product name

Yard Man YM90 41ADY90C901 Gas String Trimmer

Model: YM90 41ADY90C901 41ADY90C901 YM90

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product name

Boom and Trimmer Parts

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1
Throttle Housing Assembly (includes 2-4) MTD-753-04339

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2
Throttle Trigger Lock-Out MTD-753-04340

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3
THROTTLE TRIGGERBC:MTD MTD-753-06754

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4
Throttle Trigger Spring MTD-791-182690

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5
Switch Assembly MTD-791-182405

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6
Throttle Cable MTD-753-04405

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7
Harness Clip MTD-791-610327

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8
Upper Drive Shaft Housing Assembly MTD-753-04236

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9
J-Handle Assembly MTD-791-181099

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10
Handle Bracket Assembly (includes 11-16) 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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16
Anti-Rotation Screw MTD-791-145569

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17
Split Boom Coupler (Incl Ref No. 10-13) MTD-753-1190

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20
Adjustment Knob MTD-791-181618B

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21
Adjustment Knob Nut MTD-712-04018A

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22
Lower Drive Shaft Housing Assembly MTD-791-180804

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23
Lower Flexible Drive Shaft MTD-791-613300

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24
Shield Mount Screw Assembly MTD-791-182200

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25
2 piece Gearbox Assembly (includes 26-28 & 42) MTD-791-182193

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26
SCREW #10-24X11/16 T-25 MTD-791-182195

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27
Anti-Rotation Screw MTD-791-145569

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28
Blade Driver MTD-791-182196

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29
Blade Shield/Shield Mount MTD-791-147492

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30
Shield Mounting Screw MTD-791-683304

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31
Shield and Blade Assembly (includes 32) MTD-753-1191

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32
Blade Assembly MTD-791-682061

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33
Retaining Washer MTD-791-147490

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34
Spool Shaft MTD-791-612483

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35
Outer Spool Assembly (includes 36) MTD-791-683301

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36
RETAINER MTD-1772

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38
Inner Reel MTD-791-147495

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39
Bump Head Knob Assembly MTD-791-180814B

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40
4-Tooth Blade MTD-791-145873B


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42

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Blade Retaining Kit (includes 33 & 41) (NOT SHOWN) MTD-791-180014B

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Locking Rod Tool (NOT SHOWN) MTD-791-613226

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Shoulder Harness (NOT SHOWN) MTD-791-682075B

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Bump Head Assembly Optional Accessories MTD-791-147498

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Reel and Line Assembly (NOT SHOWN) Optional Accessories MTD-753-1224

Engine Parts

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1
Air Cleaner Cover Assembly (includes 2 & 37) MTD-753-04810

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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
Choke Lever MTD-753-04227

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5
Choke Plate (includes 6) MTD-753-04419

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6
Carburetor Assembly (includes 7 & 18) MTD-753-04338

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7
CARBURETOR GASKET MTD-791P610675

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8
Carb Mount Screw MTD-791-181860

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9
Primer and Hose Assembly MTD-791-683974B

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10
Carb Mount Assembly (includes 8, 11 & 12) MTD-753-1196

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11
Reed Assembly MTD-791-684451

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12
Carburetor Mount Gasket MTD-753-1208

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13
Crank Case Service Assembly (includes 10) MTD-753-04332

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14
Rear Mounting Pad MTD-791-612134

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15
Fuel Tank Assembly (includes 16-18) MTD-753-04307

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16
Fuel Tank Cap MTD-791-182612

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17
Fuel Return Line MTD-791-181086

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18
Fuel Line Assembly MTD-753-04233

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19
Front Mounting Pad MTD-791-145308

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20
Shroud Extension & Stand (includes 37) MTD-753-04702

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21
Flywheel Assembly MTD-753-05240

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22

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23
Recoil Pulley Assembly MTD-753-1199

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24
Recoil Spring MTD-753-04286

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25
Rope Guide MTD-753-1200

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26
Pulley Retainer MTD-753-04288

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27
Pull Handle MTD-631-04164B


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29
Pressure Plate Assembly (includes 30) MTD-753-04417

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30
Screw, 10-9 x .50 MTD-1755

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31
Starter Housing Assembly (includes 23-30, 32 & 37) MTD-753-04335

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32
SCREW:10-32X.5 MTD-1964

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33

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34
Starter Clutch Assembly MTD-753-05860

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35
Clutch Drum Assembly MTD-791-153592

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36
Clutch Cover Assembly (includes 37-40) MTD-753-1204

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37
Cover Screw MTD-791-181345

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38
Anti-Rotation Screw MTD-791-182519

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39

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40

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41
Wire Leads and Sleeve MTD-791-182798

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42
Ground Tab MTD-791-611063

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43
Module Assembly MTD-753-04336

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44
Spark Plug MTD-791-610311B

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45
Muffler Assembly (includes 47, 48 & spark arrestor) MTD-753-05169

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46
Exhaust Gasket MTD-753-04619

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47
Muffler Mounting Bolts MTD-710-04188A

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48
Cylinder Assembly (includes 51 & 52) MTD-753-04814

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49
Piston and Rod Assembly MTD-753-04367

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50
Cylinder Gasket MTD-753-04182

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51
Cylinder Bolt MTD-791-182723

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Spark Arrestor (NOT SHOWN) MTD-753-04689

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Piston Ring Set (NOT SHOWN) MTD-753-1209

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Short Block Assembly (includes 8, 13, 44 & 48-51) (NOT SHOWN) MTD-753-04812

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