Kohler M18-24521 User Manual
M18-24521 Page 1 of 40
Air Intake
Ref # Part Number Qty Description
1 X-276-7-S Wing nut 1/4-202
2 52 082 02-S Cover, air cleaner - square1
3 52 032 01-S Seal, air cleaner cover1
4 231032-S Seal, element cover2
5 52 082 03-S Cover, air cleaner element1
6 52 083 01-S1 Precleaner1
7 47 083 01-S1 Element, air cleaner1
8 X-67-83-S Screw, hex. wash. hd. 1/4-20x7/16"1
9 52 201 07-S Base, air cleaner1
11 25 041 06-S Gasket, air cleaner elbow1
12 52 754 03-S Kit, air intake elbow Includes 11,311
13 X-22-9-S Washer, I.T. #102
14 X-50-57-S Screw, sltd. pan hd. 10-32x1-1/2"2
15 X-50-37-S Screw, sltd. pan hd. 10-32x2-1/4"1
M18-24521 Page 2 of 40
Air Intake
16 X-25-79-S Washer, plain #101
17 52 055 04-S Gasket, air cleaner1
18 X-352-38-S Stud 1/4-20x4-3/4"1
31 X-67-62-S Screw, hex. wash. hd. 1/4-20x3/4"1
25 113 07-S Decal, air cleaner NOT ILLUSTRATED1
M18-24521 Page 3 of 40
Baffles & Shroud
Ref # Part Number Qty Description
7 52 124 23-S Baffle, #1 cylinder head (6-1/8" wide with 3" wide rear
10 X-67-83-S Screw, hex. wash. hd. 1/4-20x7/16"20
11 52 063 21-S Baffle, #2 cylinder head (8-3/4" wide with 2-59/64" wide rear
12 52 063 01-S Baffle, fuel pump1
13 52 086 11-S Screw, hex. wash. hd. 1/4-20x5/8"2
14 52 468 16-S Washer, flat2
22 52 217 01-S Bracket, upper housing1
27 52 755 70-S Kit, blower housing Includes 10 [qty. 3],13 [qty. 2],14 [qty.
1
cylinder baffle)
1
cylinder baffle)
1
2],22
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Baffles & Shroud
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Breather & Vent
Ref # Part Number Qty Description
1 52 326 06-S Hose, breather 3-5/8"1
2 X-81-1-S Nut, hex. 1/4-202
3 X-25-12-S Washer, plain 1/4"2
4 52 096 08-S Cover, #1 upper cylinder valve1
5 52 055 01-S Gasket, valve cover3
6 231419-S Filter, breather1
7 52 032 04-S Seal, breather1
8 52 462 01 Valve, umbrella1
9 52 096 22 Cover, #1 lower cylinder valve1
10 275220-S Stud, #1 cylinder valve cover - 1/4-20x3-1/4"1
11 X-352-39-S Stud, #2 cylinder valve cover - 1/4-20x2-1/4"1
12 52 096 18 Cover, #2 cylinder valve1
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Breather & Vent
M18-24521 Page 7 of 40
Camshaft & Valves
Ref # Part Number Qty Description
3 82 755 13-S Kit, camshaft Includes 1, 52 019 03-S [qty. 4]1
4 41 755 10-S Kit, retainer4
5 25 089 01-S Spring, intake valve2
6 52 032 13-S Seal, intake valve stem2
7 52 017 08-S Valve, intake2
8 82 755 11-S Kit, exhaust valve Includes 52 031 01-S valve seat insert2
9 25 089 01-S Spring, exhaust valve2
10 52 413 01-S Rotator, .03" exhaust valve2
12 230011-S Retainer, intake valve spring2
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Camshaft & Valves
M18-24521 Page 9 of 40
Carburetor (Pg 20)
Ref # Part Number Qty Description
1 52 853 07 Kit, fixed jet carburetor Includes 3,11-14, Carburetor
1
assembly 52-053-26*, 52-053-31*, 52-053-36* ( - or use - )
52 853 23-S Kit, adjustable jet carburetor Includes 3,11-14, Carburetor
1
assembly 52-053-50* or 52-053-66*
2 25 155 02-S Connector, 90ø hose For 1/4" I.D. rubber hose1
3 271030-S Gasket, carburetor1
4 X-6-8-S Screw, H.C. 5/16-18x2-3/4"4
5 X-21-1-S Washer, lock 5/16"4
6 52 041 09-S Gasket, intake manifold2
7 X-77-2-S Nut, hex. jam 5/16-182
8 X-352-37-S Stud 5/16-18x1"2
9 52 164 10-S Manifold, intake1
10 52 445 02-S Strap, lifting2
M18-24521 Page 10 of 40
Carburetor (Pg 20)
11 25 041 06-S Gasket, air cleaner1
12 82 755 07-S Kit, governor linkage Includes 131
13 25 158 09 Bushing Replaced by 25 158 11-S1
14 52 186 06-S Arm, governor1
M18-24521 Page 11 of 40
Crankcase
Ref # Part Number Qty Description
1 82 755 16-S Kit, cylinder barrel #1 Includes 3,4 and exhaust valve1
2 82 755 17-S Kit, cylinder barrel #2 Includes 3,4 and exhaust valve1
3 52 316 06 Guide, valve4
4 52 031 01-S Insert, valve seat4
5 X-82-2-S Nut, hex. 5/16-1812
6 52 468 12-S Washer, flat 5/16"12
9 25 086 10-S Screw, hex. flange 5/16-18x1-1/2"3
10 X-583-5-S Seal, rear oil 1-3/8" I.D.1
11 X-802-9-S Screw, hex. flange 5/16-18x1"9
12 52 755 56-S Kit, closure plate Includes 131
13 X-75-23-S Plug, hex. ctsk. 1/8" N.P.T.F.1
15 52 755 50-S Kit, oil relief Includes ball, spring & sleeve1
20 25 086 12-S Screw, hex. flange 5/16-18x2"2
21 X-75-10-S Plug, solid sq. hd. 3/8" N.P.T.F.1
M18-24521 Page 12 of 40
Crankcase
22 52 032 10-S Seal, front oil1
23 52 030 10-S Bearing, sleeve flange (Std.)2
23 52 030 11-S Bearing, sleeve flange (.010)2
23 52 030 12-S Bearing, sleeve flange (.020)2
28 X-75-32-S Plug, hex. ctsk. 3/8" N.P.T.F.2
31 X-67-64-S Screw, hex. wash. hd. 10-32x7/16"1
32 52 139 08-S Plug 3/4" O.D.1
33 52 141 02-S O-Ring1
34 X-702-15-S Plug, cup 5/16"1
37 52 237 05-S Clamp, tube1
41 52 123 10 Tube, oil pickup1
42 52 078 05-S Shaft, governor1
43 X-269-43-S Ring, retaining1
44 25 086 13-S Screw, hex. flange 3/8-16x3-5/8"2
45 25 086 11-S Screw, hex. flange 5/16-18x3-1/2"8
46 52 072 12-S Step stud 5/16-18x3/4", 3/8-16 x 5/8", 2" long12
47 52 095 03 Housing, oil strainer1
48 52 237 02-S Clamp, spring1
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