Troy-Bilt 21A-643C266 - Bronco RotoTillers (2007)

Find 21A-643C266_(2007) Part By Symptom

Choose a symptom to view parts that fix it.

Won't start

27%

Leaks oil

17%

Engine rotates but tines don't

17%

Hard to start

11%

Tines stall under load

Vibrates excessively

One tine / one side doesn't rotate

Engine lacks power

Starts, runs for a while, then dies

Blows black smoke from exhaust

Show All Symptoms

Find 21A-643C266_(2007) Part by Symptom

Popular Parts for 21A-643C266_(2007)

Nut-flglk 5/16-18

4 Reviews

25+ in stock

$3.75

Belt-v 3l X

44 Reviews

25+ in stock

$26.33

Nut-flange Lk.nylo

6 Reviews

25+ in stock

$3.87

Screw-hex Wash Sf

9 Reviews

22 in stock

$4.06

Nut-flglk

6 Reviews

25+ in stock

$3.82

Belt-v Fwd Drv 4

12 Reviews

7 in stock

$21.01

Seal-oil

11 Reviews

5 in stock

$10.07

Belt-v Rev Drv 3

5 Reviews

6 in stock

$19.91

Search within model

Questions & Answers

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Page A

Hotspots

Fig #

Use 936-0159

$3.90

Part Number:736-0159

Ships in 1 - 4 business days

Note: Not Used in This Application

$3.90

Pulley-engine

$51.53

Part Number:756-04198A

Ships in 1 - 4 business days

Note: Bronco Model

$51.53

Pulley Asm-trans

$79.11

Part Number:656-04023A

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$79.11

Pulley Asm-trans Tiller

$66.15

Part Number:656-04005A

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$66.15

Pulley-rev Idler

$23.37

Part Number:756-04169

Ships in 1 - 4 business days

$23.37

Guard-trns Pulley

$31.51

Part Number:786-04095-0637

Ships in 1 - 4 business days

$31.51

Belt-v Fwd Drv 4

$21.01

Part Number:954-04090

In Stock, 4 available

Note: Length: 12 inches Width: 1/2 inch - Super Bronco And Pro-Line Models

$21.01

Belt-v Rev Drv 3

$19.91

Part Number:954-04091

In Stock, 5 available

Note: (Reverse)(Closer to the Engine, V-Side Out)

$19.91

Cover-belt

$36.30

Part Number:731-05268

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$36.30

Spring-rev Return

$5.48

Part Number:1916724

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$5.48

A10

Guide-belt

$9.55

Part Number:732-04081

Ships in 1 - 4 business days

$9.55

A11

Guide-forward Belt

$8.64

Part Number:1916726

In Stock, 10 available

$8.64

A12

Use 786-04068

$13.20

Part Number:1916794001

Ships in 1 - 4 business days

$13.20

A13

786-04069 Bracket-

$13.82

Part Number:1916795001

Ships in 1 - 4 business days

$13.82

A14

Bracket:belt Cover

$42.51

Part Number:786-04070-0637

Ships in 1 - 4 business days

$42.51

A15

Spacer-pivot Idler

$5.95

Part Number:748-04087A

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$5.95

A16

Idler Arm-reverse

$15.19

Part Number:786-04276

Ships in 1 - 4 business days

$15.19

A17

Arm:idler:forward

$33.15

Part Number:786-04275-0637

Ships in 1 - 4 business days

Note: Bronco Model

$33.15

A18

Screw-hex 5/16-24

$4.05

Part Number:710-0672

Ships in 1 - 4 business days

Note: For 10 & 11 Hp - Super Bronco And Pro-Line Models

$4.05

A18

Screw-hex Special

$4.06

Part Number:710-0888

Ships in 1 - 4 business days

Note: (Special)

$4.06

A19

Hex Hd. Screw 5/16-24 X 5/8

$4.13

Part Number:710-0237

Ships in 1 - 4 business days

Note: Tightening Torque: 150-300 In. Lbs.

$4.13

A20

Hex Bolt 5/16-18 X .1in. Lg. (

$3.84

Part Number:710-0376

Ships in 1 - 4 business days

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num

$3.84

A21

Screw-hex Flange 5

$4.32

Part Number:710-04049

Ships in 1 - 4 business days

Note: Bronco Model

$4.32

A22

Screw-hex 3/8-16 X

$4.61

Part Number:710-0347

Ships in 1 - 4 business days

Note: Purchase Locally - Super Bronco And Pro-Line Models

$4.61

A22

Screw-hex 3/8-16 X

$4.13

Part Number:710-0520

Ships in 1 - 4 business days

Note: Attaching the Chute Crank Support Tube.

