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Troy-Bilt 21A-663E766 6.5hp (2006) Roto-Tiller

Model: 21A-663E766 6.5HP Roto-Tiller (2006)

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Drive Shaft, Input Pinion Shaft and Gear Assemblies

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1
Bearing, Tapered Roller (with race) MTD-941-0107

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2
Spur Gear MTD-717-04690

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3
Key, 3/16 sq x 1 MTD-GW-9301

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4
Main Drive Shaft Drive shaft piece with integral, single-lead, work-hardened front worm, and integral, six-lead, work-hardened rear worm. Also includes pressed on GW-1714 and GW-930) MTD-GW-20912

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5
Washer, Flat, 1.50 x 1.75 x .010 NOTE: Shim between drive shaft rear bearing and rear bearing cap to achieve 5-to-10 thousandths of an inch (.005-.010) end play on drive shaft. MTD-736-04308

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5
Washer, Flat, 1.50 x 1.75 x .03 NOTE: Shim between drive shaft rear bearing and rear bearing cap to achieve 5-to-10 thousandths of an inch (.005-.010) end play on drive shaft. MTD-736-04307

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5
Washer, Flat, 1.50 x 1.75 x .005 NOTE: Shim between drive shaft rear bearing and rear bearing cap to achieve 5-to-10 thousandths of an inch (.005-.010) end play on drive shaft. MTD-736-04306

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5
Shim Set (Incl. two 1224-2 and one GW-1224-3) MTD-GW-1325C

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6
BOLT- hex. hd., 5/16"-24 x 1-1/8", engine mounting MTD-710-0672

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7
Washer, Disc Spring (concave surface faces pulley) MTD-736-04193

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8
KEY-SQ 3/16X1.50 MTD-714-0133

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9
Transmission Pulley MTD-619-04123

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10
Support Washer MTD-736-04079

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11
Oil Seal, .750 x 125 MTD-921-04044

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12
Retaining Ring-external MTD-716-0101

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13
Thrust Washer MTD-GW-9953

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14
Bushing MTD-GW-9428

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15
Set Screw, 5/16-18 x 3/8 (Specify GRADE 5 if ordering part locally) MTD-GW-9677

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16
PINION SHAFT MTD-711-05388

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17
Pinion Gear MTD-717-04689

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18
Retaining Ring (external) MTD-GW-9093

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19
Pinion Assy. (Incl. One each refs. 16, 17 & 18) MTD-GW-20799

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20
Retaining Ring, Int MTD-716-04102
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