Mitsubishi LT2-2250 Manual

MITSUBISHI

Industrial Sewing Machine Parts Catalog

Model AUTO CHANGER

LT2-2250-M1 ATW

LT2-2250-A1AT

LT2-2250-B1 AT

El

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INDEX

Page

IIl

*J:.

1*

$

~

Body & ifs accessories ·······... ························•····················· 2

[ZJ

*

=

iP

~

$

~

Thread tension regulator mechanism ·····················································

4

[1]

Q

~ J:. tf.flttl

Upper shaft & presser foot mechanism ········································6

J:.fdl •

i'P;t .

rn ~f>f. it.jilbfl61

Thread take-up lever & needle bar rock motion mechanism ················· 8

[]]

it

•

•

•

•

Needle bar mechanism ······································································· 10

[ID

it

-eJ

8

.fl

•

Needle bar changing mechanism .........................................................

12

(1]

a

13

110

jJl

.fl

•

Stitch regulator mechanism ·································································· 14

II]

""F

fill

~

•J

.fl

Lower shaft & feed rock shaft mechanism ············································-- 16

[ID

iJ

"'";{

f:!i

.fl

•

*

• Hook saddle mechanism ····································································· 18

[g

-eJ

•J

•

•

(!)

Knife mechanism (I) ·· ·· · ·· ·· · ·· ·· · ··· ·· · ·· ·· · ·· ·· ·· ·· ·· · ·· ·· · ·· ·· · ·· ··· ··· ·· · ··· · · ·· ·· ·---- · ·--

20

!Til

*

-eJ

•J

.fl

•

a:o

Knife mechanism a:D •• •• ••• •• ••• •• •••••• ••• •• ••••• •• •• •• ••••• ••• •• •••••••••••

••••• ••• ·•••• •• ••••

22

~

-9·:;

7-J<·:; 7 ·•

.iE • ~t:l:lHC

Touch back, compensation stitching & detector mechanism ···················24

[j]

'7

-'(

/"(

.fl

•

Wiper mechanism ··············································································· 26

[1]

~

$

•

Oil lubrication mechanism ····································•···•·•·············•·•·····•··· 28

!j]

1:1

#

•

•

Accessories ······················································································ 30

llll

IT§

t-

7 :c

t-

;;t -

/

:;; i'::f ·:;

(I)

Auto changer kit 2 steps type XC-CN kit ·············································· 32

2 I

f.i ~ -'( 7

XC-CN ::f ·:;

t-

[1]

;;t -

t-

7 :c

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Auto changer kit 8 steps type LE-CNA kit ············································ 33

8 If£ -9 -'( 7

LE-CNA ::f ·:;

t-

!ill

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:;;

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1:1

3l

Gauge parts list ····································································· 34

llll

p -171 199203

From the library of: Superior Sewing Machine & Supply LLC

OJ *f*gB?t

BODY AND IT'SACCESSORIES

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

From the library of: Superior Sewing Machine & Supply LLC

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BODY AND IT'SACCESSORIES

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Fig. $~::J-t:		$	c	~	Description	AmtReq.
No.	Part No.		llC			~
							!;(	!;(
						~	<	iii

1M9 1304 080

2M9 1201 011

3MN 10AO 476

4MN80A1 131

5MN 10AO 131

6MN 70AO 181

7M9 0904 011

8M9 1502 004

9M9 1106 004

10MN80AO 880 11 MN80AO 584

12M97002035

13M9 2512 045

14MN70AO 237

15M9 1305 080

16M9 1116 002

17MN40AO 180

18MN10A4 742

19MN50AO 426

20M9 1601 003

21M9 1301 001

22MN70AO 472

23MN70A1 181

24MN70EO 181

25M9 0920 002

26MN50A5 742

27M9 0916 011

28MN72AO 742

29M9 1106 011

30M9 0952 003

31MN80AO 339

32M9 0910 003

33MN 80AO 131

34MN80AO 740

35M9 0421 050

36MN80AO 830

37M9 1113 002

38MN80AO 455

39M9 0201 061

40M9 1109 001

41M9 1110 001

42M9 1110 004

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+13························Rubber plug +13 .....................