$4.13

A23

Screw-hex Wash Sf

$4.06

Part Number:710-0599

In Stock, 22 available

Note: Not Used on Units With Electric P.T.O. - Super Bronco And Pro-Line Models

$4.06

A24

Bolt-5/16-18 X 2.0

$4.23

Part Number:710-3103

Ships in 1 - 4 business days

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an

$4.23

A25

Use 912-3000

$4.09

Part Number:712-3000

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$4.09

A26

Hex L-nut 5/16-18 Thd.

$5.85

Part Number:712-3009

Ships in 1 - 4 business days

Note: Bronco Model

$5.85

A27

Washer-lock 5/16

$4.51

Part Number:936-0119

In Stock, 12 available

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an - Bronco Model

$4.51

A28

Spacer-.380 Id X .

$4.09

Part Number:950-0535

Ships in 1 - 4 business days

Note: Model Lc-40 Only - Super Bronco And Pro-Line Models

$4.09

A28

Washer-fl

$4.09

Part Number:736-3050

Ships in 1 - 4 business days

$4.09

A29

Flat Washer, .260 X .720 X .06

$6.08

Part Number:736-3090

Ships in 1 - 4 business days

Note: Part of Motor, Switch & Cord Ass'y. Comp. (Ref. 49)

$6.08

A30

Use 936-0452

$4.25

Part Number:736-0452

Ships in 1 - 4 business days

$4.25

A31

Hex Bolt 3/8-24 X 1.5

$6.82

Part Number:710-0459A

In Stock, 1 available

Note: Special

$6.82

A32

Washer

$6.24

Part Number:GW-50027

Ships in 1 - 4 business days

$6.24

A33

Spring-return

$13.02

Part Number:732-04085

Ships in 1 - 4 business days

$13.02

A35

Pulley-idler

$32.87

Part Number:756-04170

Ships in 1 - 4 business days

$32.87

A36

Key-sq 3/16 X 1.00

$3.39

Part Number:914-0105

Ships in 1 - 4 business days

Note: Honda Engine

$3.39

A37

Washer-fl-344x1.00

$4.15

Part Number:736-3078

Ships in 1 - 4 business days

Note: Code: N

$4.15

A38

Washer-belvl .8

$6.24

Part Number:736-04193

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$6.24

A39

Belt-v 3l X

$26.33

Part Number:954-04032B

In Stock, 25+ available

Note: Pro-Line Model

$26.33

A39

Screw-hex 5/16-18

$4.29

Part Number:710-0395

Ships in 1 - 4 business days

Note: Purchase Locally

$4.29

A40

Nut-flglk 5/16-18

$3.75

Part Number:712-04063

In Stock, 25+ available

Note: Use With 618-04378a Transmission, Double "D" Input Shaft - Bronco Model

$3.75

A41

Spacer .315

$10.50

Part Number:750-0258

Ships in 1 - 4 business days

Note: (Used W/46\\\\ - Bronco Model

$10.50

A42

Washer-fl

$6.24

Part Number:736-0315

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$6.24

A42

Washer:flat

$6.24

Part Number:736-04192

Ships in 1 - 4 business days

$6.24

A43

Washer

$3.94

Part Number:736-0242

In Stock, 21 available

Note: Not Used in This Application - Pro-Line Model

$3.94

A44

Bumper

$50.02

Part Number:749-04193-0637

Ships in 1 - 4 business days

Note: Pro-Line Model

$50.02

A45

Nut-push

$6.31

Part Number:726-0201

Ships in 1 - 4 business days

Note: (Not Used on This Model)

$6.31

A46

Pin-klik

$5.96

Part Number:714-0143A

Ships in 1 - 4 business days

Note: Model No.(S) E633e, E6b3h - Bronco Model

$5.96

A47

Wheel:compl:10.0

$128.12

Part Number:734-04188

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$128.12

A48

Wheel:compl:13 X 5

$170.91

Part Number:934-04232

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$170.91

A48A

Rim Only (6.0 X 3.25) Obsolete - Not Available

$2.99

Part Number:634-04218

Discontinued

Note: Super Bronco And Pro-Line Models

A48C

Valve-tubeless Air

$4.02

Part Number:934-0255

Ships in 1 - 4 business days

Note: Model No.(S) E633e, E6b3h

$4.02

A49

Pin:cot:int

$7.40

Part Number:714-04048

Ships in 1 - 4 business days

$7.40

A50

Pin:clevis

$3.82

Part Number:711-04126

Ships in 1 - 4 business days

Note: Bronco Model

$3.82

Page B

Hotspots

Fig #

Ring-retaining

$4.05

Part Number:716-04102

Ships in 1 - 4 business days

$4.05

Bearing-roller-3/4

$43.92

Part Number:941-0107

Ships in 1 - 4 business days

Note: (Service Only)

