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  Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Parts
Troy-Bilt Bronco RotoTillers Replacement For Model 21A-643B766 (2006)

Troy-Bilt Bronco RotoTillers Replacement Parts For Model 21A-643B766 (2006)

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Showing All Parts
Page A
Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Page A Diagram
 Fig #
A1
Use 936-0159
Minimum Quantity of 2 Required
 $5.28

Part Number:736-0159

In Stock

In Stock

Note: Not Used in This Application
 $5.28
In Stock
 $5.28
A2
Pulley-engine
 $69.81

Part Number:756-04198A

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $69.81
Usually ships in 7 - 12 business days
 $69.81
A3
Pulley Asm-trans Obsolete - Not Available
 $83.11

Part Number:656-04023A

Discontinued

Discontinued
 $83.11
Discontinued
A3
Pulley Asm-trans Tiller Obsolete - Not Available
 $68.13

Part Number:656-04005A

Discontinued

Discontinued
 $68.13
Discontinued
A4
Pulley-rev Idler
 $25.62

Part Number:756-04169

In Stock

In Stock
 $25.62
In Stock
 $25.62
A5
Guard-trns Pulley Obsolete - Not Available
 $33.10

Part Number:786-04095-0637

Discontinued

Discontinued
 $33.10
Discontinued
A6
Belt-v Fwd Drv 4
 $21.43

Part Number:954-04090

In Stock

In Stock

Note: Length: 12 inches Width: 1/2 inch
 $21.43
In Stock
 $21.43
A7
Belt-v Rev Drv 3
 $20.31

Part Number:954-04091

In Stock

In Stock

Note: (Reverse)(Closer to the Engine, V-Side Out)
 $20.31
In Stock
 $20.31
A8
Cover-belt
 $49.16

Part Number:731-05268

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $49.16
Usually ships in 7 - 12 business days
 $49.16
A9
Spring-rev Return Obsolete - Not Available
 $5.48

Part Number:1916724

Discontinued

Discontinued
 $5.48
Discontinued
A10
Guide-belt
 $12.66

Part Number:732-04081

In Stock

In Stock
 $12.66
In Stock
 $12.66
A11
Guide-forward Belt Obsolete - Not Available
 $8.99

Part Number:1916726

Discontinued

Discontinued
 $8.99
Discontinued
A12
Use 786-04068 Obsolete - Not Available
 $13.60

Part Number:1916794001

Discontinued

Discontinued
 $13.60
Discontinued
A13
786-04069 Bracket- Obsolete - Not Available
 $14.23

Part Number:1916795001

Discontinued

Discontinued
 $14.23
Discontinued
A14
Bracket:belt Cover Obsolete - Not Available
 $46.61

Part Number:786-04070-0637

Discontinued

Discontinued
 $46.61
Discontinued
A15
Spacer-pivot Idler
 $8.07

Part Number:748-04087A

In Stock

In Stock
 $8.07
In Stock
 $8.07
A16
Idler Arm-reverse
 $20.59

Part Number:786-04276

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $20.59
Usually ships in 7 - 12 business days
 $20.59
A17
Arm:idler:forward
 $44.91

Part Number:786-04275-0637

In Stock

In Stock
 $44.91
In Stock
 $44.91
A18
Screw-hex 5/16-24
Minimum Quantity of 2 Required
 $5.48

Part Number:710-0672

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: For 10 & 11 Hp
 $5.48
Usually ships in 7 - 12 business days
 $5.48
A18
Screw-hex Special
Minimum Quantity of 2 Required
 $4.44

Part Number:710-0888

In Stock

In Stock

Note: (Special)
 $4.44
In Stock
 $4.44
A19
Screw-hex 5/16-24
Minimum Quantity of 2 Required
 $5.60

Part Number:710-0237

In Stock

In Stock

Note: Tightening Torque: 150-300 In. Lbs.
 $5.60
In Stock
 $5.60
A20
Hex Bolt 5/16-18 X .1in. Lg. (
Minimum Quantity of 2 Required
 $4.21