5 5 5

3hs(28)X11·············Screw3hs(28)X11 ···················22 2

······························Spacer····································11 1

····························· Oil guard plate ······················· 1							1	1
·......................	·......	Oil guard plate ....................			·.. ·	1	1	1
9............................../64(40)X6. 5		Thread guide·..........................				1	1	1
		Screw 9/64(40)X6. 5 .................				2	2	2
M6X8 .....................		Screw M6X8 ....	···....................			1	1	1
11 /64(40)X8 .............		Screw 11 /64(40)X8 ...................				11	11	11
..............................		Side cover ..............................				1	1	1
.............................		·Thread take-up cover··.............				1	1	1
M10X39 ..................		Thumb screw M10X39······........				1	1	1
M10 ........................		Special nut M10 .......................				1	1	1
..............................		Rear cover ..............................				1	1	1
+l3........................		Rubber plug +13 .....................				1	1	1
11 /64(40)X8 .............		Screw 11 /64(40)X8 ...................				2	2	2
..............................(;;t-( Jvtl ·;;/)		Thread guide...........................				1	1	1
		Cap ........................................				2	2	2
.. ·..·.. ·....	··.. ·..·..·.....	· Supportor ..····...	·........	··....	·....···	1	1	1
1/4(24)X9 ...............		Screw 1f4(24)X9......................				2	2	2
13/64(32) X4. 8 ..........		Screw 13/64(32) X4. 8 ................				1	1	1
(M)·.......................		Slide plate (complete)		.............		1	1	1
..............................(l.fl.)·		Thread guide...........................				1	1	1
		Thread guide (complete) ..........				1	1	1
9/64(40)X6. 5 ...........		Screw 9f64(40)X6. 5 .................				1	1	1
9............................../64(40)X6		Cover .....................................				1	1	1
		Screw 9f64(40)X6 ....................				4	4	4
..............................		Cover .....................................				1	1	1
11 /64(40)X8 .............		Screw 11 /64(40)X8 ...................				1	1	1
9/64(36) X6. 5 ...........		Screw 9/64(36) X6. 5 .................				1	1	1
9............................../64(40)X7		Cover .....................................				1	1	1
		Screw 9f64(40)X7 ....................				2	2	2
..............	·..............	· Oil guard plate ..........		··........	·.. ·	1	1	1
..............................		Felt ........................................				1	1	1
4 ............................		Washer4 ................................				2	2	2
..............................		Face plate ...............................				1	1	1
11 /64(40)X12 ............		Screw n;64(40)X12 ..................				2	2	2
.....•.....................		·.. Shaft supporter ....	••···••..		·•• ........	1	1	1
..............................		Pin .........................................				2	2	2
11 /64(40)X6 .............		Screw 11/64(40)X6 ...................				1	1	1
11 /64(40)X8 .............		Screw 11f64(40)X8 ...................				1	1	1
11 /64(40)X8 .............		Screw 11 /64(40)X8 ...................				2	2	2

3

From the library of: Superior Sewing Machine & Supply LLC

[2] J::~~1t

THREAD TENSION REGULATOR MECHANISM

901

52

53

54

55

57

58

59

60

61

62

63

64

65

66

67

68

69

.____.:~l__---------

71

72

78

79

80

I

//; I

88

87

(86)

86

85

84

83

82

81

4

From the library of: Superior Sewing Machine & Supply LLC

	[2]	l:*~~1t
		THREAD TENSION REGULATOR MECHANISM
						fEJIHIUl:
	Fig.	fii!~:::J-t:"	fl6 Arl"'	~	Description	AmtReq.
	No.	Part No.				~	!;;:	!;;:
						s	<	ro

801

MN72EO 210

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MN84EO

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MN50EO

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MN lOAD 851

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MN72AO 950

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55

M9

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MN50A6

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57

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58

MN70AD

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59

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60

MN50M

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61

MP41Al

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62

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63

MN70Al

553

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64

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65

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66

MN70AD

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67

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68

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69

M9

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70

MN69AD 181

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71

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72

MN70A2181

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73

MM11AD

556

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74

MN10A3

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77

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78

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79

MN70A3

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MN70A2

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M9

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82

MN70AD

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MN70AD 477

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85

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MN70E1 175

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MN70Al 187

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MN70EO

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MN70AD

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95

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MN lOAD 477

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1":

