product name

Yard Machines 12A-378N718 (1997) Self-Propelled Walk-Behind Mower

Model: 12A-378N718 (1997)

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Axle and Wheel Assembly

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1

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2
AB Pan Scr. 1/4-14 x .50 Lg. MTD-710-1348

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3
Cotter Pin 3/32 x .750 MTD-714-0507

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4
Extension Spring MTD-932-0820

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5
Adj. Rod MTD-747-0920

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6
Spr. Washer MTD-736-0105

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7
ShI. Bolt .498 x 1.445 3/8-16 MTD-738-0102

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8
Front Wheel Bar Tread 8" x 1.75" MTD-634-0020

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Front Wheel "T" Tread 8" x 1.75" MTD-734-1268

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Front Wheel "S" Wave 8" x 2" Yellow Rim MTD-734-1790

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Wheels - Front MTD-753-08093

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Front Wheel "S" Wave 8" x 2" MTD-734-1826

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Wheel Ass'y. Comp. MTD-734-1978

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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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Rear Wheels "S" Wave 8" x 2" Yellow Rim MTD-734-1791

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Rear Wheels Front Wheel "S" Wave 8" x 2" MTD-734-1826

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Rear Wheels "S" Wave 8" x 2" MTD-734-1826

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Whl. Comp. 8 x 2 Pl. (Rear) MTD-734-1979

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BALL BEARING MTD-941-0484

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Front Wheels "S" Wave Bearings 8" x 2" Yellow Rim MTD-741-04840

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Front Wheels "S" Wave Bearings 8" x 2" MTD-734-1826

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BALL BEARING MTD-941-0484

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9
Hub Cap Gray (3-1/2" Dia.) MTD-920-0249

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Black (4-1/4" Dia) Hub Caps MTD-731-0354

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Gray (4-1/4" Dia) Hub Caps MTD-731-03555A

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Hub Cap - Yellow MTD-731-1426B

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

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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

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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

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731-1561
Engine Shroud - Black MTD-731-1561

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7510042823

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731-1402A
Engine Shroud - Yellow MTD-731-1402A

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710-1258

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7510014208
Engine Shroud - Black MTD-7510014208

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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

General Assembly

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1
Std. Control Handle (Std.) MTD-747-0824B-0637

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Std. Control Handle (Deluxe) MTD-747-0824B-0637

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2

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3
Oval C-Sunk Mach.-Scr. MTD-710-0605

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4
Curved Spring Wash. .66" I.D. MTD-936-0501

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5
Handle Knob 1/4-20 Thd. MTD-720-0279

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6
Throttle Body MTD-946-0875

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7
Hex L-Nut 1/4-20 MTD-712-0324

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8
Upper Handle MTD-749-0439E-0637

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9
Throttle Lever MTD-946-0876

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12
Throttle Wire 55" Lg. MTD-946-0671A

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Throttle Cable MTD-946-1115

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Throttle Wire-58" Lg. MTD-946-0674A

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13
Rope Guide MTD-710-1205

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14
TRAILSHIELD WIRE MTD-732P0700

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15
Hand Knob MTD-920-0276

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16
Control Cable (brake) MTD-946-0554

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Control Cable - 55" (Tecumseh) MTD-946-0555

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Control Cable 43.0" Lg. MTD-946-0551

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17
Cable Tie MTD-725-0157

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18
Cr.Hd. Bolt 5 / 16-18 x 2" Lg. MTD-710-1174

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19
Lower Handle MTD-749-0907B

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20
Throttle Box Comp. (Incl. Ref. 3,4,6,7,9) MTD-811-0185

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21
Hex Self-Tap Scr. #10-32 x .62" MTD-710-1237

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Hex Sems Scr. #10-32 x .3" Lg. MTD-710-0871

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Spark Plug Boot MTD-735-0639

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23
Cable Clamp (B&S) MTD-BS-690798

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CLIP-CONDUIT MTD-TC-27793

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Screw H.L. 12-24 MTD-710-1220

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25
Screw Mach. B Tapp. MTD-710-0351

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27
Engine MTD-NA

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28
Belt Cover MTD-731-1714A

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35
Int. Cotter Pin 5/15" Dia. MTD-714-0104

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37
Pivot Rod MTD-747-0922

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38
Shoulder Spacer MTD-950-1068

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39
Torsion Spring MTD-932-0809

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44
Handle Brkt. Ass'y - L.H. MTD-782-3029

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Screw, Tap 1/4-20 MTD-710-0653

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47
U-Nut #10-16 Thd. MTD-912-0400

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48
Handle Brkt. Ass'y - R.H. MTD-782-3030

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Screw AB 1/4-20 MTD-710-1348

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52
Hex L-Wash. Hd. Scr. 3/8-16 x 1" MTD-710-0654A

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21" Deck Ass'y MTD-682-0037

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Rear Trailing Shield MTD-731-04998

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57
Rear Discharge Door MTD-782-7599B-0637

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58
Grassbag Mtg. Bracket MTD-782-9050-0637

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59
Hdtop Bag Cover MTD-731-1882

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Hdtop Bag Cover w/MTD Logo MTD-731-1769

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Hdtop Bag Cover w/MTD Logo MTD-631-0065

