Detailed instructions for use are in the User's Guide.
[. . . ] 1 1 1 Cup, fuel spitback 27. 5 mm stud CV18-25 Bracket, air cleaner 30 mm stud CH18-22 Kit, air cleaner cover Includes 18, 19, 21-23. 2422900007, or after installation of kit, individual kit components may be ordered for replacement Cover, air cleaner Kit, air cleaner knob w/gasket Includes 23 Knob, air cleaner cover
18 19 20
24 109 03 24 126 21-S 24 743 05-S
21 22 23
24 096 24-S 24 755 91 25 341 02
1 1 1
CH20-64500 Page 3 of 30 Blower Housing & Baffles - Pg. 32
Ref # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Part Number 24 027 20-S 24 100 01-S 24 100 02-S 25 139 16-S M-0545016 M-0545020 M-0551016 24 146 02 M-0645016 24 063 20-S 24 063 17-S 24 063 24-S M-0545010 24 063 21 24 146 08
Qty Description 1 Housing, blower Includes 2-4 3 Nut, plastic 2 Nut, plastic 1 Plug, button 9/16" 5 Screw, hex. [. . . ] 41
Ref # 1 2 3 5 6 7 8 11 12 13 14 14 15 16 17 17 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
Part Number 25 353 10-S X-426-9-S 25 050 03-S 24 353 02-S 24 086 12-S 24 393 04 24 100 01-S 47 154 01-S M-0650012 M-0651030 24 853 02 24 853 32-S 24 041 06-S 24 041 17-S 24 053 02 24 053 32 24 086 09-S 24 041 09-S 24 153 02-S 24 337 01-S 24 757 02-S 24 462 01-S 24 154 01-S 24 757 07-S 24 173 02-S 24 089 10-S 24 086 10-S 24 153 03-S 24 337 02-S 24 089 11-S 24 368 01-S 24 757 01-S 24 153 06-S 24 521 01-S 24 153 05-S 24 153 04-S 24 435 01-S 24 086 07-S
Description Line, fuel 9" Clamp, hose Filter, fuel Replaced by 24-050-02 Line, fuel 15-1/2" Screw, hex. flange M6x1. 0x30 Kit, carburetor Includes 15-17, carburetor assembly 24-053-02 CH20-64500 Page 14 of 30 1 Kit, carburetor Includes 15-17, carburetor assembly Fuel System - Pg. 41 24-053-32 1 1 1 1 4 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 Gasket, air cleaner Gasket, carburetor Carburetor assembly Includes 20-41, carburetor repair kit 24-757-03, high altitude kits 24-755-01 & 24-755-02 Carburetor assembly Includes 20-41, carburetor repair kit 24-757-03, high altitude kits 24-755-01 & 24-755-02 Screw, sems pan hd. M4x0. 7x16 Gasket, carburetor body O-Ring, slow jet Jet, slow Kit, float repair Valve, inlet needle Clip, inlet needle valve Kit, choke repair Includes 28 Cap, choke lever Spring, idle speed adjusting Screw, idle speed adjusting O-Ring, main jet screw Screw, main jet Spring, idle adjusting Needle, idle adjusting Kit, solenoid assembly Includes 36-41 O-Ring, solenoid Seat, solenoid O-Ring, solenoid O-Ring, solenoid Solenoid Screw, sems pan hd. M4x0. 7x8
Qty 2 6 1 1 2 1 2 1 1 2 1
CH20-64500 Gasket Set
Page 15 of 30
Ref #
Part Number 24 755 107-S 24 050 01-S 24 041 06-S 24 041 14-S 24 041 23-S 24 041 15-S 24 041 17-S 24 041 53-S 24 041 08-S 24 041 02-S 24 041 13-S 24 041 01-S 24 041 29-S 24 100 10-S 24 153 01-S 24 153 08-S 12 153 01-S 25 153 02-S 12 153 02-S 24 153 21-S 24 153 27-S 24 153 23-S 24 018 09-S 12 086 16-S 24 032 04-S 230046-S 24 032 01-S 12 032 01-S 24 032 03-S 52 032 08-S 66 032 05-S 24 072 09-S 24 468 16-S
