product name

Yard Man YM137 41AC137C901 Electric String Trimmer

Model: YM137 41AC137C901 41AC137C901 YM137

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product name

Boom & Trimmer Assembly 2006 & prior

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1
Shoulder Harness Clamp MTD-791-610327

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2

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3
D-Handle Hardware Assembly MTD-791-181587

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4
Upper Drive Shaft Housing Assembly MTD-753-04345

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5
Split Boom Coupler (includes 6-9) MTD-791-182928



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8
Adjustment Knob MTD-791-181951

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9
Knob Retaining Nut MTD-791-181886

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10
Lower Drive Shaft Housing Assembly MTD-753-04089

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11
Flexible Drive Shaft MTD-791-181166

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12
Lower Clamp Assembly MTD-791-153597

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13
Guard Mounting Hardware MTD-791-180547

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14
Guard Assembly MTD-791-180548

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15
Blade Assembly MTD-791-180553

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16
Anti-Rotation Screw MTD-791-145569

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17
Gearbox (includes 16) MTD-791-181566

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18
Outer Spool Assembly (includes 19) MTD-791-181457

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19

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20
Thrust Washer MTD-791-181561

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21
Small Spring MTD-791-181459

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22

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23

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24

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25

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26

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27
Reel and Line Assembly MTD-791-181460B

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28
Large Spring MTD-791-181465B

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29
Foam Seal MTD-791-181467

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30
Bump Knob Assembly (includes 28 & 29) MTD-791-181468B

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Reel and Line Assembly Not Shown - Optional Accessories MTD-791-181460B

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Complete Cutting Head Assembly (includes 16-30) Not Shown - Optional Accessories MTD-791-181470

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Reel and Line Assembly Not Shown - Optional Accessories MTD-791-181460B

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Shoulder Strap Assembly Not Shown - Optional Accessories MTD-791-682075B

Boom & Trimmer Assembly 2007 & after

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1
Shoulder Harness Clamp MTD-791-610327

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2

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3
D-Handle Hardware Assembly MTD-791-181587

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4
Upper Drive Shaft Housing Assembly MTD-753-04345

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5
Split Boom Coupler (includes 6-9) MTD-791-182928



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8
Adjustment Knob MTD-791-181951

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9
Knob Retaining Nut MTD-791-181886

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10
Lower Drive Shaft Housing Assembly MTD-753-04089

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11
Flexible Drive Shaft MTD-753-05182

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12
Guard Mounting Hardware MTD-791-180547

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13
Guard Assembly MTD-791-180548

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14
Blade Assembly MTD-791-180553

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15
Anti-Rotation Screw MTD-791-145569

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16
Gearbox (includes 17-29) MTD-753-05188

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17
Outer Spool Assembly (includes 18) MTD-791-181457

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18

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19
Thrust Washer MTD-791-181561

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20
Small Spring MTD-791-181459

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21

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22

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23

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24

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25

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26
Reel and Line Assembly MTD-791-181460B

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27
Large Spring MTD-791-181465B

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28
Foam Seal MTD-791-181467

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29
Bump Knob Assembly (includes 27 & 28) MTD-791-181468B

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xx
Reel and Line Assembly Optional Accessories MTD-791-181460B

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xx
Reel and Line Assembly Optional Accessories MTD-791-181460B

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Shoulder Strap Assembly Optional Accessories MTD-791-682075B

Motor and Housing Parts

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1
Screw, Housing Set (Qty. 11) MTD-791-180300

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2
Anti-Rotation Screw MTD-791-145569

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3
Motor Housing Assembly MTD-753-04608

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4
Two-Speed Switch Assembly MTD-791-180302

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5
Lead Wires MTD-791-180559

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7

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8
Terminal Block MTD-791-180305

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9
Motor Assembly (includes 11 & 12) MTD-791-180154

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10

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11
Cooling Fan MTD-791-180155

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12
Recessed Plug Assembly MTD-791-181645
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