Part Number:710-0376

In Stock

In Stock

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num
 $4.21
In Stock
 $4.21
A21
Screw-hex Flange 5
 $5.86

Part Number:710-04049

In Stock

In Stock
 $5.86
In Stock
 $5.86
A22
Screw-hex 3/8-16 X
Minimum Quantity of 2 Required
 $5.06

Part Number:710-0347

In Stock

In Stock

Note: Purchase Locally
 $5.06
In Stock
 $5.06
A22
Screw-hex 3/8-16 X
Minimum Quantity of 2 Required
 $5.60

Part Number:710-0520

In Stock

In Stock

Note: Attaching the Chute Crank Support Tube.
 $5.60
In Stock
 $5.60
A23
Screw-hex Wash Sf
Minimum Quantity of 2 Required
 $4.44

Part Number:710-0599

In Stock

In Stock

Note: Not Used on Units With Electric P.T.O.
 $4.44
In Stock
 $4.44
A24
Bolt-5/16-18 X 2.0
 $4.63

Part Number:710-3103

In Stock

In Stock

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
 $4.63
In Stock
 $4.63
A25
Nut, Hexlck, 3/8-16, Cntrlck
 $4.49

Part Number:712-3000

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $4.49
Usually ships in 7 - 12 business days
 $4.49
A26
Hex L-nut 5/16-18 Thd.
 $6.03

Part Number:712-3009

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $6.03
Usually ships in 7 - 12 business days
 $6.03
A27
Washer-lock 5/16
Minimum Quantity of 2 Required
 $4.95

Part Number:936-0119

In Stock

In Stock

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
 $4.95
In Stock
 $4.95
A28
Spacer-.380 Id X .
Minimum Quantity of 2 Required
 $5.57

Part Number:950-0535

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Model Lc-40 Only
 $5.57
Usually ships in 7 - 12 business days
 $5.57
A28
Washer-fl
 $4.49

Part Number:736-3050

In Stock

In Stock
 $4.49
In Stock
 $4.49
A29
Washer-fl
 $8.24

Part Number:736-3090

In Stock

In Stock

Note: Part of Motor, Switch & Cord Ass'y. Comp. (Ref. 49)
 $8.24
In Stock
 $8.24
A30
Use 936-0452
Minimum Quantity of 2 Required
 $4.66

Part Number:736-0452

In Stock

In Stock
 $4.66
In Stock
 $4.66
A31
Screw-hex 3/8-24 X
 $7.49

Part Number:710-0459A

In Stock

In Stock

Note: Special
 $7.49
In Stock
 $7.49
A32
Washer
 $8.45

Part Number:GW-50027

In Stock

In Stock
 $8.45
In Stock
 $8.45
A33
Spring-return
 $17.66

Part Number:732-04085

In Stock

In Stock
 $17.66
In Stock
 $17.66
A34
Bracket:cable Mt Obsolete - Not Available
 $4.99

Part Number:786-04107

Discontinued

Discontinued
 $4.99
Discontinued
A35
Pulley-idler
 $44.53

Part Number:756-04170

In Stock

In Stock
 $44.53
In Stock
 $44.53
A36
Key-sq 3/16 X 1.00
Minimum Quantity of 2 Required
 $3.99

Part Number:914-0105

In Stock

In Stock

Note: Honda Engine
 $3.99
In Stock
 $3.99
A37
Washer-fl-344x1.00
Minimum Quantity of 2 Required
 $4.55

Part Number:736-3078

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Code: N
 $4.55
Usually ships in 7 - 12 business days
 $4.55
A38
Washer-belvl .8
 $8.45

