Detailed instructions for use are in the User's Guide.
[. . . ] M18-24521 Air Intake
Page 1 of 40
Ref # 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 31
Part Number X-276-7-S 52 082 02-S 52 032 01-S 231032-S 52 082 03-S 52 083 01-S1 47 083 01-S1 X-67-83-S 52 201 07-S 25 041 06-S 52 754 03-S X-22-9-S X-50-57-S X-50-37-S X-25-79-S 52 055 04-S X-352-38-S X-67-62-S 25 113 07-S
Qty Description 2 Wing nut 1/4-20 1 Cover, air cleaner - square 1 Seal, air cleaner cover 2 Seal, element cover 1 Cover, air cleaner element 1 Precleaner 1 Element, air cleaner 1 Screw, hex. 1/4-20x7/16" 1 Base, air cleaner 1 Gasket, air cleaner elbow 1 Kit, air intake elbow Includes 11, 31 2 Washer, I. T. 10-32x2-1/4" 1 1 Washer, plain #10 1 Gasket, air cleaner 1 Stud 1/4-20x4-3/4" 1 Screw, hex. [. . . ] 1 1 Seal, front oil 2 Bearing, sleeve flange (Std. ) 2 Bearing, sleeve flange (. 010) 2 Bearing, sleeve flange (. 020) 2 Plug, hex. 1 O-Ring 1 Plug, cup 5/16" 1 Clamp, tube 1 Tube, oil pickup 1 Shaft, governor 1 Ring, retaining 2 Screw, hex. flange 5/16-18x3-1/2" 12 Step stud 5/16-18x3/4", 3/8-16 x 5/8", 2" long 1 Housing, oil strainer 1 Clamp, spring
M18-24521 Crankshaft
Page 13 of 40
Ref # 1 2 2 2
Part Number 52 014 79-S 52 468 03-S 52 468 04-S 52 468 05-S
Qty 1 A. R. x 2-3/4" tapped PTO) Washer, thrust . 119/. 122 Washer, thrust . 128/. 131 Washer, thrust . 137/. 140
M18-24521 Crankshaft
Page 14 of 40
M18-24521 Page 15 of 40 Cylinder Head
Ref # 1 3 6 7
Part Number 52 041 20-S 52 015 08-S 41 086 02-S 220534-S
Qty 2 2 18 18
Description Gasket, cylinder head Head, cylinder Screw, hex. 5/16-18x1-1/2" Washer, plain 5/16"
M18-24521 Page 16 of 40 Cylinder Head
M18-24521 Dipstick
Page 17 of 40
Ref # 1 2 3 4 5 6
Part Number 52 038 04-S 52 123 09-S X-67-64-S 52 154 01-S 52 173 01-S 46 136 02-S
Qty 1 1 1 1 1 1
Description Dipstick 11-5/16" blade Tube, oil level Screw, hex. x 3"
M18-24521 Dipstick
Page 18 of 40
M18-24521 Page 19 of 40 Electric Start - Pg. 33
Ref # 1 2 3 4 5 6 7 8 9 10
Part Number 52 098 03 X-20-1-S X-81-1-S 52 755 05 52 755 08 52 227 01 52 170 02-S 52 211 01-S 277612 48 755 15 25 450 03-S 52 357 01-S
Qty Description 1 Starter assembly Includes 4-10 2 Washer, lock 1/4" 2 Nut, hex. 1/4-20 1 Kit, drive Includes 5 1 Kit, drive parts 1 Cap, drive end 1 Armature 2 Bolt, thru 1/4-20x5-7/8" 1 Cap assembly, commutator end Includes 10 1 Kit, brush & spring Replaced by 52 755 15 1 Tag, caution 1 Lubricant, starter M18-24521 Page 20 of 40 Electric Start - Pg. 33
M18-24521 Exhaust
Page 21 of 40
Ref # 4 10
Part Number X-21-1-S 52 041 14-S
Qty 4 2
Description Washer, lock 5/16" Gasket, exhaust
M18-24521 Exhaust
Page 22 of 40
M18-24521 Flywheel
Page 23 of 40
Ref # 1 2 4 5 6 7 8 11 20 22