•···•·•• ••·•··•·•·••• •····•·•• Thread tension regulator complete···
••• ·•·•····•······•···•···· Thread tension regulator complete ··				1
••• ·•··•·······•·•········Thread tension regulator complete···
9/s4(40)X3 ·············· Screw 9/64(40)X3 ····················		2	2	2
······························Tension releasing plate·············		1	1	1
·· ··· ··· ··· ······ ··· ··· ··· ··· · Tension releasing spring···········		1	1	1
9f64(40)X4. 2 ··········· Screw 9f64(40)X4. 2 ·················		1	1	1
..............................	Lever·····································	1	1	1
9/64(40)X4. 5 ··········· Screw 9/64(40)X4. 5 ·················		1	1	1
······ ········ ···· ··· ·········	Mounting plate·························	1	1	1
5····························	E-type stopring 5······················	1	1	1
··········· ···················	Mounting plate·························	1	1	1
11 /64(40)X8 ············· Screw 11 /64(40)X8 ···················		2	2	2
······························Spring····································		1	1	1
..............................	Push button ··· ·················· ········	1	1	1
11 /64(40)··················	Nut 11 /54( 40) ·· ··· ··· ···· ··· ········ ··· ··	2	2	2
······························Thread tension stud··················		1	1	1
······························ Thread tension stud··················		1	1	1
······························Thread tension disc··················		4	4	4
······························Spring····································		2	2	2
11 /64(40)·················· Thumb nut 11 /64(40) ··················		2	2	2
..............................	Pin·········································	1	1	1
······························Pin·········································		1	1	1
········ ······················ Thread guide···························		1
9f64(40)X6 ·············· Screw 9f64(40)X6 ····················
······························Thread guide···························		1
·· ···· ·· ··· ··· ··· ···· ·· ··· ··· · Thread tension releasing disc····		2	2	2
······························Spring····································		2
······························Spring····································			2
······························Spring····································				2
··· ··· ·· ······ ···· ··· ··· ·· ··· · Thumb nut revolution stopper·····		2	2	2
1/4(40) ····················Thumb nut 1/4(40) ····················		2	2	2
·· ······ ·················· ··· · Thread tension disc··················		4	4	4
······························Pin·········································		1	1	1
······························ Thread tension stud··················		1	1	1
··· ·· ··· ··· ··· ···· ·· ··· ··· ··· · Thread tension stud··················		1	1	1
1/4(40) ····················Thumb nut 1/4(40) ····················		1	1	1
··· ··· ·· ··· ··· ···· ··· ·· ··· ··· · Take-up spring guide ····· ·· ··· ··· ··		1	1	1
9/64(40)X6 ·············· Screw 9/64(40)X6 ····················		1	1	1
······························Stopper··································		1	1	1
··· ·· ··· ··· ··· ··· ··· ··· ··· ··· · Thread tension post··················		1	1	1
lfs(44)X3. 9 ············ Screw lfs(44)X3. 9···················		2	2	2
······························Bush·······································		1	1	1
·· · ····· ······ ············ ····	Plate complete ···· ······ ······ ········	1	1	1
·· ···· ·· ···· ·· ···· ··· ·· ··· ··· · Thread take-up spring ···· ·· ··· ··· ··		1	1	1
······························Plate······································
··· ·· ··· ··· ··· ······ ··· ··· ···· Thread take-up spring ···· ·· ···· ·· ··
······························	Plate complete························
9/64(40)X2. 9 ···········	Screw 9/64(40)X2. 9 ·················
···················· ······ ···· Thread tension stud··················
9/64(40) X7 ··············	Screw 9/64(40) X7 ····················

Pin·········································

··· ··· ·· ··· ··· ···· ·· ··· ··· ··· · Tension releasing pin ·· ··· ·· ··· ··· ··

