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Yard Machines 12A-478N353 (1997) Self-Propelled Walk-Behind Mower

Model: 12A-478N353 (1997)

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Engine Shrouds

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751B281439
Engine Shroud - Dark Red MTD-751B281439
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751B281440
Engine Shroud - Black MTD-751B281440
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751B281443
Engine Shroud - Bright Red MTD-751B281443
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710-1256
Screw MTD-710-1256
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731-1395A
Engine Shroud - Red MTD-731-1395A
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731-1396A
Engine Shroud - Black MTD-731-1396A
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731-1397A
Engine Shroud - Black MTD-731-1396A
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710-1256
Screw MTD-710-1256
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731-1587A
Engine Shroud - Black MTD-731-1587A
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731-1603A
Engine Shroud - Yellow MTD-731-1603A
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731-1610A
Engine Shroud - Pewter MTD-731-1610A
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710-1184
Screw MTD-710-1184
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731-1561
Engine Shroud - Black MTD-731-1561
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7510042823
Screw MTD-7510042823
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731-1402A
Engine Shroud - Yellow MTD-731-1402A
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710-1258
Screw MTD-710-1258
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7510014208
Engine Shroud - Black MTD-7510014208
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7510042823
Screw MTD-7510042823
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731-1585B
Engine Shroud - Black MTD-731-1585B
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710-1274
SCREW-PAN #10-32X1 MTD-910-1274
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731-1586B
Engine Shroud - Black MTD-731-1586B
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731-1612A
Engine Shroud - Red MTD-731-1612A
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7510042823
Screw MTD-7510042823

Front Axle and Wheel Assembly

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1
Torx Mach. AB-Tap Scr. 1/4 x .62" Lg. MTD-710-1017
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2
Height Adjustment Support MTD-721-0216
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3
Height Adjustment Plate MTD-17323
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4
L-Wash. 1/4" I.D. MTD-936-0329
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6
Height Adj. Connecting Rod MTD-747-0699
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7
Cotter Pin 3/32" Dia. MTD-714-0507
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8
Front Axle Ass'y. MTD-17022-0637
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9
Hex L-Wash. Hd. AB-Tap Scr. 1/4 x .38" MTD-710-0352
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10
Extension Spring 2.39" Lg. MTD-732-0589
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11
Bell-Wash. .380" I.D. x .88" MTD-736-0105
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12
Ball Bearing 1/2" I.D. MTD-NA
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Front Wheels Bar Tread 8" x 1.75" MTD-634-0020
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Front Wheels "T" Tread 8" x 1.75" MTD-734-1268
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Front/Rear Wheel 8" x 2" "S" Wave MTD-734-1826
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Wheels - Front MTD-753-08093
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Front Wheels "S" Wave 8" x 2" Yellow Rim MTD-734-1790
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BALL BEARING MTD-941-0484
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BALL BEARING MTD-941-0484
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BALL BEARING MTD-941-0484
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Rear Wheels Bar Tread 8" x 1.75" MTD-634-0020
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Rear Wheels "T" Tread 8" x 1.75" MTD-734-1412
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Front/Rear Wheel 8" x 2" "S" Wave MTD-734-1826
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Front/Rear Wheel 8" x 2" "S" Wave MTD-734-1826
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Rear Wheels "S" Wave 8" x 2" Yellow Rim MTD-734-1791
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Rear Wheels "T" Tread w/Bearings 8" x 1.75" MTD-741-0486B
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Rear Wheels "S" Wave w/Bearings 8" x 2" Gray Rim MTD-741-0486B
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Rear Wheels "S" Wave w/Bearings 8" x 2" Yellow Rim MTD-741-0486B
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13
Hub Cap (See Below) MTD-NA
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Hub Cap Gray (3-1/2" Dia.) MTD-920-0249
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Black (4-1/4" Dia.) MTD-731-0354
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Gray (4-1/4" Dia.) MTD-731-0355A
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Hub Cap MTD-731-0981C
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Hub Cap - Yellow MTD-731-1426B
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14
Wheel Ass'y. Comp.-Front MTD-NA
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Front Wheels Bar Tread 8" x 1.75" MTD-634-0020
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Front Wheels "T" Tread 8" x 1.75" MTD-734-1268
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Front/Rear Wheel 8" x 2" "S" Wave MTD-734-1826
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Wheels - Front MTD-753-08093
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Front Wheels "S" Wave 8" x 2" Yellow Rim MTD-734-1790
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BALL BEARING MTD-941-0484
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BALL BEARING MTD-941-0484
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BALL BEARING MTD-941-0484
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Rear Wheels Bar Tread 8" x 1.75" MTD-634-0020
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Rear Wheels "T" Tread 8" x 1.75" MTD-734-1412
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Front/Rear Wheel 8" x 2" "S" Wave MTD-734-1826
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Front/Rear Wheel 8" x 2" "S" Wave MTD-734-1826
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Rear Wheels "S" Wave 8" x 2" Yellow Rim MTD-734-1791
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Rear Wheels "T" Tread w/Bearings 8" x 1.75" MTD-741-0486B
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Rear Wheels "S" Wave w/Bearings 8" x 2" Gray Rim MTD-741-0486B
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Rear Wheels "S" Wave w/Bearings 8" x 2" Yellow Rim MTD-741-0486B
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15
Shld. Bolt ,498" Dia. x 1.45" MTD-738-0102
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Wave Washer.510 ID x.750 OD (Used w/Ball Bearings) MTD-936-0504
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Mach. Scr. 1/4-20 x .5" Lg. MTD-710-0286
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18
Hex Jam Nut 1/4-20 Thd. MTD-912-0298

