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Yard Man 121R 21A-121R900 Tillers

Model: 121R 21A-121R900 21A-121R900 121R

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.Quick Reference

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Spark Plug MTD-791-610311B

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Pre Filter MTD-NA

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Air Filter MTD-791-180350B

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Fuel Filter MTD-NA

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Drive Belt MTD-NA

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Idler Pulley MTD-NA

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Clutch Cable MTD-NA

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Tines Outer (LH) MTD-791-182729

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Tines Outer (RH) MTD-791-182730

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Tines Inner (LH) MTD-791-182730

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Tines Inner (RH) MTD-791-182729

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Wheel Assembly MTD-753-04437


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Boom & Cultivator Parts

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1
Throttle Trigger Assembly MTD-791-182881

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2
Handle Bar Assembliy, Upper (includes 3& 4) MTD-791-182882


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4
Tube Closure MTD-791-182676

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5
WASH, FLAT SPECIAL MTD-4150



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8
Drive Shaft Housing Assembly MTD-753-04988

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9
Flexible Drive Shaft MTD-753-04987

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10
Handle Bracket Assembly (includes 11-15) MTD-791-683295

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12
Upper Handle Clamp MTD-791-181812

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13
Middle Handle Clamp MTD-791-181813

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14
Lower Handle Clamp MTD-791-181814



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17
Lower Handle Bar MTD-791-182900

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18
Hardware, Handle Bar Mounting (lower) MTD-791-182681

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19
Wheel Bracket Mounting Hardware MTD-791-147467

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20
Guard Mounting Hardware MTD-753-04266

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22
Wheel Bracket Assembly MTD-753-05020

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22
Wheel Bracket Assembly (Solid Black Wheels) MTD-753-05024

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23
Wheel Assembly (Black & White Wheels) MTD-791-180944

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23
Wheel Assembly (Solid Black Wheels) MTD-753-04437

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24
Gear Box Assembly For round hole tines MTD-753-04489

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24
Gear Box Assembly For "D" hole tines MTD-753-06063

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25
SCREW #10-24X11/16 T-25 MTD-791-182195

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26
Hex Tap Scr. 1/4-20 x .5" Lg. MTD-710-0599

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27
Tine Fastener Assembly MTD-791-147473

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28
Tine Assembly (Left Outer or Right Inner) "D" Shape Hole MTD-753-05984

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28
Tine Assembly (Left Outer or Right Inner) Round Hole MTD-791-182729

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29
Tine Assembly (Left Inner or Right Outer) "D" Shape Hole MTD-753-05983

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29
Tine Assembly (Left Inner or Right Outer) Round Hole MTD-791-182730

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30

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31
Switch Bracket MTD-791-182672

Engine Parts

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1
Air Cleaner Assembly (includes 2 & 38) MTD-753-04511

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2
Air Cleaner Filter MTD-791-180350B

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3
Carburetor Mounting Screw Assembly MTD-791-180351

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4
SPRING WASHER .317 X .625 X .020 MTD-936-0271

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5
Choke Knob & Screw MTD-791-182202

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6
Choke Lever Assembly (includes 5) MTD-753-04418

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7
Choke Lever & Plate (includes 6) MTD-753-04419

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8
Carburetor Assembly (includes 9 & 20) MTD-753-04333

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9
CARBURETOR GASKET MTD-791P610675

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10
Carb Mount Screw MTD-791-181860

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11
Primer and Hose Assembly MTD-791-683974B

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12
Carb Mount Assembly (includes 10, 13 & 14) MTD-753-1196

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13
Reed Assembly MTD-791-684451

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14
Carburetor Mount Gasket MTD-753-1208

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15
Crank Case Service Assembly (includes 10) MTD-753-04922

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16
Rear Mounting Pad MTD-791-612134

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17
Fuel Tank Assembly (includes 18-20) MTD-753-04306

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18
Fuel Cap Assembly MTD-791-182529

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19
Fuel Return Line MTD-791-181086

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20
Fuel Line Assembly MTD-791-682039

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21
Front Mounting Pad MTD-791-145308

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22
Shroud Extension and Stand (includes 38) MTD-753-04611

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23
Flywheel Assembly MTD-753-05240

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24

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25
Recoil Pulley MTD-753-1199

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26
Recoil Spring MTD-791-613102

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27
Pulley Retainer Assembly MTD-791-180930

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28
Rope Guide MTD-791-611061

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29
Fuel Tank Guard Assembly MTD-791-180317

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30
Pull Handle MTD-631-04164B


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32
Housing Screw MTD-791-181912

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33
Starter Housing Assembly (includes items 25-28, 30-32, & 38) MTD-791-182776

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34

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35
Starter Clutch Assembly MTD-753-05860

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36
Clutch Drum Assembly MTD-791-153592

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37
Clutch Cover Assembly (includes 38) MTD-791-180098

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38
Clutch Cover Screw MTD-791-181345

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39
Upper Clamp Assembly MTD-791-153597

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40
Module Assembly (includes 50) MTD-753-04337

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41
Wire Lead MTD-791-182880

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42
Spark Plug MTD-791-610311B

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43
Muffler Assembly (includes item 44 & 45) MTD-753-04926

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44
Exhaust Gasket MTD-753-04619

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45
Muffler Mounting Bolts MTD-710-04188A

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46
Cylinder Assembly (includes items 48 & 49) MTD-753-04814

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47
Piston & Rod Assembly MTD-753-04367

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48
Cylinder Gasket MTD-753-04182

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49
Cylinder Bolt MTD-791-182723

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50
Ground Tab MTD-791-611063

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Piston Ring (NOT SHOWN) MTD-753-1209

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Spark Arrestor (NOT SHOWN) MTD-753-04925

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Short Block Assembly (items 10, 15, 42 & 46-49) (NOT SHOWN) MTD-753-04986

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Clutch Springs (Qty. 2) (NOT SHOWN) MTD-791-181599
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