$43.92

Washer-flat .765 X

$4.06

Part Number:736-04304

Ships in 1 - 4 business days

$4.06

Shaft-drive

$157.10

Part Number:911-04110

Ships in 1 - 4 business days

Note: Use As Required To Obtain Between .005" And .015" Allowable End-Play

$157.10

Washer-flat 1.50 X

$4.05

Part Number:736-04308

Ships in 1 - 4 business days

Note: Washers Used to Obtain .005 to .015 Allowable End Play on Drive Shaft - Use As Required To Obtain Between .005" And .015" Allowable End-Play

$4.05

Washer-flat 1.50 X

$4.05

Part Number:736-04307

In Stock, 11 available

Note: Washers Used to Obtain .005 to .015 Allowable End Play on Drive Shaft - Use As Required To Obtain Between .005" And .015" Allowable End-Play

$4.05

Washer-flat 1.50 X

$4.05

Part Number:736-04306

Ships in 1 - 4 business days

Note: Washers Used to Obtain .005 to .015 Allowable End Play on Drive Shaft - Use As Required To Obtain Between .005" And .015" Allowable End-Play

$4.05

Washer-flat 1.50 X

$3.70

Part Number:736-04305

Ships in 1 - 4 business days

Note: (the Flat Washers Listed Are Used as Required to Obtain .005 to .015" Allowable End Play on the Drive Shaft.) - Incl. The Following Shims: Two #1224-1, Two #1224-2 & One #1224-4

$3.70

Shim Set

$14.32

Part Number:GW-1325C

Ships in 1 - 4 business days

Note: Bronco Model

$14.32

Page C

Hotspots

Fig #

Shield Asm-tine Br

$82.29

Part Number:686-04076A-0638

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$82.29

Shield Asm-tine Br

$180.43

Part Number:686-04077B-0638

Ships in 1 - 4 business days

$180.43

Screw-hex 5/16-18

$4.29

Part Number:710-0395

Ships in 1 - 4 business days

Note: Purchase Locally

$4.29

Screw-hex 1/4-20 X

$3.84

Part Number:710-0597

Ships in 1 - 4 business days

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num

$3.84

Screw-hex Wash Sf

$4.06

Part Number:710-0599

In Stock, 22 available

Note: Not Used on Units With Electric P.T.O.

$4.06

Screw-hex 5/16-18

$6.31

Part Number:710-0874

Ships in 1 - 4 business days

Note: If Equipped

$6.31

Hex Bolt 5/16-18 X .75

$3.95

Part Number:710-3008

In Stock, 4 available

Note: Models With Electric Pto Only

$3.95

Nut-flglk 5/16-18

$3.75

Part Number:712-04063

In Stock, 25+ available

Note: Use With 618-04378a Transmission, Double "D" Input Shaft

$3.75

Nut-flglk

$3.82

Part Number:712-04064

In Stock, 25+ available

Note: Models Without Clutch Lock

$3.82

Pin-spring Spir 1/

$4.60

Part Number:715-0108

Ships in 1 - 4 business days

$4.60

C10

Spring:torsion

$4.05

Part Number:732-04320

Ships in 1 - 4 business days

$4.05

C11

Fl-wash. .34

$5.85

Part Number:736-0275

Ships in 1 - 4 business days

$5.85

C12

Spacer:split

$13.04

Part Number:750-04149

Ships in 1 - 4 business days

$13.04

C13

Bushing

$2.99

Part Number:GW-55088

Ships in 1 - 4 business days

$2.99

C14

Spacer:split

$6.31

Part Number:750-04556

Ships in 1 - 4 business days

$6.31

C15

Arm:rev:stop

$23.63

Part Number:786-04092

Ships in 1 - 4 business days

Note: *Choose Color When Ordering*

$23.63

C16

Bracket:supt

$24.40

Part Number:786-04098

Ships in 1 - 4 business days

$24.40

C18

Bracket-hood Stop

$18.48

Part Number:786-04191-0637

Ships in 1 - 4 business days

$18.48

C22

Hex Bolt 1/4-20 X 1.25 Lg.

$3.84

Part Number:710-0106

Ships in 1 - 4 business days

$3.84

C23

Screw-solt.h.10-24

$4.78

Part Number:710-04163

Ships in 1 - 4 business days

$4.78

C24

Hex L-nut 5/16-18 Thd.