9/64( 40) X4. 5 ···· ··· ··· · Screw 9/64( 40) X4. 5 ···· ··· ·· ······ ··

······························Stopper··································

5

From the library of: Superior Sewing Machine & Supply LLC

~ J:'dl• ill33t • V~'J:Lf~t4

UPPER SHAFT & PRESSER FOOT MECHANISM

203 ---

202

201--~

905

/ --- 185

I~

(186)

193

192

190

189

191

188

(176)

187

6

From the library of: Superior Sewing Machine & Supply LLC

rn	..t..W • ~~ • V<5..t.Lf~14
	UPPER SHAFT & PRESSER FOOT MECHANISM
	S::J-F					fi.lfHilt
Fig.		fl6	~	~	Description	AmlReq.
No.	ParlNo.					~
							~	~
						~	<	iii

160

MN80EO

383

7

7

/

161

M9

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162

M9

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163

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M9

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165

M9

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MN70NJ 232

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MN10A6

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7

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168

M9

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1/4(40)X4 ··············· Screw 1/4(40)X4······················		1	1	1
1/4(40)X6 ···············	Screw 1f4(40)X6......................	1	1	1
%2(28)X13············· Screw 9f32(28)X13 ···················		1	1	1
%2(28)X14············· Screw 9f32(28)X14 ···················		1	1	1
15/64(28) X14············	Screw 15/64(28) X14 ··················	1	1	1
:ti:(ll.)····················· Arm shaft bushing left (complete)····		1	1	1
······························Felt········································		1	1	1
31Js(28) X3. 5 ··········· Screw 3!1&(28) X3. 5 ·················		3	3	3
15/64(28)X6. 7 ··········	Bolt 15/64(28)X6. 7····················	3	3	3
(~!.)························	Knee lifter lever right (complete) ····	1	1	1
(t:J) .. ······················ Knee lifter lever (right)·············		1	1	1
······························Spring····································		1	1	1
····· ··· ··· ········· ······ ····	Knee lifter connecting rod ···· ·····	1	1	1
(B)$) +5X28 ·········Pin +5X28······························		1	1	1
15/64(28)X10············ Screw 15/64(28)X10··················		2	2	2
······ ·· ······ ···· ··· ·· ··· ··· ·	Blanca weight··························	1		1
······························Balance weight························			1
······························	Spring flange···························	3	3	3
15/64(28)X8. 5 ·········· Screw 15/64(2B)X8. 5 ················		1	1	1
(...1:.)························ Pulley (upper)·························		1	1	1
15/64(28)X14. 5········· Screw 15/64(28)X14. 5···············		1	1	1
······························Cog belt·································		1	1	1
15/64(28)X10············ Screw 15/64(2B)X10··················		3	3	3
II.("F)····················· Pulley complete (lower) ···········		1	1	1
······························Arm shaft································		1	1	1
····· ····················· ····	Presser bar ··· ······ ······ ······ ··· ·····	1	1	1

1/s(44)X4 ··············· Screw 1fs(44)X4······················

······························Bushing··································

15/64(28)X10············ Screw 15/64(28)X10··················

····· ··· ··· ········· ······ ··.. Presser bar guide bracket········· (11.) .. ······················ Knee lifter lever left (complete)···

····· ··· ··· ··· ··· ········· ···· Operation plate························

·· ······ ··· ············ ··· ····	Knee	lifter rod ····· ··· ··· ······ ··· ·····
·· ··· ··· ······ ··· ········· ··· ·	Knee	lifter lever left ······· ·· ······ ··
······························	Presser bar lifting cam··············
(~!.)························	Presser bar lifter (complete)·····
11 /64(40)X6. 6 ·········· Screw 11 /64(40)X6. 6 ················			2	2	2
······························Spring····································			1	1	1
··· ········ ··· ···· ······ ·· ··· ·	Presser spring guide ··········· ·····		1	1	1
·· ······ ······ ··· ······ ·······	Presser bar bushing ··· ··· ··· ······ ··		1	1	1
······························Thumb nut·······························			1	1	1