General Assembly

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1
Std. Control Handle MTD-747-0824B-0637
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Std. Control Handle (Deluxe) MTD-747-0824B-0637
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2
Handle Knob 1/4-20 Thd. MTD-720-0279
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3
FOAM GRIP - 9" (Optional) MTD-720-0294A
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4
Curved Spring Wash. .66" I.D. MTD-936-0501
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Hex L-Nut 1/4-20 Thd. MTD-712-0324
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Throttle Wire 55" Lg. For model (478 Series) MTD-946-0671A
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Throttle Cable For model (475 Series) MTD-946-1115
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Throttle Box Comp. (Incl. Ref. 4, 5, 8, 9, 10) MTD-811-0185
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Throttle Lever MTD-946-0876
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Throttle Body MTD-946-0875
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Oval C-Sunk Scr. MTD-710-0605
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Control Cable (brake) For model (478 Series) MTD-946-0554
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Control Cable - 55" (Tecumseh) For model (475 Series) MTD-946-0555
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Upper Handle MTD-749-0539C-0637
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Rope Guide MTD-710-1205
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Spring Washer, .890 x 1.70 MTD-936-0513
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Curved Hd. Bolt 5/16-18 x 2" MTD-710-1174
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Bowed Washer MTD-936-0286
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Cable Tie MTD-725-0157
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Stop Brkt. MTD-782-7010
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Hand Knob MTD-920-0276
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Lower Handle MTD-749-0928A-0637
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HEX NUT 5/16-18 For faster service obtain nuts, bolts and washers locally. If these cannot be obtained locally, order by part number and size as shown in parts list. MTD-712-3010
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Fl-Wash. .88" I.D. x 1.85" MTD-736-0514
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SPRING WASHER BELL MTD-736-0270
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Truss Mach. Tap Scr. 1" Lg. MTD-710-0969
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Bell-Wash. 5/16" I.D. MTD-736-0242
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SPRING WASHER BELL MTD-736-0270
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Spark Plug Boot (Optional) MTD-735-0639
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Engine MTD-NA
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Control Cover Half-Lower MTD-753-0833
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Control Cover Half-Lower MTD-753-0833
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Drive Control MTD-731-0620A
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Drive Cable MTD-946-0711B
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Flat C-Sunk Hd. Tap Scr.#10 x .75" Lg. MTD-710-0841
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Control Cover Half-Lower MTD-753-0833
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Hardtop Bag Cover MTD-631-0003
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Hardtop Bag Cover MTD-631-0003
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Grass Bag MTD-964-0252
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Truss Mach. Scr. 1/4-20 x 1.0" Lg. MTD-710-0166A
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Fl-Wash. .281" I.D. x .62" MTD-736-0463
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Hex Nut 1/4-20 Thd. For faster service obtain nuts, bolts and washers locally. If these cannot be obtained locally, order by part number and size as shown in parts list. MTD-912-0287
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Front Catcher Frame MTD-764-0411-0637
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Rear Catcher Frame MTD-749-0736A
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Chute Deflector MTD-931-0859A
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Deflector Plug MTD-731-0970B
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Seal-Extrusion MTD-731-0858
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Grip MTD-720-0223
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Spring Lever MTD-732-0580
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Torsion Spring-R.H. MTD-732-0578B
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Torsion Spring-L.H. MTD-732-0577B
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Spacer, .260 x .372 x 1.030 MTD-750-0566A
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Handle Brkt. Ass'y.-L.H. MTD-12297B
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Hinge Pin 17.75" Lg. MTD-747-0698B
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PUSH NUT MTD-726-0106
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SHOULDER PIN 3/8-24X1.43 MTD-711-0805
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UNKNOWN MTD-NA
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Hex Jam Nut 3/8-24 Thd. MTD-712-0711
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Hex L-Nut 3/8-24 Thd. MTD-912-0296
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Bell-Wash. .38" I.D. x .88" MTD-736-0105
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Hex Tap Scr. 1/4-20 x 1.5" Lg. MTD-710-0778
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Hex Scr. 3/8-16 x 1" Lg. MTD-710-0654A
