...................
...................
· .. ·
.................
.............
........
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.............
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5 5
2 2
1 1
1 1
1
1 1
1 1
2 2 2
1 1
11
11
1
1
1 1
1 1
1 1
1 1
1 1
2
2
1 1 1
2
2
1 1
2 2
1 1
1 1
1 1
1 1
1 1
1 1
4
4
1
1
1
1
1 1
1 1
2 2
1 1
1 1
2 2
1 1
2 2
1 1
2 2
1 1
1
1
2 2
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5
2
1
1
1
1
11
1
1
1
1
1
1
2
2
1
2
1
1
1
1
1
1
4
1
1
1
1
2
1
1
2
1
2
1
2
1
1
2
3
[2]
J::~~1t
THREAD TENSION REGULATOR MECHANISM
901
52 53 54 55
57 58
59
60
61
62
63
.____.:~l__---------71
64
65
66 67 68
69
72
I
//;
88
87
(86)
4
I
86
85
84
83
82
78
79
80
81
[2]
l:*~~1t
THREAD
Fig.
fii!~:::J-t:"
No.
801
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Part
No.
MN72EO
MN84EO
MN74EO
M9
0902
MN50EO
MN
lOAD
M9
0927
MN72AO
M9
0906
MN50A6
M9
0505
MN70AD
M9
1106
MN50M
MP41Al
M9
1105
MN70Al
MN70AD
MF
10A1
MN70AD
M9
1101
M9
7007
M9
0205
210
210
210
015
220
851
015
950
002
601
065
601
004
572
270
045
553
553
555
245
046
060
060
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9
/s4(40)X3 ·············· Screw 9/64(40)X3 ····················
;1.
······························Tension releasing plate············· 1 1 1
·· · ·· · ·· ··· · · · · ·· · ·· · ·· ·
9f64(40)X4. 2 ··········· Screw 9f64(40)X4. 2 ·················
..............................
9
/64(40)X4. 5
······ ········ ···· ··· ········· Mounting plate·························
5····························
··········· ··················· Mounting plate·························
11
/64(40)X8 ············· Screw 11/64(40)X8 ···················
······························Spring····································
..............................
11
/64(40)··················
······························Thread
"
······························ Thread tension stud··················
······························Thread
······························Spring····································
11
/64(40)·················· Thumb nut 11/64(40) ·················· 2 2 2
..............................
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······························Pin·········································
·•
·•
· ·· • ·· · ·· · Thread tension regulator complete
·•
· ·· · ··
···
··
· ·· · Tension releasing spring···········
··········· Screw 9/64(40)X4. 5 ·················
MECHANISM
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AmtReq.
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1
1
1
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1 1 1
1 1 1
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4
2
1 1 1
1
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1
4
2
1 1
Description
• Thread tension regulator complete···
· Thread tension regulator complete··· 1
Lever·····································
E-type stopring 5······················
Push button · ·· · · · · · · · · · · · · · · · ·
11
Nut
/54(
40) ·· ··· · ·· ···· ··· ········ ··· · ·
tension stud·················· 1 1 1
tension disc··················
Pin·········································
··
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ro
2
1
1
1
4
2
70
MN69AD
71
M9
72
MN70A2181
MM11AD
73
74
MN10A3
MF
MN52Al
75
MT
76
M9
77
MF
78
M97008
79
MN70A3
80
MN70A2
81
M9
82
MN70AD
83
M9
84
MN70AD
85
MN70AD
86
M9
87
MN70AD
88
MN70E1
89
MN70Al
90
MN70AD
91
MN70AD
92
MN70EO
93
M9
94
MN70AD
95
M9
96
M9
97
M9
98
M9
99
MN
181
0909
003
556
245
1100245
245
60AD
802
1610
046
lOAD
555
060
553
553
1611
046
573
0915
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477
154
0802
001
750
175
187
308
187
175
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0516
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······························Thread
l*l
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·· · · · · ·· · · · · · · · · · · · · · · · · ·· · ·· · Thread tension disc··················
······························Pin·········································
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Thread tension stud··················
··· ·· ·
··
··· · ·· ···· ·· · ·· ·
1
/4(40) ····················Thumb nut 1/4(40) ····················
