Model 450 seríes – MTD 21A-450 Series User Manual
Page 15
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Model 450 Seríes
REF.
NO.
PART NO.
DESCRIPTION
REF.
NO.
PART NO.
DESCRIPTION
1.
611-0020
Wheel Shaft Ass’y: 33T
28.
721-0378
Seal 1.0 Shaft
2.
611-0021
Tine Shaft Ass’y: 18T
29.
721-0379
Seal .75 Shaft
3.
611-0128
Jack Shaft Ass’y
31.
726-0277
Taper Cap Ring
4.
611-0129
Input Shaft Ass’y
32.
732-0496
Compression Spring .50" Lg.
5.
617-0058
Rev. Idler Gear Ass’y: 30T
33.
736-0163
Thrust Wash. 1.03" I.D. x 1.62"
6.
617-0059
Ftine Idler Gear Ass’y: 30T
34.
736-0351
FI-Wash .76"I.D.x1.5"O.D.
7.
617-0060
Tine Input Sprocket Ass’y: 9T
35.
736-0407
Bell-Wash .45" I.D. x 1.0"
8.
617-0061
Wheel Input Sprocket Ass'y; 10T 36.
736-0518
Thrust Wash. .445 x 1.92 x .060
9.
617-0062
Gear Ass’y: 11T
37.
736-3088
FI-Wash. .635" I.D. x 1.59 O.D.
10.
686-0108
R.H. Housing Ass’y
40
738-0645
Detent Shaft 1/2" Dia.
11.
710-0376
Hex Bolt 5/16-18x1" Lg.
41.
738-0648
Jack Shaft .625 x 2.385
12.
710-0599
Hex S-Tap Scr. 1/4- 20 x .5"
42.
738-1013
Jack Shaft .625 x 5.0
13.
710-0604A
Hex S-Tap Scr. 5/16-18 x .625" 43.
741-0124
Ball Bearing
14.
710-3008
Hex Bolt 5/1
6-
1
8 X.
75"
44.
741-0420
Flange Bearing 1.0 x 2.5 x 1.38
15.
711-1349
Input Shaft
45.
741-0421
Flange Bearing .75 x 2.5 x 1.38
16.
712-0378
Hex Nut 7/16-20
46.
741-0563
Ball Bearing . 6692 x 5745 x .466
17.
712-3004A
Flange Nut 5/16-18
47.
741-0862
Detent Ball .250
18.
713-0367
#420 Chain 1/2 Pitch x 50 Links 48.
750-0258
Spacer .315
19.
713-0484
#50 Chain 5/8 Pitch x 54 Links
49.
750-0570
Spacer 1.0 I.D x 2.0 O.D. x .440
20.
716-0865
Snap Ring
50.
750-0664
Spacer .505 I.D. x .88 O.D. x
21.
717-0853
Shifting Fork
51.
750-0671
Spacer .75 x 2.0 x .50
22.
717-1582
Spur Gear 44T
52.
786-0171
L.H. Chain Case Ass’y
23.
717-1583
Spur Gear 30T
53.
786-0238
Gear Positioner Bracket
24.
717-1584
Spur Gear 30T
-
737-0300
Benelene 920 Grease
25.
717-1585
Spur Gear 44T
-
737-0288
Never Seez Grease
26.
27.
717-1587
717-1594
Spur Gear 44T
Sour Gear 16T
-
686-0107
Gear Case Assembly Complete
NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever
needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Oyster Gray, the
part number to order would be 700-xxxx-0662.
Black — 0691; Black, Powder — 0637; Blue, Midnight — 0667; Charcoal — 0483; Grey — 0648;
Grey, Oyster — 0662; Orange — 0606; Red — 0650; Red, MTD — 0638; Silver — 0629; Yellow — 0674.
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