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21" Deck Ass'y. MTD-16997
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Handle Brkt. Ass'y.-R.H. MTD-12296B-0637
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Hex AB-Tap Scr. 1/4 x .62" Lg. MTD-710-0896
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Hex Tap Scr. 3/8-16 x .75" Lg. MTD-710-0623
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Hex Tap Scr. 1/4-20 x .5" Lg. MTD-710-0599
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Spacer .383" I.D. x .503" O.D. MTD-950-0736
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Crankshaft Spacer MTD-748-0358
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Pulley Half-Lower MTD-756-0961
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Pulley Half-Upper MTD-756-0962
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21-inch Mulching Blade MTD-942-0741A
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BLADE BELL SUPPORT MTD-736-0524B-1
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Hex Bolt 3/8-24 x 1.5" Lg. MTD-710-1044
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Blade Adapter Kit (Incl. Ref. 13-15) MTD-753-06315
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L-Wash. 1/4" I.D. For faster service obtain nuts, bolts and washers locally. If these cannot be obtained locally, order by part number and size as shown in parts list. MTD-936-0329
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Hex Jam Nut 1/4-20 Thd. MTD-912-0298
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Truss Mach. Scr. 1/4-20 x 1.0" Lg. MTD-710-0166A
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Ext. Baffle MTD-682-5009
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CARRIAGE BOLT 1/4-20X.50" For faster service obtain nuts, bolts and washers locally. If these cannot be obtained locally, order by part number and size as shown in parts list. MTD-710-05177
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Rear Panel Baffle MTD-17006
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Corner Plug MTD-731-0931
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Torx Mach. AB-Tap Scr. 1/4 x .62" Lg. MTD-710-1017
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Hex Tap Scr. 1/4 x .38" Lg. MTD-710-0653
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Rear Flap MTD-731-1488
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Rear Chute Baffle MTD-17008-0637
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Retaining Strip MTD-782-5010
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Hub Cap (Optional) MTD-NA
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Plastic Spring MTD-NA
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Pawl .345" I.D.-R.H. MTD-748-0381
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Pawl LH (Not Shown) MTD-948-0188B
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Weld Top L-Nut 1/4-20 Thd. MTD-712-0414
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Cotter Pin 1/8" Dia. MTD-714-0115
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Wheel Ratchet MTD-948-0318
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Shld. Bolt .342" Dia. x .268" MTD-738-0137
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Rear Wheel Ass'y. Comp.(See Page 5) MTD-NA
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Bearing 1/2" I.D. (See Page 5) MTD-NA
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Shld. Spacer .50" Dia. MTD-750-0624
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SCREW 1/4-20 x .620 GR5 MTD-710-0751
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SHOULDER PIN 3/8-24X1.43 MTD-711-0805
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Pawl Plate MTD-16855
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102
Chain Cover Ass'y. MTD-17053A
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103
Flge Bearing .506 ID x .590 Lg MTD-741-0324A
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104
Fl-Wash. .531" I.D. x .93" MTD-736-0160
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105
Rear Axle Ass'y. MTD-738-0719A
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106
Hex Flange Bearing MTD-741-0522
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107
Chain Axle Ass'y. MTD-17009
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108
Internal L-Wash. 1/4" I.D. MTD-736-0498
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?109
Spacer .513" I.D. MTD-748-0190
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110
Extension Spring 3.8" Lg. MTD-732-0481
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111
Spacer.325" I.D. MTD-950-0589
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112
V - Belt MTD-954-0346
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113
Grass Catcher Locking Knob MTD-920-0224
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114
Internal Cotter Pin 5/16" Dia. MTD-714-0104
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115
#48 Chain .50" Pitch x 30 Links MTD-713-0353
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116
Transmission Comp. MTD-917-0417B
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117
UNKNOWN MTD-NA
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120
Cable Clamp (B&S) For model (478 Series) MTD-BS-690798
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Screw Tap MTD-710-1237
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122
Mulching Plug (Optional) MTD-931-1446
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123
Chute Deflector MTD-931-1461
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124
Chute Mounting Bracket MTD-782-7011-0637
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125
Hex Sems Nut 1/4-20 Thd. MTD-712-0271
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Truss Mach. Sir. 1/4-20 x.5" Lg. MTD-710-0286