··· ··· ·· ··· · ·· ···· ··· ·· ·
9
/64(40)X6
······························Stopper··································
··· ·· ·
··
··· ··· · ·· · ·· · ·· · ·· · ·· · Thread tension post··················
lfs(44)X3. 9 ············ Screw lfs(44)X3. 9··················· 2
······························Bush······································· 1
·· · · · · ·· · · · · ·· · · · · · · · · · · ·· · · · · Plate complete · · ·· · · · · ·· · · · ·
·· · ··· ·· ···· ·· · ··· ··· ·· ·
······························Plate······································
··· ·· ·
··
· ·· ··· · · · · ·· · ·· ·
······························ Plate
9
/64(40)X2. 9 ··········· Screw 9/64(40)X2. 9 ·················
· · · · · · · · · · · · · · · · · · ·· · · · · ·· · · · · Thread tension stud··················
9
/64(40) X7 ·············· Screw 9/64(40) X7 ····················
······························
··· ··· ·· ··· · ·· ···· ·· · ·· · ·· ··· · Tension releasing pin ·· ··· ·· ··· · ·· ··
9
/64(
40)
X4. 5 · · ·· · ·· ··· · Screw 9
······························Stopper··································
··
· ·· · Thread tension releasing disc····
··
··· · Thread tension stud··················
··
· ·· · Take-up spring guide · · ···
·············· Screw 9/64(40)X6 ····················
··
· ·· · Thread take-up spring ···· ·· · ·· ··· ··
··
· · · · Thread take-up spring · ··· ·· ···· ·· ··
guide··························· 1
nut 1/4(40) ····················
complete························
Pin·········································
/64(
40) X4. 5 · ··· ··· ·· · · · · ·· ··
··
· ·· ··· ··
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1
2
2
2
2
2 2 2
2
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1 1
1 1 1
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UPPER SHAFT & PRESSER FOOT MECHANISM
203---
202
201--~
905
(186)
193 192
I~
190
189
191
188
/---185
(176)
187
6
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UPPER SHAFT
Fig.
S::J-F
No.
ParlNo.
160
161
162
163
164
165
166
167
168
169
804
170
171
172
173
174
175
176
177
178
179
185
186
187
188
189
190
191
192
193
805
194
196
197
198
199
200
201
202
203
204
MN80EO
M9
M9
M91801
M9
M9
MN70NJ
MN10A6
M9
M9
MN70EO
MN70NJ
MN70NJ
MN70NJ
M9
M9
MN80NJ
MN81NJ
MN
M9
MN50AO
M9
MN
M9
MN72NJ
MN82NJ
MN85AO
M9
MF
M9
MN70AO
MN72EO
MN70NJ
MN70AO
MN72A1
MN70NJ
MN70A2
M9
MN82NJ
MF
MN85AO
M9
1602
1606
1802
1516
1219
1503
5004
1513
10A1
1516
1501
lOAD
1515
0851
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1513
1109
20AO
3214
383
001
001
002
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001
232
740
015
031
252
252
572
511
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001
271
271
851
002
767
007
523
002
768
230
262
015
267
001
265
252
510
738
252
253
252
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267
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%2(28)X13············· Screw 9f32(28)X13 ···················
%2(28)X14············· Screw 9f32(28)X14 ···················
15
/64(28) X14············ Screw 15/64(28) X14 ·················· 1 1
:ti:(ll.)····················· Arm shaft bushing
······························Felt········································
3
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15
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15
/64(28)X10············ Screw 15/64(28)X10··················
······ ·· ······ ···· ··· ·· ··· ··· · Blanca weight··························
······························Balance
······························ Spring flange···························
15
/64(28)X8. 5 ·········· Screw 15/64(2B)X8. 5 ················
(...1:.)························ Pulley
15
/64(28)X14. 5········· Screw 15/64(28)X14. 5··············· 1
······························Cog
15
/64(28)X10············ Screw 15/64(2B)X10··················
II.("F)····················· Pulley complete (lower) ··········· 1 1
······························Arm shaft································
· · · ·· · · · · · · · · · · · · · · · · · · · ·· · · · ·
1
/s(44)X4
······························Bushing··································
1
5/64(28)X10············ Screw 15/64(28)X10··················
· · · ·· · ·· · ·· · · · · · · · ·· · · · · ·· · ·.. Presser bar guide bracket·········
(11.)