Part Number:736-04193

In Stock

In Stock
 $8.45
In Stock
 $8.45
A39
Belt-v 3l X
 $26.85

Part Number:954-04032B

In Stock

In Stock
 $26.85
In Stock
 $26.85
A39
Screw-hex 5/16-18
 $5.83

Part Number:710-0395

In Stock

In Stock

Note: Purchase Locally
 $5.83
In Stock
 $5.83
A40
Nut-flglk 5/16-18
Minimum Quantity of 2 Required
 $4.10

Part Number:712-04063

In Stock

In Stock

Note: Use With 618-04378a Transmission, Double "D" Input Shaft
 $4.10
In Stock
 $4.10
A41
Spacer
 $14.22

Part Number:750-0258

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: (Used W/46\\\\
 $14.22
Usually ships in 7 - 12 business days
 $14.22
A42
Washer-fl
 $8.45

Part Number:736-0315

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $8.45
Usually ships in 7 - 12 business days
 $8.45
A42
Washer:flat
 $8.45

Part Number:736-04192

In Stock

In Stock
 $8.45
In Stock
 $8.45
A43
Washer-bell .337 X
Minimum Quantity of 2 Required
 $4.32

Part Number:736-0242

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Not Used in This Application
 $4.32
Usually ships in 7 - 12 business days
 $4.32
A44
Bumper
 $54.84

Part Number:749-04193-0637

In Stock

In Stock
 $54.84
In Stock
 $54.84
A45
Push Cap
 $8.55

Part Number:726-0201

In Stock

In Stock

Note: (Not Used on This Model)
 $8.55
In Stock
 $8.55
A46
Pin-klik
 $6.53

Part Number:714-0143A

In Stock

In Stock

Note: Model No.(S) E633e, E6b3h
 $6.53
In Stock
 $6.53
A47
Wheel:compl:10.0 Obsolete - Not Available
 $131.96

Part Number:734-04188

Discontinued

Discontinued
 $131.96
Discontinued
A48
Wheel:compl:13 X 5
 $215.36

Part Number:934-04232

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $215.36
Usually ships in 7 - 12 business days
 $215.36
A48
Rim Only (6.0 X 3.25) Obsolete - Not Available
 $2.99

Part Number:634-04218

Discontinued

Discontinued
 $2.99
Discontinued
A48
Valve-tubeless Air
Minimum Quantity of 2 Required
 $4.41

Part Number:934-0255

In Stock

In Stock

Note: Model No.(S) E633e, E6b3h
 $4.41
In Stock
 $4.41
A99
Screw-hex Special
Minimum Quantity of 2 Required
 $4.44

Part Number:710-0888

In Stock

In Stock

Note: (Special)
 $4.44
In Stock
 $4.44
Page B
Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Page B Diagram
 Fig #
B1
Ring-retaining
Minimum Quantity of 2 Required
 $4.43

Part Number:716-04102

In Stock

In Stock
 $4.43
In Stock
 $4.43
B2
Bearing-roller-3/4
 $59.50

Part Number:941-0107

In Stock

In Stock

Note: (Service Only)
 $59.50
In Stock
 $59.50
B3
Washer-flat .765 X
 $5.50

Part Number:736-04304

In Stock

In Stock
 $5.50
In Stock
 $5.50
B4
Shaft-drive
 $212.83

Part Number:911-04110

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Use As Required To Obtain Between .005" And .015" Allowable End-Play.
 $212.83
Usually ships in 7 - 12 business days
 $212.83
B5
Washer-flat 1.50 X
Minimum Quantity of 2 Required
 $4.43

Part Number:736-04308

In Stock

In Stock

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.
 $4.43
In Stock
 $4.43
B5
Washer-flat 1.50 X
Minimum Quantity of 2 Required
 $5.48

Part Number:736-04307

In Stock

In Stock

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.
 $5.48
In Stock
 $5.48
B5
Washer-flat 1.50 X
Minimum Quantity of 2 Required
 $4.43