$5.85

Part Number:712-3009

Ships in 1 - 4 business days

$5.85

C25

Hex Nut #10-24 Thd.

$3.66

Part Number:712-0121

In Stock, 18 available

$3.66

C26

Use 912-0291

$4.13

Part Number:712-0291

Ships in 1 - 4 business days

Note: (Optional)

$4.13

C27

Spring-fwrd Clutch

$6.52

Part Number:732-04185

In Stock, 20 available

$6.52

C28

Cable:drive:tuffy

$37.34

Part Number:946-04208

In Stock, 5 available

Note: Super Bronco And Pro-Line Models

$37.34

C29

Cable:reverse Cont

$58.98

Part Number:946-04058

Ships in 1 - 4 business days

$58.98

C30

Bail-forward Clutc

$47.62

Part Number:1916106001

Ships in 1 - 4 business days

$47.62

C31

Handle: Upper: Til

$109.63

Part Number:749-04084-0638

Ships in 1 - 4 business days

$109.63

C32

Handle-lower Tille

$51.18

Part Number:749-04742-0638

Ships in 1 - 4 business days

$51.18

C33

Tab: Conduit Mount

$2.99

Part Number:786-04106

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$2.99

C35

Bracket-handle Supt

$16.21

Part Number:786-04188-0638

Ships in 1 - 4 business days

$16.21

C36

Panel-handle

$26.00

Part Number:786-04200-0638

Ships in 1 - 4 business days

$26.00

C37

Screw-hex 3/8-16 X

$4.13

Part Number:710-0216

Ships in 1 - 4 business days

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num

$4.13

C38

Belt-v 3l X

$26.33

Part Number:954-04032B

In Stock, 25+ available

$26.33

C39

Use 912-3000

$4.09

Part Number:712-3000

Ships in 1 - 4 business days

$4.09

C40

Washer-lock 5/16

$4.51

Part Number:936-0119

In Stock, 12 available

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an

$4.51

C41

Tie-cable 7

$3.63

Part Number:725-0157

Ships in 1 - 4 business days

Note: (W/ Heated Grips)

$3.63

C42

Washer-fl

$4.09

Part Number:736-3050

Ships in 1 - 4 business days

$4.09

C43

Nut-flange Lk.nylo

$3.87

Part Number:712-04065

In Stock, 19 available

Note: (Not Shown)

$3.87

C44

Screw-hex 3/8-16 X

$4.61

Part Number:710-0347

Ships in 1 - 4 business days

Note: Purchase Locally

$4.61

C45

Screw-hex 3/8-16 X

$3.97

Part Number:710-0514

Ships in 1 - 4 business days

Note: (Optional)

$3.97

C46

Screw-hhflg 5/16-

$4.39

Part Number:710-04048

Ships in 1 - 4 business days

Note: See Tine Chart

$4.39

C47

Tine-bolo 10 Rh

$16.77

Part Number:742-04226-0637

Ships in 1 - 4 business days

Note: See Tine Chart

$16.77

C48

Tine-bolo 10 Lh

$16.77

Part Number:742-04227-0637

Ships in 1 - 4 business days

Note: Bronco Model

$16.77

C49

Holder Asm:tine:tu

$50.23

Part Number:686-04066

Ships in 1 - 4 business days

Note: Super Bronco And Pro-Line Models

$50.23

C49

Tine Holder

$38.37

Part Number:686-05008-0637

Ships in 1 - 4 business days

Note: Incl. 8 Rh Tines, 8 Lh Tines & Required Hardware; Bronco, Super Bronco And Pro-Line Models

