
For Discount Troy Bilt Parts Call 606-678-9623 or 606-561-4983
21A-64M1011 Bronco CRT Roto-Tiller (2008) Page 1 of 16
Drive System
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For Discount Troy Bilt Parts Call 606-678-9623 or 606-561-4983
21A-64M1011 Bronco CRT Roto-Tiller (2008) Page 2 of 16
Drive System
Ref # Part Number Qty DescriptionS/P/F
1 736-0159 Flat Washer, 5/161 S
2 756-04198 Engine Drive Pulley1 S
3 656-04023A Transmission Pulley Bronco1
3 656-04005A Transmission Pulley Super Bronco1 /P
4 756-04169 Reverse Idler Pulley Super Bronco1 S
5 786-04095 Belts/Pulleys Guard1 S
6 754-04090 Forward Drive Belt1 S
7 754-04091 Reverse Drive Belt Super Bronco1 S
8 731-05268 Belt Cover1 /P
9 732-04289 Reverse Return Spring Super Bronco1 S
10 732-04081 Belt Guide Super Bronco1 /P
11 732-04079 Belt Guide1 S
12 786-04068 Engine Bracket Left1 /P
13 786-04069 Engine Bracket Right1
14 786-04070 Belt Cover Bracket1 S
15 748-04087 Shoulder Washer1 S
16 786-04276 Reverse Idler Arm Super Bronco1 /P
17 786-04275 Forward Idler Lever1 S
18 710-0117 Hex Head Screw, 5/16-24 x 11 S
19 710-0237 Hex Head Screw, 5/16-24 x 5/81 /P
20 710-0376 Hex Head Screw, 5/16-18 x 11 /P
21 710-04049 Hex Head Screw, 5/16-18 x 5/81 /P
22 710-0347 Hex Head Screw, 3/8 -16 x 1-3/4 Bronco1 /P
22 710-0520 Hex Head Screw, 3/8-16 x 1.50 Super
1 /P
Bronco
23 710-0599 Self-Tapping Screw, 1/4-20 x 1/21 /P
24 710-3103 Hex Head Screw, 5/16-18 x 2 Super Bronco1 /P
25 712-3000 Lock Nut, 3/8 -161 S
26 712-3009 Lock Nut, 5/16-18 Super Bronco1 S
27 736-0119 Lock Washer, 5/16 Bronco1 S
28 750-0535 Spacer, .380 ID x .625 OD x .21 Bronco1 S
28 736-3050 Flat Washer, .406 x .812 x .051 Super
29 736-3090 Flat Washer, .260 x .720 x .0601 /P
30 736-0452 Bell Washer, .396 x 1.140 x .0951 S
31 710-0459A Hex Head Screw, 3/8 -24 x 1.501 /P
32 736-04181 Support Washer, .690 x 1.250 x .0751 S
33 732-04085 Forward Return Spring1 /P
34 786-04107 Cable Mounting Bracket1
35 756-04170 Forward Idler Pulley1 /P
36 714-0105 Key, 3/16" x 1"1 S
37 736-3078 Flat Washer, .344 x 1.00 x .0631 /P
38 736-04193 Belleville Washer, .827 x .331 x .0981 /P
39 710-0805 Hex Screw, 5/16-18 x 1.501 /P
40 712-04063 Hex Lock Nut, 5/16-181 /P
41 750-0258 Shlder Spacer, .315 x .750 x .375 Bronco1 /P
42 736-0315 Flat Washer, .75 x 1.5 x .125 Bronco1 /P
42 736-04192 Flat Washer, .786 x 1.000 x .031 Super
1 /P
Bronco
1 /P
Bronco
43 736-0242 Bell Washer, .340 x .872 x .0601 /P
46 714-0143 Klik Pin1 S
47 734-04188 Complete Wheel Ass., 10 x 2.75 Bronco1
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For Discount Troy Bilt Parts Call 606-678-9623 or 606-561-4983
21A-64M1011 Bronco CRT Roto-Tiller (2008) Page 3 of 16
Drive System
Ref # Part Number Qty DescriptionS/P/F
48 634-04232 Complete Whl. Ass., 13 x 5 x 6 Super
48 N/A Rim Assembly1
48 734-0255 Valve1 S
48 734-04163 Tire1 S
49 618-04360A Transmission Assembly Bronco1 S
49 618-04362 Transmission Assembly Super Bronco1 S
50 710-0672 Hex Head Screw, 5/16-24 x 1.251 /P
1 S
Bronco
www.mymowerparts.com

For Discount Troy Bilt Parts Call 606-678-9623 or 606-561-4983
21A-64M1011 Bronco CRT Roto-Tiller (2008) Page 4 of 16
Engine Assembly
www.mymowerparts.com

For Discount Troy Bilt Parts Call 606-678-9623 or 606-561-4983
21A-64M1011 Bronco CRT Roto-Tiller (2008) Page 5 of 16
Engine Assembly
Ref # Part Number Qty DescriptionS/P/F
1 Bolt Furnish Short Block6
2 Oil Filler Plug Furnish Short Block1
3 O-Ring Furnish Short Block1
4 Oil Seal Furnish Short Block1
5 Left Crankcase Cover Furnish Short Block1
6 Radial Ball Bearing Furnish Short Block1
7 Camshaft Assembly Furnish Short Block1
8 Dowel Pin Furnish Short Block1
9 Dowel Pin Furnish Short Block1
10 Case Cover Packing Furnish Short Block1
11 Crankshaft Complete Furnish Short Block1
12 Governor Kit Furnish Short Block1
13 Radial Ball Bearing Furnish Short Block1
14 Lock Pin Furnish Short Block1
15 O-Ring Furnish Short Block1
16 Governor Arm Furnish Short Block1
17 Crankase Complete Furnish Short Block1
20 751-10806 Air Filter Heating Pipe Base1 S
21 Oil Seal Furnish Short Block1
22 751-10792 Ignition Complete1 S
24 751-10818 Air Filter Housing1 S
24 751-10794 Air Filter1 S
25 Carburetor Packing Furnish Short Block1
28 751-10796 Fuel Tank1 S
28 Bolt Furnish Short Block1
29 Nut Furnish Short Block2
34 751-10790 Recoil Starter Assembly1 S
38 751-10649 Fuel Filler Cap Complete1 S
44 751-10654 Governor Spring1 S
47 Head Cover Gasket Furnish Short Block1
51 Rocker Arm Furnish Cylinder Head2
52 Valve Adjusting Nut Furnish Cylinder Head2
53 Pivot Locking Nut Furnish Cylinder Head2
54 Cylinder Head Complete Furnish Cylinder
1
Head
55 Cylinder Head Gasket Furnish Short Block1
56 Dowel Pin Furnish Cylinder Head2
57 751-10657 Stud 8 × 342 S
58 751-10292 Spark Plug1 S
59 Muffler Gasket Furnish Cylinder Head1
61 Carburetor Insulator Packing Furnish Short
62 Carburetor Insulator Furnish Short Block1
64 751-10793 Muffler1 S
65 751-10662 Dipstick Decoration Cover1 S
66 Connecting Rod Assembly Furnish Short
67 Piston Pin Clip Furnish Short Block2
68 Piston Furnish Short Block1
69 Piston First Ring Set Furnish Short Block1
70 Piston Pin Furnish Short Block1
71 751-10648 Push Rod Kit1 S
1
Block
1
Block
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