Part Number:736-04306

In Stock

In Stock

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.
 $4.43
In Stock
 $4.43
B5
Washer-flat 1.50 X
Minimum Quantity of 2 Required
 $4.05

Part Number:736-04305

In Stock

In Stock

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 2 #1224-1, Two 2 1224-2 And One 1 #1224-4
 $4.05
In Stock
 $4.05
B5
Shim Set
 $19.40

Part Number:GW-1325C

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $19.40
Usually ships in 7 - 12 business days
 $19.40
Page C
Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Page C Diagram
 Fig #
C1
Shield Asm-tine Br
 $111.48

Part Number:686-04076A-0638

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $111.48
Usually ships in 7 - 12 business days
 $111.48
C2
Screw-hex 5/16-18
 $5.83

Part Number:710-0395

In Stock

In Stock

Note: Purchase Locally
 $5.83
In Stock
 $5.83
C3
Screw-hex 1/4-20 X
 $4.21

Part Number:710-0597

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num
 $4.21
Usually ships in 7 - 12 business days
 $4.21
C4
Screw-hex Wash Sf
Minimum Quantity of 2 Required
 $4.44

Part Number:710-0599

In Stock

In Stock

Note: Not Used on Units With Electric P.T.O.
 $4.44
In Stock
 $4.44
C5
Screw-hex 5/16-18
 $8.55

Part Number:710-0874

In Stock

In Stock

Note: If Equipped
 $8.55
In Stock
 $8.55
C6
Hex Bolt 5/16-18 X .75
Minimum Quantity of 2 Required
 $4.33

Part Number:710-3008

In Stock

In Stock

Note: Models With Electric Pto Only
 $4.33
In Stock
 $4.33
C7
Nut-flglk 5/16-18
Minimum Quantity of 2 Required
 $4.10

Part Number:712-04063

In Stock

In Stock

Note: Use With 618-04378a Transmission, Double "D" Input Shaft
 $4.10
In Stock
 $4.10
C8
Nut-flglk
Minimum Quantity of 2 Required
 $4.19

Part Number:712-04064

In Stock

In Stock

Note: Models Without Clutch Lock
 $4.19
In Stock
 $4.19
C9
Pin-spring Spir 1/
 $6.22

Part Number:715-0108

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $6.22
Usually ships in 7 - 12 business days
 $6.22
C10
Spring:torsion
Minimum Quantity of 2 Required
 $5.48

Part Number:732-04320

In Stock

In Stock
 $5.48
In Stock
 $5.48
C11
Fl-wash. .34
 $6.03

Part Number:736-0275

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $6.03
Usually ships in 7 - 12 business days
 $6.03
C12
Spacer:split Obsolete - Not Available
 $13.43

Part Number:750-04149

Discontinued

Discontinued
 $13.43
Discontinued
C13
Bushing Obsolete - Not Available
 $3.99

Part Number:GW-55088

Discontinued

Discontinued
 $3.99
Discontinued
C14
Spacer:split
 $8.55

Part Number:750-04556

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $8.55
Usually ships in 7 - 12 business days
 $8.55
C15
Arm:rev:stop
 $25.91

Part Number:786-04092

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: *Choose Color When Ordering*
 $25.91
Usually ships in 7 - 12 business days
 $25.91
C16
Bracket:supt
 $26.75

Part Number:786-04098

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $26.75
Usually ships in 7 - 12 business days
 $26.75
C17
Bar:depth Drag
 $33.68

Part Number:786-04104

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: *Choose Color When Ordering*
 $33.68
Usually ships in 7 - 12 business days
 $33.68
C18
Bracket-hood Stop Obsolete - Not Available
 $19.03

Part Number:786-04191-0637

Discontinued

Discontinued
 $19.03
Discontinued
C19
Bracket:hood Lh Obsolete - Not Available
 $23.34

Part Number:786-04290

Discontinued

Discontinued
 $23.34
Discontinued
C20
Bracket:hood Rh Obsolete - Not Available
 $23.34