..
· · · ·· · ·· · ·· · ·· · ·· · · · · · · · ·· · · · · Operation plate························
·· · · · · ·· · ·· · · · · · · · · · · ·· · ·· · · · · Knee lifter rod · · · ·· · ·· · ·· · · · · ·· · ·· · · · · ·
·· · ·· · ·· · · · · ·· · ·· · · · · · · · ·· · ·· · Knee lifter lever left · · · · ··· ·· · · · · ·· · ·
······························
(~!.)························
11
/64(40)X6. 6 ·········· Screw 11/64(40)X6. 6 ················
······························Spring····································
··· ········ ··· ···· ······ ·· ··· ·
·· · · · · ·· · · · · ·· · ·· · · · · ·· · · · · · · ·
······························Thumb nut·······························
FOOT MECHANISM
X3. 5 ··········· Screw
······················ Knee lifter lever (right)············· 1 1
+5X28
·········Pin
··············· Screw 1fs(44)X4······················
······················
*
Description
Crank (complete)···················· 1
1
Screw
/4(40)X4······················
Screw 1f4(40)X6 ......................
left
(complete)···· 1
3!1&(28)
Bolt 15/64(28)X6. 7···················· 3
Knee
lifter
+5X28······························ 1
(upper)·························
belt·································
Presser
Knee
lifter
Presser
Presser
Presser
Presser
X3. 5 ·················
lever
right (complete) ····
weight························
bar · ·· · · · · ·· · · · · ·· · · · · ·· · ·· · · · · ·
lever
left
(complete)···
bar
lifting
bar lifter
spring guide ··········· ·····
bar bushing · ·· · ·· · ·· · · · · ·· · ·
cam··············
(complete)·····
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THREAD
ROCK
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TAKE-UP
LEVER & NEEDLE BAR
MOTION MECHANISM
907
226 227 220
221
235 236
I
241
-243
242
231
232
233
234
8
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THREAD TAKE-UP LEVER & NEEDLE
ROCK MOTION MECHANISM
{l(I&,::J-1'"
Fig.
No.
220
221
907
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
ParlNo.
MF
10E2
MN70AO
MN80EO
MN81EO
M9
MN10AO
MN
MN
MN70AO
MN55A1
M9
MN55AO
MN85AO
MN80AO
MN55A1
M9
M9
MN40AO
MN80AO
M9
MN55A2 672
M9
M9
MF
MN25AO
148
587
582
582
1502
002
588
10AO
500
10E3
148
387
956
0939 002
750
325
425
672
0401
061
1503
050
669
668
1603
003
2002
045
2001
015
10E2
148
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······························
15f64(28)X12············
······························
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··········
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······························
······························
9
/s4(40)X11·············
······························
··· ····· ··· ··· ···· ··· ··· ·· ····
· · · ·· · ·· · ·· · · · · ·· · · · · · · · ·· · ·· · Connecting
(:b;:)
........................
1
ci>4X23X
15···························
..............................
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1
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51Js(24)X26.2··········
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2.
5X78
·······
..............................
··· ··· ·· ·
BAR
Description
ci>2.5X240··················
take-up
lever
take-up
Thread
take-up
Thread
take-up
Screw 15/64(28)X12··················
Thread
take-up
Plug·······································
Oil
wick
Needle
Connecting
Screw 9/64(40)X11
Bushing··································
Square
Needle bar rocking shaft crank·····
Pin
Washer
Bushing··································
Needle
Screw
Connecting
Nut
Hinged
Oil
Rocking
bar
block···························
cj>
4X23X 1 /so······················
15
bar
1
/4(24)X16
5
/Js(24) · ····· ······· ······ ·····
screw
wick
shaft connecting rod··········
& link
lever
& link
lever················
lever················
lever link··········
ci>3X80·······················
crank
pin················
link························
stud·······················
·······························
rocking
····················
crank·····················
5
/Js(24)X26. 2
ci>2.5X78····················
pin
· · · ·
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1
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NEEDLE
BAR
MECHANISM
908
908
296
295
294
293-----rn
292~0
291
290
289
287_____.