7

From the library of: Superior Sewing Machine & Supply LLC

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THREAD TAKE-UP LEVER & NEEDLE BAR ROCK MOTION MECHANISM

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226

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241

242

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THREAD TAKE-UP LEVER & NEEDLE BAR ROCK MOTION MECHANISM

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	220	MF 10E2 148		t:	t:					t	cl> 2. 5X240··· ··· ·· ··· ··· · Oil wick ci>2.5X240··················
	221	MN70AO	587	:;R		/	~ I			till	·· ··· · ·· ···· ·· ···· ··· ·· · ·· ··· · Thread take-up guide bracket pin ·· ··
	907	MN80EO	582	:;R 1::: /		• A -'X IJ				jj -*	( *IJ.) ·····•·•·•··············Thread take-up lever & link (complete) ·•
		MN81EO	582	:;R t: ::,... ·			A -'X IJ			jj" -*	(*H)························		Thread take-up lever & link (complete)··
	222			:;R			t:			/	······························ Thread take-up lever················
				:;R			t:			/	······························ Thread take-up lever················				1	1
	223	M9 1502	002	3jZ			IJ		jj	:;	15f64(28)X12············ Screw 15/64(28)X12··················			3	3	3
	224	MN10AO	588	A	/"\."						······························ Thread take-up lever link··········			1	1	1
	225	MN 10AO	500	iz			*			/	..............................		Plug·······································	1	1	1
				t:						*	+3X80 ·········· ··· ··· ·· · Oil wick ci>3X80·······················
	226	MN 10E3 148								t				1	1	1
	227	MN70AO	387	it . 7			7	/	7 till		······························Needle bar crank pin················ 1				1	1
	228	MN55A1	956	~			:ft			~	······························		Connecting link························	1	1	1
	229	M9 0939	002	3jZ			*			:;	9/s4(40)X11·············		Screw 9/64(40)X11 ···················	1	1	1
	230	MN55AO	750	7	·:;			::.-		~	······························Bushing··································			1	1	1
	231	MN85AO	325	1il	•-					IIi]	··· ····· ··· ··· ···· ··· ··· ·· ····		Square block···························	1	1	1
	232	MN80AO 425		~			I		lb	till	··· ·· · ·· ··· ··· ··· · ··· ··· ·· · ·· · Connecting stud·······················			1	1	1
	233	MN55A1	672	it			tiE			~	(:b;:) ........................		Needle bar rocking shaft crank·····	1	1	1
	234	M9 0401	061	7-			H		1:::'	/	ci>4X23X 1/so···········		Pin cj> 4X23X 1/so······················	1	1	1
	235	M9 1503	050	fiE						~	15···························		Washer 15 ·······························	1	1	1
	236	MN40AO 669		it *tiE 111 till					;1.	:$1 JL-	..............................		Bushing··································	2	2	2
											..............................
	237	MN80AO 668		it	*3jZ		tiE		111	till			Needle bar rocking shaft···········	1	1	1
	238	M9 1603	003	11..			tiE		111	:;	1/4(24)X16·············· Screw 1/4(24)X16 ····················			1	1	1
	239	MN55A2	672	it	*					~	(;fi)························		Connecting crank·····················	1	1	1
	240	M9 2002	045	j-			·:;	*		#t"	511s(24) ···················		Nut 5/Js(24) · ····· ······· ······ ····· ·····
	241	M9 2001	015	3jZ	*		:;		~		51Js(24)X26.2·········· Hinged screw 5/Js(24)X26. 2 ·····
	242	MF 10E2 148		t:							+2. 5X78 ······· ··· ··· ·· · Oil wick ci>2.5X78····················
	243	MN25AO	671	~			:ft			~	..............................		Rocking shaft connecting rod··········

9

From the library of: Superior Sewing Machine & Supply LLC

[ID itmm14

NEEDLE BAR MECHANISM

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260	MN80AO	780	*	JJ.,		~
261	MN80A1	780		JJ.,		~
262	M9 0914	003	iL*	.!fZ	*	:;
263	MN25A1 477		A	...
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264	M93002	050	~	1*1		~
265	M9 0974	002	3jZ-			:;
266	MN80AO 154		;fi;		*	ti
267	M90944	003	iL	.!fZ		:;
268	M9 0613	011	iL	liD.		:;
269	MN25AO 426		1£		*	.I