Part Number:786-04291

Discontinued

Discontinued
 $23.34
Discontinued
C22
Hex Bolt 1/4-20 X 1.25 Lg.
Minimum Quantity of 2 Required
 $3.99

Part Number:710-0106

In Stock

In Stock
 $3.99
In Stock
 $3.99
C23
Screw-solt.h.10-24 Obsolete - Not Available
 $4.99

Part Number:710-04163

Discontinued

Discontinued
 $4.99
Discontinued
C24
Hex L-nut 5/16-18 Thd.
 $6.03

Part Number:712-3009

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $6.03
Usually ships in 7 - 12 business days
 $6.03
C25
Hex Nut #10-24 Thd.
Minimum Quantity of 2 Required
 $3.99

Part Number:712-0121

In Stock

In Stock
 $3.99
In Stock
 $3.99
C26
Use 912-0291
 $5.60

Part Number:712-0291

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: (Optional)
 $5.60
Usually ships in 7 - 12 business days
 $5.60
C27
Spring-fwrd Clutch
 $8.84

Part Number:732-04185

In Stock

In Stock
 $8.84
In Stock
 $8.84
C28
Cable:drive:tuffy
 $40.94

Part Number:946-04208

In Stock

In Stock
 $40.94
In Stock
 $40.94
C29
Cable:reverse Cont
 $64.68

Part Number:946-04058

In Stock

In Stock
 $64.68
In Stock
 $64.68
C30
Bail-forward Clutc
 $64.50

Part Number:1916106001

Backorder: No ETA

Backorder: No ETA
 $64.50
Backorder: No ETA
 $64.50
C31
Handle: Upper: Til Obsolete - Not Available
 $109.63

Part Number:749-04084-0638

Discontinued

Discontinued
 $109.63
Discontinued
C32
Handle-lower Tille
 $56.12

Part Number:749-04742-0638

In Stock

In Stock
 $56.12
In Stock
 $56.12
C33
Tab: Conduit Mount Obsolete - Not Available
 $3.99

Part Number:786-04106

Discontinued

Discontinued
 $3.99
Discontinued
C34
Bracket-rev Cable Obsolete - Not Available
 $11.66

Part Number:786-04040

Discontinued

Discontinued
 $11.66
Discontinued
C35
Bracket-handle Supt
 $21.97

Part Number:786-04188-0638

In Stock

In Stock
 $21.97
In Stock
 $21.97
C36
Panel-handle
 $28.51

Part Number:786-04200-0638

In Stock

In Stock
 $28.51
In Stock
 $28.51
C37
Screw-hex 3/8-16 X
Minimum Quantity of 2 Required
 $4.53

Part Number:710-0216

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num
 $4.53
Usually ships in 7 - 12 business days
 $4.53
C38
Belt-v 3l X
 $26.85

Part Number:954-04032B

In Stock

In Stock
 $26.85
In Stock
 $26.85
C39
Nut, Hexlck, 3/8-16, Cntrlck
 $4.49

Part Number:712-3000

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $4.49
Usually ships in 7 - 12 business days
 $4.49
C40
Washer-lock 5/16
Minimum Quantity of 2 Required
 $4.95

Part Number:936-0119

In Stock

In Stock

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
 $4.95
In Stock
 $4.95
C41
Tie-cable 7
Minimum Quantity of 2 Required
 $3.99

Part Number:725-0157

In Stock

In Stock

Note: (W/ Heated Grips)
 $3.99
In Stock
 $3.99
C42
Washer-fl
 $4.49

Part Number:736-3050

In Stock

In Stock
 $4.49
In Stock
 $4.49
C43
Nut-flange Lk.nylo
Minimum Quantity of 2 Required
 $4.24

Part Number:712-04065

In Stock

In Stock

Note: (Not Shown)
 $4.24
In Stock
 $4.24
C44
Screw-hex 3/8-16 X
Minimum Quantity of 2 Required
 $5.06