Qty Description 1 Gasket Set 1 Filter, breather 1 Gasket, air cleaner base 1 Gasket, air cleaner base 1 Gasket, breather 1 Gasket, carburetor 1 Gasket, carburetor 1 Gasket, carburetor - plastic intake manifold 2 Gasket, cylinder head 2 Gasket, exhaust 1 Gasket, fuel spitback cup 2 Gasket, intake manifold CH20-64500 Pageoil filter adapter 1 Gasket, 16 of 30 Gasket Set Nut, hex. 2 O-Ring, plastic intake manifold 2 O-Ring, valve cover 1 Retainer, ring 8 Screw, hex. flange M10x1. 5x90 1 Seal 2 1/4" long 1 Seal, breather 1 Seal, front oil 1 Seal, governor cross shaft 1 Seal, inner air cleaner - 1/4" long 1 Seal, rear oil 2 Seal, valve stem 8 Stud, cylinder head, M8x1. 25x20, M10x1. 5x33, 105 mm long 8 Washer, flat 8 mm
CH20-64500 Page 17 of 30 Head/Valve/Breather - Style "A"
Ref # 1 2 3 4 7 8 9 10 11
Part Number 24 755 75-S 24 153 12 24 153 09-S 24 086 32-S 25 755 13-S 12 153 03-S 24 445 01-S M-0640034 24 755 61
Qty 1 2 1 8 1 1 1 4 1
Description Kit, valve cover - oil fill Includes 2-5 O-Ring O-Ring Screw, hex. cap - shoulder M6x1. 0x23 Kit, oil fill cap Includes 8 O-Ring Strap, lifting Screw, hex. Replaced by 24-755-66
12 13 14 15 16 17 17 18 19 20 21 22 23 24 24 25 26 27 28 29 30 31 32 33 34 35 37 38 39 40
24 146 09 M-0631005 24 186 03 24 194 02 12 086 16-S 24 016 01-S 24 016 02-S 24 318 09-S 235011-S 24 089 02-S 12 173 01-S 12 755 03-S 24 032 05-S 24 017 01-S 24 017 02-S 24 755 74-S 24 402 03-S 12 018 01-S M-0545010 24 050 01-S 24 033 01-S X-75-23-S 24 041 23-S X-426-9-S 24 326 06 M-0645020 24 318 10-S 24 041 08-S 24 411 04 12 351 01
1 Plate, guide Use CH20-64500 Page 18 of 30 before Serial No. Replaced by 24-755-66 Head/Valve/Breather - Style "A" 1 Washer, plain 6 mm Use before Serial No. Replaced by 24-755-66 8 2 2 1 4 4 4 4 2 2 2 1 1 1 1 1 1 1 1 1 1 4 1 2 4 4 Screw, hex. flange M10x1. 5x91 Valve, exhaust (Std. ) Valve, exhaust (. 25 O. S. ) Head assembly, #1 cylinder Retainer, spring Spring, valve Cap, valve spring Kit, retainer Seal, valve stem Valve, intake (Std. ) Valve, intake (. 25 O. S. ) Kit, valve cover - plain Includes 2, 4, 5 Reed, breather Retainer, breather reed Screw, hex. flange M5x0. 8x10 Filter, breather Kit, breather w/plug Includes 31, 32 Plug, allen hd. flange M6x1. 0x20 Head assembly, #2 cylinder Gasket, cylinder head Rod, push Use after Serial No. Replaced by 24-755-66 Lifter, valve
CH20-64500 Page 19 of 30 Head/Valve/Breather - Style "B"
Ref # 1 2 3 4 7 8 9 10 37 38 40 42
Part Number 24 755 75-S 24 153 12 24 153 09-S 24 086 32-S 25 755 13-S 12 153 03-S 24 445 01-S M-0640034 24 318 10-S 24 041 08-S 12 351 01 24 755 66-S
Qty Description 1 Kit, valve cover - oil fill Includes 2-5 2 O-Ring 1 O-Ring 8 Screw, hex. cap - shoulder M6x1. 0x23 1 Kit, oil fill cap Includes 8 1 O-Ring 1 Strap, lifting 4 Screw, hex. [. . . ] 2309800017
2 Bolt, thru M5x0. 8x99 1 Cap, commutator end 1 Insulator 4 Spring, brush 1 Holder, brush 1 Kit, brush Includes 19 1 Frame 1 Nut, starter CH20-64500 Page 28 of 30 1 System - Pg. 37 Solenoid Starting 1 Armature 1 Pinion, drive 2 Nut, stop collar 1 Ring, retainer 1 Washer, thrust 1 Lever, starter drive 1 Cap, drive end 2 Nut, starter
CH20-64500 Page 29 of 30 Starting System - Pg. 38
Ref # 13 14 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
Part Number M-0841080 M-0839080 24 098 01-S 52 211 05-S 24 301 01-S 52 168 01-S 52 089 09-S 52 323 03-S 52 221 01-S 12 471 01-S 52 100 09-S 52 435 02-S 12 170 03-S 12 239 01-S 52 100 08 52 141 03 52 468 14 12 090 10-S 24 081 04-S 52 100 10-S 24 098 01-S 82 755 84
Qty 1 2 1
Description Nut, hex. [. . . ]