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Troy-Bilt 521 Squall 5hp 21" Walk-Behind 31AE285-063 (2003) Snow Thrower

Model: 521 Squall 5HP 21"" Walk-Behind (2003)

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Chute Assembly

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1
Carriage Bolt 5/16-18 x 1.0" MTD-710-04071

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2
Carriage Bolt 5/16-18 x 0.750" MTD-710-0451

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3
Hex Screw 1/4-20 x 0.75" MTD-710-3015

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4
LOCK NUT 1/4 MTD-912-3027

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5
Hex Lock Nut, 5/16-18 MTD-712-3009

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6
Hand Knob MTD-720-0284

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7
Flange Keeper: Chute MTD-731-0851A

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8
Lower Chute MTD-731-0915C

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9
UPPER CHUTE (W/LBL MANUAL TILT) MTD-731-04426C

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10

Drive Assembly

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1
3-Prong Extension Cord MTD-929-0071B

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2
Hex Bolt 5/16-24 x 0.75" MTD-710-0157

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3
Hex Bolt 5/16-24 x 1.75" MTD-710-0409

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4
TT Sems Screw MTD-710-0502A

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5
SCREW 1/4-20 x .620 GR5 MTD-710-0751

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6
Screw, #10-16 x .625 MTD-710-04669

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7
Hex Screw 1/4-20 x 0.50" MTD-710-3013

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8

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9

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10
Hose Clamp MTD-726-0205

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11
Choke Knob MTD-731-2825

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13
LOCK WASHER 5/16 MTD-936-0119

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14
Beleville Washer MTD-736-0242

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15
Lock Washer MTD-936-0329

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16
BUSHING .380 ID MTD-941-0475

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17
Fuel Line Hose MTD-751-0535

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18

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19
FUEL CAP (MAX 10% ETHANOL) MTD-751-0603A

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20
Auger Drive Belt MTD-954-0101A

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21
Pulley Half, .625 x 2.25 MTD-956-0416B

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22

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23
Engine Mount MTD-784-0322

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24
Support Bracket MTD-784-0323-0637

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25
Support Plate: Engine Mount MTD-784-0374-0637

General Assembly

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1
UPPER CHUTE CRANK (POWDER BLACK) MTD-684-0174-0637

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2
Lower Chute Crank Assembly MTD-684-0177

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3
Mitten Grip Bracket MTD-984-0178

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4
Shroud (Model 521) MTD-731-04075

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Shroud (Model 721) MTD-731-2569

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5
TT Screw 1/4-15 x 0.75" MTD-710-0895

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6
Screw, #10-16 x .625 MTD-710-04669

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7
Hex Fl. Screw 5/16-18 x 1.5" MTD-710-1882

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8
Hex Bolt 5/16-18 x 1.375" MTD-710-3083

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9

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10
Lock Nut MTD-712-0429

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11
HEX NUT 5/16-18 MTD-712-3010

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12
Cotter Pin MTD-714-0104

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13
Cotter Pin MTD-714-0507

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14
Knob: Chute Crank MTD-720-0201A


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16
Key Switch-Electric Start MTD-925-2018

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17
Push Cap MTD-726-0100

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18
LOCK WASHER 5/16 MTD-936-0119

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19
Flat Washer MTD-736-0185

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20
Internal Lock Washer MTD-736-0225

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21
Flat Washer MTD-736-0400

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22
Saddle Washer MTD-736-0451

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23
Recoil Handle, Mitten MTD-7510009636

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24
Cap Assembly, Spark Plug Access - Black (not shown) MTD-684-0189

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25
Upper Handle: Gull Wing MTD-749-0711A

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26
Lower Handle MTD-749-0796B

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27
CARRIAGE BOLT 1/4-20X.50" MTD-710-05177

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28
Hex Bolt MTD-710-0191

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29
Machine Screw MTD-710-0323

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30
B Screw 1/4-14 x 0.375" MTD-710-0352

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31
Carriage Bolt MTD-710-0451

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32
TT Screw 1/4-20 x 0.75" MTD-710-0642

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33
TT Screw 3/8-16 x 0.5" MTD-710-0773

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34
AB Screw 1/4-14 x 0.625" MTD-710-0896

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35
SCREW 1/4-20 X.500 MTD-710-0599

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36
Axle, .35 x .5 x 20.75 MTD-753-05480

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37
Jam Lock Nut MTD-712-0116

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38
HEX NUT 5/16-18 MTD-712-3010

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39
LOCK NUT 1/4 MTD-912-3027

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40
Shave Plate MTD-731-1033

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41
Extension Spring MTD-732-0357A

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42
Flat Washer MTD-736-0108

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43
LOCK WASHER 5/16 MTD-936-0119

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44
Flat Washer MTD-736-0176

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45
Beleville Washer MTD-736-0242

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46
Flat Washer MTD-736-0326

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47
Lock Washer MTD-936-0329

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48
BUSHING .380 ID MTD-941-0475

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49
BALL BEARING MTD-941-0600

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50
Cable, 41.78" MTD-946-0910A

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51
Shoulder Spacer MTD-748-0234

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52
Flat Idler MTD-756-0313

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53
Bearing Cup MTD-784-5174-0637

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54
KIT-IDLER/BRAKE BRACKET MTD-753-05156

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55
BELT COVER SINGLE (POWDER BLACK) MTD-790-00045C-0637

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56
Auger Ass'y. 21" MTD-984-04027A

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57
Chute Crank Bracket MTD-784-5720-0637

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58
Auger Housing Assembly MTD-684-0196

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59
Wheel Assembly MTD-734-1797

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60
Hex Fl. Screw 5/16-18 x 1.25" MTD-710-1090

Handle Assembly

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1
Carriage Screw 5/16-18 x 2.0" MTD-710-0487

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2
Machine Screw MTD-710-1270

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3
Hex Lock Nut 1/4-20 MTD-712-0324

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4
Hand Knob w/ Wing Nut MTD-720-0284

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5
Foam Grip MTD-720-0295

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6
Cable Tie MTD-725-0157

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7
Saddle Washer MTD-736-0451

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8
Control Housing MTD-746-0883

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9
Auger Bail MTD-747-0956

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10
Upper Handle: Gull Wing MTD-749-0711A
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