Part Number:710-0347

In Stock

In Stock

Note: Purchase Locally
 $5.06
In Stock
 $5.06
C45
Screw-hex 3/8-16 X
Minimum Quantity of 2 Required
 $4.36

Part Number:710-0514

In Stock

In Stock

Note: (Optional)
 $4.36
In Stock
 $4.36
C46
Screw-hhflg 5/16-
Minimum Quantity of 2 Required
 $4.82

Part Number:710-04048

In Stock

In Stock

Note: See Tine Chart
 $4.82
In Stock
 $4.82
C47
Tine-bolo 10 Rh
 $21.10

Part Number:742-04226-0637

In Stock

In Stock

Note: See Tine Chart
 $21.10
In Stock
 $21.10
C48
Tine-bolo 10 Lh
 $20.88

Part Number:742-04227-0637

In Stock

In Stock
 $20.88
In Stock
 $20.88
C49
Holder Asm:tine:tu
 $55.08

Part Number:686-04066

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $55.08
Usually ships in 7 - 12 business days
 $55.08
C49
Tine Holder
 $51.98

Part Number:686-05008-0637

In Stock

In Stock

Note: Incl. Eight Right-Hand Tines, Eight Left-Hand Tines And Required Hardware.
 $51.98
In Stock
 $51.98
C
Tines-bolo Set Of Obsolete - Not Available
 $249.62

Part Number:GW-1901

Discontinued

Discontinued

Note: Tecumseh Engine
 $249.62
Discontinued
Page D
Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Page D Diagram
 Fig #
D
Resistor Spark Plug
Minimum Quantity of 2 Required
 $4.99

Part Number:34645

In Stock

In Stock

Note: Model 645A Honda Only
 $4.99
In Stock
 $4.99
D
Splg:1st Fire:rp C Obsolete - Not Available
 $4.99

Part Number:FF-22

Discontinued

Discontinued

Note: Tecumseh Engine
 $4.99
Discontinued
D
Pre Filter
 $6.55

Part Number:36634

In Stock

In Stock

Note: Tecumseh Engine
 $6.55
In Stock
 $6.55
D
Air Filter
 $10.00

Part Number:30-740

In Stock

In Stock

Note: Model 645A Honda Only
 $10.00
In Stock
 $10.00
D
Air Cleaner Element
 $6.11

Part Number:17211-ZL8-023

In Stock

In Stock

Note: Honda Engine
 $6.11
In Stock
 $6.11
D
Belt-v Fwd Drv 4
 $21.43

Part Number:954-04090

In Stock

In Stock

Note: Length: 12 inches Width: 1/2 inch - Model 643B & 645A Only
 $21.43
In Stock
 $21.43
D
Belt-v Rev Drv 3
 $20.31

Part Number:954-04091

In Stock

In Stock

Note: (Reverse)(Closer to the Engine, V-Side Out)
 $20.31
In Stock
 $20.31
D
Pulley-idler
 $44.53

Part Number:756-04170

In Stock

In Stock
 $44.53
In Stock
 $44.53
D
Cable:drive:tuffy
 $40.94

Part Number:946-04208

In Stock

In Stock

Note: Model 643B & 645A Only
 $40.94
In Stock
 $40.94
D
Cable:reverse Cont
 $64.68

Part Number:946-04058

In Stock

In Stock

Note: See Tine Chart
 $64.68
In Stock
 $64.68
D
Tine-bolo 10 Lh
 $20.88

Part Number:742-04227-0637

In Stock

In Stock

Note: See Tine Chart
 $20.88
In Stock
 $20.88
D
Tine-bolo 10 Rh
 $21.10

Part Number:742-04226-0637

In Stock

In Stock

Note: Incl. All Hardware
 $21.10
In Stock
 $21.10
D
Tines-bolo Set Of Obsolete - Not Available
 $249.62