~~
286
~21
282
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279
278
276
2
275
297 274 273
1 0
272
908
271
270
269
\
268
[ID
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Fig.
No.
MN85EO
908
MN80AO
250
251
M9
252
M9
253
MN25AO
254
MF
25S
MNSSAO
MN80AO
256
258
M9
2S9
MN80AO
260
MN80AO
261
MN80A1
262
M9
263
MN25A1
264
M93002
265
M9
266
MN80AO
267
M90944
268
M9
269
MN25AO
270
MN25A1
271
M9
272
MN25AO
273
MN25A2
274
MN25AO
27S
MN80AO
276
MN25AO
277
M9
278
M9
279
MN80A1
280
MV
MN
281
M9
282
M9
283
MN80AO
284
MN25A2
28S
MN80AO
286
M9
287
M9
288
MN25AO
289
MN80AO
290
M9
291
M9
292
M9S003
293
MN2SAO
294
MN25A1
29S
M9
296
M9
297
MN
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Part.
No.
666
750
1S03
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091S
003
192
10E3
148
148
666
0603
065
454
780
780
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003
477
050
0974
002
154
003
0613
011
426
665
0901
020
161
665
476
665
833
0107
024
0401
050
154
01AO
128
10A1
128
0802
001
0806
001
477
S72
660
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063
8001
070
411
S72
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045
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047
063
482
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..............................
*
5
/s4(64)
...
...
/
'j'
/
*
:;
...
5
...................
/64(64) X9. S
······························
······························Sleeve····································
..............................
..............................
MS.
SXS ...... ···
..............................
Needle bar supporter (complete)···
··········
Screw 15/64(28) X4. S
Screw
Oil
········
S
···········
···········Set
............
............
...............
........
···········
Oil
··· ·
Needle
E-type stop ring 6·
Needle bar supporter guide pin····
Holder····································
Holder····································
Screw
Screw
Screw9/64(40)X5
Screw 3hz(S6) X4. 2
Needle
Needle
Needle
Spacer
Needle
Bushing
Bolt 11/64(40)X12
Washer
Needle
........
Needle
Needle
........
Screw 1 /s(44) X3. g
Screw 1/s(44)X6
Stopper
Spring
Needle
·· · ·· · · · · Triangle pin· ..
Steel
Stud
Spring
Nut 5/64(64)
Nut 5/64(64)X9. S
Pin
Spring
Pin
.........
Screw
Felt
Description
9
/64(40)X6
.P3X210·····················
wick
.P3XSS·······················
wick
bar
supporter···············
9
/64(40)X4
9
/64(40)X6.. S
plate·····························
bar
supporter···············
bar
screw
.........................................
.........................................
holder
9f64(40)X3. S
bar
holding
bar holder (left)
....................................
bar
holder
for
needle bar supporter · · ·
...................................
bar
guide
DPXS #
DPXS
for
needle
....................................
bar
..............................
3f3z•
ball
.......................................
....................................
.............................
....................................
MS.
SXS ·
........................................
················
····················
··········
··
····················
·················
····················
·················
(right)··········
............
stopper
...........
....................
.....................
.....................
14
· · · · · ·· ...... · ·· · · 2 2
#18
..................
...................
......................
clamp
..........
·······
..... · ..
..
·••••••••••••
.............
·······
..
.....................
·· ······ ··
········
..
·····
... · 2 2 2
••••oo••
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Amt.
Req.
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1 1 1
1
1
2
2
1
1
1
1
1 1 1
1 1 1
1 1 1
1
1 1
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1
1 1 1
1
1
2 2
1
1
1
1
1 1 1
1
1
1
1
1
1
1
1 1
1 1
2
2
2
2
1 1 1
4
4
1
1
2
2
1
1
1
1
1 1
1 1
4
4
2 2 2
2 2 2
2 2 2
12 12 12
2 2 2
2 2 2
2
2
2
2
2
2
2
2
2 2
2
2
2
2
1
1
!;c
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1
2
1
1
1
1
2
1
1
1
1
1
1
2
2
4
1
2
1
1
1
2
1
4
2
2
2
2
2
2
2
1
1 1
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