CH20-64500 Page 1 of 30
Air Intake - Pg. 51
Ref # Part Number Qty Description
1 24 164 14-S Manifold, intake1
2 M-0639055 Screw, hex. flange M6x1.0x554
3 24 041 01-S Gasket, intake manifold2
4 24 041 06-S Gasket, air cleaner base1
5 24 094 03-S Base, air cleaner1
6 24 126 23-S Bracket, air cleaner (20 mm stud) Use before Serial No.
1
2422900017
7 M-0639016 Screw, hex. flange M6x1.0x163
8 47 083 03-S Element, air cleaner1
9 24 083 02-S Element, precleaner1
10 24 096 01-S Cover, inner air cleaner1
11 24 032 03-S Seal, inner - air cleaner1
12 12 100 01-S Nut, wing1
CH20-64500 Page 2 of 30
Air Intake - Pg. 51
13 24 380 03-S Pin, latch lever Use before Serial No. 24229000172
14 24 344 01-S Latch, lever Use before Serial No. 24229000172
15 24 089 04 Spring, latch Use before Serial No. 24229000172
16 24 096 03 Cover, air cleaner Use before Serial No. 2422900017, for
1
reference only, no longer available separately. Replaced by
24-743-05.
18 24 109 03 Cup, fuel spitback 27.5 mm stud CV18-251
19 24 126 21-S Bracket, air cleaner 30 mm stud CH18-221
20 24 743 05-S Kit, air cleaner cover Includes 18,19,21-23. Use before
1
Serial No. 2422900017; after Serial No. 2422900007, or after
installation of kit, individual kit components may be ordered
for replacement
21 24 096 24-S Cover, air cleaner1
22 24 755 91 Kit, air cleaner knob w/gasket Includes 231
23 25 341 02 Knob, air cleaner cover1
CH20-64500 Page 3 of 30
Blower Housing & Baffles - Pg. 32
Blower Housing & Baffles - Pg. 32
Ref # Part Number Qty Description
1 24 027 20-S Housing, blower Includes 2-41
2 24 100 01-S Nut, plastic3
3 24 100 02-S Nut, plastic2
4 25 139 16-S Plug, button 9/16"1
5 M-0545016 Screw, hex. flange M5x0.8x165
6 M-0545020 Screw, hex. flange M5x0.8x202
7 M-0551016 Screw, hex. flange M5x0.8x161
8 24 146 02 Plate, backing - #2 side1
9 M-0645016 Screw, hex. flange M6x1.0x166
10 24 063 20-S Baffle, cylinder barrel - #2 side1
11 24 063 17-S Baffle, valley - #2 side1
12 24 063 24-S Baffle, valley - #1 side1
13 M-0545010 Screw, hex. flange M5x0.8x102
14 24 063 21 Baffle, cylinder barrel - #1 side Replaced by 24-063-301
15 24 146 08 Plate, backing - #1 side1
CH20-64500 Page 4 of 30
CH20-64500 Page 5 of 30
Crankcase
Ref # Part Number Qty Description
1 Crankcase (Service with Short Block or Miniblock. Refer to
1
Selection Guide TP-2470)
3 12 380 03 Pin, dowel locating6
4 52 139 09-S Plug, cup1
5 24 032 01-S Seal, oil front1
6 24 144 01-S Shaft, governor cross1
7 X-25-102-S Washer, plain 1/4"1
8 12 032 01-S Seal, governor cross shaft1
9 X-25-63-S Washer, plain 1/4"1
10 12 380 04-S Pin, hitch1
13 24 067 01 Connecting Rod (Std.) Replaced by 24-067-052
13 24 067 02 Connecting Rod (.25) To be replaced by 24-067-062
14 24 874 01-S Piston w/Ring Set (Std.) Includes 15,162
CH20-64500 Page 6 of 30
Crankcase
14 24 874 02-S Piston w/Ring Set (.25) Includes 15,162
14 24 874 03-S Piston w/Ring Set (.50) Includes 15,162
15 24 018 01-S Retainer, piston pin4
16 24 108 01-S Ring Set (Std.)2
16 24 108 02-S Ring Set (.25)2
16 24 108 03-S Ring Set (.50)2
17 12 422 07-S Shim, camshaft (A.R.) (white) (.02725 - .02875)1
17 12 422 08-S Shim, camshaft (A.R.) (blue) (.02925 - .03075)1
17 12 422 09-S Shim, camshaft (A.R.) (red) (.03125 - .03275)1
17 12 422 10-S Shim, camshaft (yellow) (.03325 - .03475)1
17 12 422 11-S Shim, camshaft (A.R.) (green) (.03525 - .03675)1
17 12 422 12-S Shim, camshaft (A.R.) (gray) (.03725 - .03875)1
17 12 422 13-S Shim, camshaft (A.R.) (black) (.03925 - .04075)1
18 24 012 05 Camshaft1
28 52 139 02-S Plug, hex. hd. 3/8" N.P.T.F.2
CH20-64500 Page 7 of 30
Crankshaft
Ref # Part Number Qty Description
1 24 014 04-S Crankshaft Includes 21
2 52 139 09-S Plug, cup Use on engines with New Design - 16.88 mm,
1
5/8" diameter
2 12 139 01-S Plug, cup Use on engine with Original Design - 11.40 mm,
1
7/16" diameter
CH20-64500 Page 8 of 30
Crankshaft
CH20-64500 Page 9 of 30
Engine Controls - Pg. 47