$38.37

Tines-bolo Set Of

$249.62

Part Number:GW-1901

Ships in 1 - 4 business days

$249.62

Page D

Hotspots

Fig #

Resistor Spark Plug

$2.99

Part Number:34645

Ships in 1 - 4 business days

$2.99

Pre Filter

$6.24

Part Number:36634

Ships in 1 - 4 business days

$6.24

Air Filter

$9.61

Part Number:30-740

Ships in 1 - 4 business days

$9.61

Belt-v Fwd Drv 4

$21.01

Part Number:954-04090

In Stock, 4 available

Note: Length: 12 inches Width: 1/2 inch - Fwd

$21.01

Pulley-idler

$32.87

Part Number:756-04170

Ships in 1 - 4 business days

$32.87

Cable:drive:tuffy

$37.34

Part Number:946-04208

In Stock, 5 available

Note: See Tine Chart

$37.34

Tine-bolo 10 Lh

$16.77

Part Number:742-04227-0637

Ships in 1 - 4 business days

Note: See Tine Chart

$16.77

Tine-bolo 10 Rh

$16.77

Part Number:742-04226-0637

Ships in 1 - 4 business days

$16.77

Wheel:compl:10.0

$128.12

Part Number:734-04188

Ships in 1 - 4 business days

$128.12

Page E

Hotspots

Fig #

Tine-bolo 10 Rh

$16.77

Part Number:742-04226-0637

Ships in 1 - 4 business days

$16.77

Tine-bolo 10 Lh

$16.77

Part Number:742-04227-0637

Ships in 1 - 4 business days

$16.77

Tine-bolo 12 Rh

$26.83

Part Number:742-04224-0637

Ships in 1 - 4 business days

$26.83

Tine-bolo 12 Lh

$26.83

Part Number:742-04223-0637

Ships in 1 - 4 business days

$26.83

Kit-tine Cast Iron

$297.53

Part Number:1901118A

Ships in 1 - 4 business days

$297.53

Tines-bolo Set Of

$249.62

Part Number:GW-1901

Ships in 1 - 4 business days

$249.62

Page F

Hotspots

Fig #

Ring-retaining Ext

$4.05

Part Number:716-04104

Ships in 1 - 4 business days

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play

$4.05

Washer-flat 1.015

$4.05

Part Number:736-04309

Ships in 1 - 4 business days

Note: (33 - Use As Required To Obtain Between .005" And .030" Allowable End-Play

$4.05

Washer-flat:1.015

$6.24

Part Number:736-04260

Ships in 1 - 4 business days

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play

$6.24

Washer-flat:1.015

$6.24

Part Number:736-04259

Ships in 1 - 4 business days

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play

$6.24

Washer-flat:1.015

$3.65

Part Number:736-04258

Ships in 1 - 4 business days

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play

$3.65

Washer-flat:1.015

$3.65

Part Number:736-04257

Ships in 1 - 4 business days

$3.65

Bushing-1.005 X 1.

$16.03

Part Number:941-04300

In Stock, 19 available

Note: Bronco Model

$16.03

Shaft:wheel:tuffy

$44.61

Part Number:911-04512

Ships in 1 - 4 business days

Note: Super Bronco Model

$44.61

Kit-service Wheel

$374.95

Part Number:753-05578

Ships in 1 - 4 business days

Note: Pro-Line Model

$374.95

Shaft:wheel:bronco

$70.74

Part Number:911-04486

Ships in 1 - 4 business days

$70.74

Key-hi Pro .25 X 1

$6.24

Part Number:714-04059

Ships in 1 - 4 business days

$6.24

Washer-flat 1.015

$4.15

Part Number:736-04310

Ships in 1 - 4 business days

$4.15

Gear-worm 61t

$154.05

Part Number:917-04380

Ships in 1 - 4 business days

$154.05

Shaft-tiller Tine

$130.96

Part Number:911-04078

Ships in 1 - 4 business days

$130.96

F10

Key Woodruff .25 X

$8.74

Part Number:GW-1104

Ships in 1 - 4 business days

$8.74

F11

Gear-worm 30t Lh

$134.50

Part Number:917-04381

Ships in 1 - 4 business days

$134.50

Page G

Hotspots

Fig #

Plug-pipe 3/8 Npt

$6.31

Part Number:737-04202

Ships in 1 - 4 business days

$6.31

Screw-hex Flange 5

$4.32

Part Number:710-04049

Ships in 1 - 4 business days

$4.32

Washer-lock 5/16

$4.51

Part Number:936-0119

In Stock, 12 available

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an

$4.51

Cover-trans Rear 1

$10.16

Part Number:1916109001

Ships in 1 - 4 business days

$10.16

Cover-trans Housin

$22.95

Part Number:786-04359

Ships in 1 - 4 business days

$22.95

Gasket-gear Housin

$6.34

Part Number:921-04229

Ships in 1 - 4 business days

$6.34

Seal-oil

$11.90

Part Number:921-04030

In Stock, 25+ available

$11.90

Seal-oil

$10.07

Part Number:921-04031

In Stock, 5 available

$10.07

Housing-transmissi

$209.78

Part Number:919-04013

Ships in 1 - 4 business days

$209.78

G10

Seal-oil

$18.22

Part Number:921-04036

In Stock, 5 available

Note: Tine Shaft Seal (Not Shown) - Included With Transmission When Purchased As An Assembly Only. Remove & Discard When Installing The Transmission On Tiller.

$18.22

G11