Part Number:GW-1901

Discontinued

Discontinued

Note: Model 643C Only
 $249.62
Discontinued
D
Holder Asm:tine:tu
 $55.08

Part Number:686-04066

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Model 643B & 645A Only
 $55.08
Usually ships in 7 - 12 business days
 $55.08
D
Tine Holder
 $51.98

Part Number:686-05008-0637

In Stock

In Stock

Note: Model 643C Only
 $51.98
In Stock
 $51.98
D
Wheel:compl:10.0 Obsolete - Not Available
 $131.96

Part Number:734-04188

Discontinued

Discontinued

Note: Model 643B & 645A Only
 $131.96
Discontinued
D
Wheel:compl:13 X 5
 $215.36

Part Number:934-04232

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $215.36
Usually ships in 7 - 12 business days
 $215.36
Page E
Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Page E Diagram
 Fig #
E
Tine-bolo 10 Rh
 $21.10

Part Number:742-04226-0637

In Stock

In Stock
 $21.10
In Stock
 $21.10
E
Tine-bolo 10 Lh
 $20.88

Part Number:742-04227-0637

In Stock

In Stock
 $20.88
In Stock
 $20.88
E
Tine-bolo 12 Rh
 $33.81

Part Number:742-04224-0637

In Stock

In Stock
 $33.81
In Stock
 $33.81
E
Tine-bolo 12 Lh
 $33.79

Part Number:742-04223-0637

In Stock

In Stock
 $33.79
In Stock
 $33.79
E
Kit-tine Cast Iron Obsolete - Not Available
 $297.53

Part Number:1901118A

Discontinued

Discontinued
 $297.53
Discontinued
E
Tines-bolo Set Of Obsolete - Not Available
 $249.62

Part Number:GW-1901

Discontinued

Discontinued
 $249.62
Discontinued
Page F
Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Page F Diagram
 Fig #
F1
Plug-pipe 3/8 Npt
 $8.55

Part Number:737-04202

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $8.55
Usually ships in 7 - 12 business days
 $8.55
F2
Screw-hex Flange 5
 $5.86

Part Number:710-04049

In Stock

In Stock
 $5.86
In Stock
 $5.86
F3
Washer-lock 5/16
Minimum Quantity of 2 Required
 $4.95

Part Number:936-0119

In Stock

In Stock

Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
 $4.95
In Stock
 $4.95
F4
Cover-trans Rear 1 Obsolete - Not Available
 $10.46

Part Number:1916109001

Discontinued

Discontinued
 $10.46
Discontinued
F5
Cover-trans Housin
 $31.10

Part Number:786-04359

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $31.10
Usually ships in 7 - 12 business days
 $31.10
F6
Gasket-gear Housin
 $8.47

Part Number:921-04229

In Stock

In Stock
 $8.47
In Stock
 $8.47
F7
Seal-oil
 $13.05

Part Number:921-04030

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $13.05
Usually ships in 7 - 12 business days
 $13.05
F8
Seal-oil
 $11.04

Part Number:921-04031

In Stock

In Stock
 $11.04
In Stock
 $11.04
F9
Housing-transmissi Obsolete - Not Available
 $216.07

Part Number:919-04013

Discontinued

Discontinued
 $216.07
Discontinued
F10
Seal-oil
 $19.98

Part Number:921-04036

In Stock

In Stock

Note: Tine Shaft Seal (Not Shown) - Washers With Transmission When Purchased As An Assembly Only. Remove And Discard When Installing The Transmission On Tiller.
 $19.98
In Stock
 $19.98
F11
Flat Washer, .344 X .750 X .12
 $7.19

Part Number:936-3008

In Stock

In Stock

Note: If Equipped With Carb Fuel Tank
 $7.19
In Stock
 $7.19
F12
Cover-bearing
 $28.72

Part Number:918-04435

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $28.72
Usually ships in 7 - 12 business days
 $28.72
F13
Screw-hhflg 5/16-
Minimum Quantity of 2 Required
 $4.82