Part Number 52 025 36-S 52 468 15-S 25 086 24-S X-286-17-S 25 157 01-S 25 112 04-S 25 086 21-S 25 162 02-S X-159-2-S 237373
Qty 1 1 1 1 1 4 4 1 4 1 M18-24521 Flywheel
Description Flywheel Washer, flat 3/8" I. D. , 1-3/8" O. D. 3/8-24x1-1/4" Key, square 7/8x3/16x3/16" Fan Spacer 1/8" Screw, hex. sems 3/8-16x1" Adapter, front drive Page 24 of 40
M18-24521 Page 25 of 40 Fuel Pump (Threaded)
Ref # 1 2 3 5 7 8 9 10
Part Number 52 559 01-S 25 041 09-S X-25-63-S 25 155 02-S X-380-1-S X-426-9-S 52 353 04-S 47 086 08-S
Qty 1 1 2 1 1 2 1 2
Description Pump, fuel assembly (w/threaded fittings) Includes 2-7 Gasket, fuel pump Washer, plain 1/4" Connector, 90 degree hose For 1/4" I. D. rubber hose Clamp, hose 1/2" Line, fuel 6-3/4" Screw, pozidriv T. H. 1/4-20x5/8"
M18-24521 Page 26 of 40 Fuel Pump (Threaded)
M18-24521 Gasket Set
Page 27 of 40
Ref #
Part Number 52 755 94-S X-583-5-S 271030-S 25 041 06-S 25 041 05 52 032 04-S 52 032 13-S 52 032 08-S 52 032 10-S 52 041 15-S 52 041 09-S 52 041 10 52 041 16-S 52 041 20-S 52 055 01-S 52 055 04-S 277093-S 52 041 14-S 25 041 09-S
Qty Description 1 GASKET SET 1 Oil Seal 1 Gasket, carburetor 1 Gasket, air cleaner elbow 1 Gasket, fuel pump 1 Seal, breather 2 Seal, valve stem 1 Seal, oil rear - 1-1/2" O. D. 2 Seal, oil 1 Gasket, closure plate 2 Gasket, intake 2 Gasket, exhaust M18-24521 Gasket, oil filter40 Page 28 of cover 1 Gasket Set Gasket, cylinder head 2 2 Gasket, valve cover 2 Gasket, air cleaner 1 Gasket, air cleaner 2 Gasket, exhaust 1 Gasket, fuel pump
M18-24521 Governor
Page 29 of 40
Ref # 3 4 5 6 7 8 12 13 17 20 21 22 23 24 26 27 28 29 31 39 41 44 45
Part Number 52 186 06-S 25 158 09 X-81-1-S X-25-72-S 52 211 04-S 52 091 04-S X-67-97-S 235778-S 234614-S 52 119 01-S 52 531 02-S 231355-S X-25-12-S 52 078 04-S X-25-63-S X-269-28-S A-235743-S 237022-S 82 755 07-S X-67-83-S 52 126 16-S X-25-102-S X-67-62-S
Qty Description 1 Arm, governor 2 Bushing, linkage Replaced by 25 158 11-S 1 Nut, hex. [. . . ] 1 1 4
Description Rotor Set Shaft, oil pump Gear, oil pump Spacer A Maximum of two (2) will be needed. 10-32x7/16"
M18-24521 Oil Pump
Page 38 of 40
M18-24521 Page 39 of 40 Piston & Rod
Ref # 1 1 2 2 2 2 2 3 4 4 4 4
Part Number 52 067 67-S 52 067 68-S 52 874 11-S 52 874 12-S 52 874 13-S 52 874 14-S 52 874 15-S 230004-S 52 108 09-S 52 108 10-S 52 108 11-S 52 108 12-S
Qty Description 2 Connecting Rod (Std. ) 2 Connecting Rod (. 010) 1 Piston w/Ring Set (Std. ) 1 Piston w/Ring Set (. 003) 1 Piston w/Ring Set (. 010) 1 Piston w/Ring Set (. 020) 1 Piston w/Ring Set (. 030) 4 Retainer, piston pin 2 Ring Set (Std. & . 003) 2 Ring Set (. 010) 2 Ring Set (. 020) 2 Ring Set (. 030) M18-24521 Page 40 of 40 Piston & Rod [. . . ]