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Hdtop Bag Cover w/MTD Logo MTD-631-0065

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61
GRASSCATCHER FRAME MTD-747-0919-0637

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Grass Bag - Black MTD-664-0080

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Grassbag- Soft top w/MTD Logo MTD-664-0079

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72
BLADE BELL SUPPORT MTD-736-0524B-1

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73
21-inch Mulching Blade MTD-942-0741A

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21" BLADE (HI LIFT) MTD-942-0641

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Blade Adaptor Kit w/Star MTD-753-0609

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Hex Bolt 3/8-24 x 2.5 Lg. MTD-710-1257

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77
Fl. Wash. .885 x 1.85 x .06 MTD-736-0514

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78
Spring Washer, .890 x 1.70 MTD-936-0513

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79
Pulley Half- Upper MTD-756-0962

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Pulley Half - Lower MTD-756-0979

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81
Wheel Assembly MTD-NA

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Axle Assy: RR MTD-638-0005

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Trans axle Assembly MTD-682-7518-0637

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Cover Assy - Chain MTD-682-7524

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85
Screw, 5/16-18 x .625 MTD-710-0604A

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Scr. TT 1/4-20 MTD-710-0653

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87
SCREW 1/4-20 x .620 GR5 MTD-710-0751

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Scr. AB 1/4-20 MTD-710-0896

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89
Scr 3/8 - 16 x 1.25 MTD-710-1315

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Clevis Pin .50 Dia x 4.82 Lg. MTD-911-0835

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91

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92
Pin-Cotter .125 O.D. x .75 MTD-714-0474

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93
Grip-Foam MTD-720-0230

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94
Spring Lever MTD-732-0803A

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95
Torsion Spring MTD-732-0818

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96
SPRING WASHER BELL MTD-736-0270

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97
Wash.-Flat .508 I.D. x 1.00.D.x .020 MTD-736-0369

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98
Shoulder Nut.825 x .165 Lg. MTD-938-0529

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99
Flge Bearing .506 ID x .590 Lg MTD-741-0324A

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100
Bearing-Fig. Hex MTD-741-0522

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101
Bearing-Sleeve MTD-741-0978

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102
Wheel Ratchet MTD-948-0318

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103
Spacer - .385 x .625 x .700 MTD-750-0807

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104
Shlder Spacer, .385ID x .715Lg MTD-950-1056

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105
Spacer Slv. .520 I.D. x .950 Lg. MTD-750-1075

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106
Pivot Arm Assembly MTD-782-0566B-0637

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107
Lift Assist Spring Bracket MTD-782-0568B-0637

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108
Drive Cable MTD-946-0711B

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109
Control Cover Half-Lower MTD-753-0833

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110
Control Cover Half-Lower MTD-753-0833

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111
Control Cover Half-Lower MTD-753-0833

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112
Drive Control MTD-731-0620A

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113
Scr. AB #10-12:.75 Lg. MTD-710-0841

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114
Weld Top L. 1/4-20 MTD-712-0414

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115
Pawl Plate MTD-16855

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116
Pawl LH (Not Shown) MTD-948-0188B

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Pawl R.H. MTD-748-0381

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117
Shldr. Scr. .340 x .285 MTD-738-0137

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118
Spring, Ratchet MTD-10622B

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119
Hub Cap Gray (3-1/2" Dia.) MTD-920-0249

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Black (4-1/4" Dia) Hub Caps MTD-731-0354

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Gray (4-1/4" Dia) Hub Caps MTD-731-03555A

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Hub Cap - Yellow MTD-731-1426B

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120
Mulch Plug MTD-931-1685

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121
Chute Deflector MTD-931-1461

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122
Chute Mounting Rod MTD-747-0958

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123
Hex-L-Nut 1/4-20 thd. MTD-712-0324

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124
Mach. Scr. 1/4-20 MTD-710-0924

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125
FOAM GRIP - 9" (Optional) MTD-720-0294A

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126
Grass Bag MTD-954-0271

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127
Scr. 1/4-14:.625 Hxindwsh MTD-710-0896

Idler Bracket amd 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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Hex Bearing Cup MTD-16500A-0637

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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
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. Electric start models only. MTD-756-0656

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16
SPRING WASHER BELL Electric start models only. MTD-736-0270

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Jam Nut, 1/4-28, LH Electric start models only. MTD-712-04326

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18
Shld, Spa. .375" x Dia. x .170 Electric start models only. MTD-738-0440

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20
Shld. Bolt .375" Dia. x .40" Electric start models only. MTD-738-0826

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Pulley Ass'y Idler w/ Bearing Electric start models only. MTD-956-0008

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Needle Brg. .375" x .31" Electric start models only. MTD-741-0556

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24
Idler Bracket Electric start models only. MTD-682-0054

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25
Hex Patch L-Nut 1/4-28 Thd. Electric start models only. MTD-712-0138

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26
Extension Spring 1.12" Lg. Electric start models only. 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" Electric start models only. MTD-736-0410

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36
Belt Keeper Electric start models only. MTD-782-7569

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37
Plug 1/4" x .437" MTD-721-0325

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Transmission Comp. MTD-918-0263A
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Processing