Part Number:710-04048

In Stock

In Stock
 $4.82
In Stock
 $4.82
F14
Hex Bolt 5/16-18 X .75
Minimum Quantity of 2 Required
 $4.33

Part Number:710-3008

In Stock

In Stock

Note: Models With Electric Pto Only
 $4.33
In Stock
 $4.33
Page G
Troy-Bilt 21A-643B766 (2006) Bronco RotoTiller Page G Diagram
 Fig #
G2
Ring-retaining Ext
Minimum Quantity of 2 Required
 $4.43

Part Number:716-04104

In Stock

In Stock

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play.
 $4.43
In Stock
 $4.43
G3
Washer-flat 1.015
Minimum Quantity of 2 Required
 $4.43

Part Number:736-04309

In Stock

In Stock

Note: (33 - Use As Required To Obtain Between .005" And .030" Allowable End-Play.
 $4.43
In Stock
 $4.43
G3
Washer-flat:1.015
 $8.45

Part Number:736-04260

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play.
 $8.45
Usually ships in 7 - 12 business days
 $8.45
G3
Washer-flat:1.015
 $8.45

Part Number:736-04259

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play.
 $8.45
Usually ships in 7 - 12 business days
 $8.45
G3
Washer-flat:1.015
Minimum Quantity of 2 Required
 $4.97

Part Number:736-04258

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days

Note: Use As Required To Obtain Between .005" And .030" Allowable End-Play.
 $4.97
Usually ships in 7 - 12 business days
 $4.97
G3
Washer-flat:1.015
 $4.97

Part Number:736-04257

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $4.97
Usually ships in 7 - 12 business days
 $4.97
G4
Bushing-1.005 X 1.
 $17.57

Part Number:941-04300

In Stock

In Stock
 $17.57
In Stock
 $17.57
G5
Shaft:wheel:tuffy Obsolete - Not Available
 $45.95

Part Number:911-04512

Discontinued

Discontinued
 $45.95
Discontinued
G5
Shaft:wheel:bronco Obsolete - Not Available
 $74.31

Part Number:911-04486

Discontinued

Discontinued
 $74.31
Discontinued
G6
Key-hi Pro .25 X 1
 $8.45

Part Number:714-04059

In Stock

In Stock
 $8.45
In Stock
 $8.45
G7
Washer-flat 1.015
Minimum Quantity of 2 Required
 $4.55

Part Number:736-04310

In Stock

In Stock
 $4.55
In Stock
 $4.55
G8
Gear-worm 61t
 $168.91

Part Number:917-04380

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $168.91
Usually ships in 7 - 12 business days
 $168.91
G9
Shaft-tiller Tine
 $143.59

Part Number:911-04078

In Stock

In Stock
 $143.59
In Stock
 $143.59
G10
Key Woodruff .25 X
 $11.86

Part Number:GW-1104

In Stock

In Stock
 $11.86
In Stock
 $11.86
G11
Gear-worm 30t Lh
 $182.22

Part Number:917-04381

Usually ships in 7 - 12 business days

Usually ships in 7 - 12 business days
 $182.22
Usually ships in 7 - 12 business days
 $182.22
 Fig #
Cultivator Parts

Repair Guides for Troy-Bilt Bronco RotoTillers 21A-643B766 (2006)

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This article lists the major categories of lawn and garden tools and machines, explaining the basic applications, types, and features of each.

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This video will help you replace the spark plug on a small engine which will help get your gas powered equipment up and running again.

How to Replace the Fuel Filters in Your Outdoor Power Equipment

This video will help you troubleshoot your fuel-line replacement repairs.

How to Winterize Power Tools and Machines

This video explains how to properly winterize power tools and machines for winter storage, increasing the life and performance of seasonal tools.

Questions & Answers for Troy-Bilt 21A-643B766 (2006)

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