Detailed instructions for use are in the User's Guide.
[. . . ] 10-32x2-1/4" 1 1 Washer, plain #10 1 Gasket, air cleaner 1 Stud 1/4-20x4-3/4" 1 Screw, hex. 1/4-20x3/4" 1 Decal, air cleaner NOT ILLUSTRATED
M18-24521 Page 3 of 40 Baffles & Shroud
Ref # 7 10 11 12 13 14 22 27
Part Number 52 124 23-S X-67-83-S 52 063 21-S 52 063 01-S 52 086 11-S 52 468 16-S 52 217 01-S 52 755 70-S
Qty 1 20 1 1 2 2 1 1
Description Baffle, #1 cylinder head (6-1/8" wide with 3" wide rear cylinder baffle) Screw, hex. 1/4-20x7/16" Baffle, #2 cylinder head (8-3/4" wide with 2-59/64" wide rear cylinder baffle)
Baffle, fuel pump Screw, hex. [. . . ] flange 5/16-18x2" Page 12 of 40 2 Crankcase Plug, solid sq. 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. A. R.
Description Crankshaft (1" dia. 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. 10-32x7/16" Clip, tube Cap, pipe Pipe, 1" N. P. T. F. 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. 1/4-20x5/8" Screen, grass 3-1/2" dia. 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 Connector, straight For 3/8" I. D. [. . . ] sems 1/4-20x5/8" 1 Lead, black, rectifier-regulator (5" - 14 gauge - uninsulated M18-24521 push on tab of 40 Page 32 terminals) (Not Illustrated) Ignition 1 Lead, white, module to connector (12-1/2" - 14 gauge insulated push on tab - uninsulated push on tab) (Not Illustrated) 1 Terminal (Not Illustrated)
25 452 01-S
M18-24521 Page 33 of 40 Low Oil Pressure Switch
Ref # 1
Part Number 52 099 06 52 518 13-S
Qty 1 1
Description Switch, oil pressure Lead, green, pressure switch (21" - 18 gauge - insulated push on tab and uninsulated push on tab terminals) (Not Illustrated) Decal, oil sentry (Not Illustrated)
25 113 05-S
1
M18-24521 Page 34 of 40 Low Oil Pressure Switch
M18-24521 Oil Filter
Page 35 of 40
Ref # 1 2 3 4
Part Number 52 041 16-S 52 181 03 X-55-15-S 52 050 02-S1
Qty 1 1 4 1
Description Gasket Adapter Screw, hex. cap 5/16-18x1-1/4" Oil filter
M18-24521 Oil Filter
Page 36 of 40
M18-24521 Oil Pump
Page 37 of 40
Ref # 1 2 3 4 5 6 7
Part Number 52 393 09-S 52 144 05-S 52 043 05-S 52 422 01-S X-280-25-S 52 096 03-S X-67-64-S
Qty 1 1 1 A. R. 1 1 4
Description Rotor Set Shaft, oil pump Gear, oil pump Spacer A Maximum of two (2) will be needed. [. . . ]