Idler Bracket and Shaft Assembly

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1
Hex Bolt 1/4-20 x 1.25" Lg. MTD-710-1062
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2
L-Wash. 1/4" I.D. MTD-936-0329
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3
Upper Hsg. Half MTD-717-0418A
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4
#48 Sprocket 7 Tooth x 1/2 Pitch MTD-713-0400
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FLAT WASHER MTD-936-0336
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6
Hex Flange Brg. .631" I.D. MTD-741-0413
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7
Hex Bearing Cup MTD-16500A-0637
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8
Thrust Wash. .382" I.D. x .70 O.D. MTD-736-0314
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9
Thrust Brg. .375" I.D. x .812" O.D. MTD-741-0479
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11 Tooth Helical Gear MTD-917-1216
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12
Flange Bearing MTD-748-0208A
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13
Oil Seal MTD-721-0212
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15
Fl-Pulley 5.06" O.D. Not Part of Transmission Complete. MTD-756-0330A
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16
SPRING WASHER BELL Not Part of Transmission Complete. MTD-736-0270
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Jam Nut, 1/4-28, LH Not Part of Transmission Complete. MTD-712-04326
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18
Shld. Spa. .375" x Dia. x .170 Not Part of Transmission Complete. MTD-738-0440
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20
Shld. Bolt .375" Dia. x .40" Not Part of Transmission Complete. MTD-738-0826
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21
Pulley Ass'y Idler w/ Bearing (Inc. Ref. #22) Not Part of Transmission Complete. MTD-956-0008
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22
Needle Brg. .375" x .31" Not Part of Transmission Complete. MTD-741-0556
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24
Idler Bracket Not Part of Transmission Complete. MTD-682-0054
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25
Hex Patch L-Nut 1/4-28 Thd. Not Part of Transmission Complete. MTD-712-0138
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26
Extension Spring 1.12" Lg. Not Part of Transmission Complete. MTD-732-0357A
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27
Lower Hsg. Half MTD-717-0419B
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28
Flange Bearing .566 ID MTD-941-0415
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29
Shaft Ass'y. MTD-717-0616A
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30
Flange Bearing .629" Dia. MTD-741-0414
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31
Oil Seal .625" Dia. MTD-721-0213
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34
Hex B-Tap Scr #10-16 x .75" MTD-710-0589
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35
Hex Washer .26" x .88" Not Part of Transmission Complete. MTD-736-0410
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36
Belt Keeper Not Part of Transmission Complete. MTD-782-7569
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37
Plug 1/4" x .437" MTD-721-0325
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Transmission Comp. MTD-917-0417B
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Processing