270	MN25A1 665			it	•			~		::\'-
271	M9	0901	020	:t\:1tl/\:f\t .ll:.					;f. ;;:.:;
272	MN25AO 161			~	•~		7			~
273	MN25A2 665			it				~		::\'-
274	MN25AO 476			A						-if
27S	MN80AO 665			it	• ;f.			~		::\'-
276	MN25AO 833			it					9	)J.,
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277					f\t		;f-		)J.,
278	M9	0401	050	~			1*1			~
279	MN80A1		154	;fi;						~
280	MV 01AO 128					it
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281	M9	0802	001			;f.		*
282	M9	0806	001	.ll:.	...	;f.				:;
283	MN80AO 477			A			·y	*I~		*
284	MN25A2 S72			':J	)J.,	~		::\'- J<.
28S	MN80AO 660			it
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286	M9	S002 063		-
287	M9	8001	070	M						~
288	MN25AO 411			::J						t:l
289	MN80AO S72			•y	)J.,	~		::\'-	J{	*
290	M9	0501	045	7	'*		·y			...
291	M9	OS01	047	~			7		•y ...
292	M9S003 063			~				t::"		/
293	MN2SAO 482			A	'*					'j'
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294	MN25A1 S72			•y	)J.,	~		::\'-	J<.	*
29S	M9	0214 063		~	#			t::'
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296	M9 4004 063			~	'*I			*		:;
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······························Holder····································				1	1	1
.............................. Holder····································				1	1	1
9/64(40)X4··············		Screw 9/64(40)X4 ····················		2	2	2
······························Stopper··································				1	1	1
······························Washer···································				1	1	1
9/s4(40)X6. S ···········		Screw 9/64(40)X6.. S ·················		1	1	1
··· ·· · ·· ···· ·· ···· ·· · ··· ·· ··· · Guide plate·····························				1	1	1
9/s4(40)XS··············		Screw 9 /64(40)X5 ····················		1	1	1
3hz(56)X4. 2 ··········· Screw 3hz(S6) X4. 2 ·················				1	1	1
······························Needle bar supporter··············· 1					1	1
(ti)························		Needle bar holder (right)··········		1	1	1
9f64(40)X3. S ···········Set screw 9f64(40)X3. S ............				2	2	2
.............................. Needle bar holding stopper .. ·····				2	2	2
(~)························Needle bar holder (left) ...........				1	1	1
..............................		Spacer....................................		4	4	4
······························Needle bar holder ....................				1	1	1
.............................. Bushing for needle bar supporter · ··				2	2	2
n;64(40)X12	............	Bolt 11 /64(40)X12 .....................		1	1	1
..............................		Washer ...................................		1	1	1
..............................		.....................Needle bar guide		1	1	1
DPXS#14······· ........		Needle DPXS # 14 ····· ·· ......	· ·· ··	2	2
DPXS#18······· ........		Needle DPXS #18 ..................				2
1/s(44) X3. 9	............	Screw 1/s(44) X3. g...................		1	1	1
1/s(44)X6 ...............		Screw 1/s(44)X6 ......................		4	4	4
..............................		Stopper for needle clamp	..........	2	2	2
..............................		Spring ....................................		2	2	2
		Needle bar
				2	2	2
······························
······ ·· ··· ··........	·· · ·· ··· · Triangle pin· .. ······· ..... · .. ······· ... ·			2	2	2
3f32 .........................		Steel ball 3f3z• .. ·••••••••••••	.. ••••oo••	12	12	12
..............................		Stud .......................................		2	2	2
..............................		....................................Spring		2	2	2
5/s4(64) ...................		Nut 5/64(64) .............................		2	2	2
5/64(64) X9. S ···········		Nut 5/64(64)X9. S .....................		2	2	2
		Pin .........................................		2	2	2
······························
······························Sleeve····································				2	2	2
..............................		Spring ....................................		2	2	2
..............................		Pin .........................................		2	2	2
MS. SXS ......	··· .........	Screw MS. SXS · .............	·· ······ ··	2	2	2
..............................		Felt ........................................		1	1	1

1 1

From the library of: Superior Sewing Machine & Supply LLC