Tecumseh OHM120-224602A User manual
OHM120-224602APage 1 of 6
Engine Parts List #1
OHM120-224602APage 2 of 6
Engine Parts List #1
Ref # Part Number Qty Description
137083 Cylinder (Incl. 2, 20, 72 & 80)1
227652 Dowel Pin2
14 28277 Washer1
14A 651057 Washer1
15 35685 Governor Rod (Incl. 14 & 38)1
16 35686 Governor Lever1
17 29916 Governor Lever Clamp1
18 651028 Screw, Torx T-15, 8-32 x 3/8"1
19 35688 Extension Spring1
19D 33857 Extension Spring Assembly1
20 35319 Oil Seal1
25 36460 Blower Housing Baffle1
26 650561 Screw, 1/4-20 x 5/8"2
28 30322 Lock Nut, 10-321
30 35680A Crankshaft1
31 35327 Counterbalance Gear1
35 29826 Screw, 10-32 x 3/4"1
36 29918 Lock Washer1
37 29216 Lock Nut, 10-321
38 29642 Retaining Ring3
40 35776A Piston, Pin & Ring Set (Std.)1
40 35777A Piston, Pin & Ring Set (.010" OS)1
40 35778A Piston, Pin & Ring Set (.020" OS)1
41 35773A Piston & Pin Ass'y (Std.) (Incl. 43)1
41 35774A Piston & Pin Ass'y (.010" OS) (Incl. 43)1
41 35775A Piston & Pin Ass'y (.020" OS) (Incl. 43)1
42 35779 Ring Set (Std.)1
42 35780 Ring Set (.010" OS)1
42 35781 Ring Set (.020" OS)1
43 35772 Piston Pin Retaining Ring2
45 36898 Connecting Rod Ass'y (Incl. 47)1
47 651033 Connecting Rod Bolt2
48 35313 Valve Lifter2
50 35682A Camshaft (MCR)1
51 35315A Counterbalance Weight1
60 35316A Blower Housing Extension1
65 650784 Screw, 10-24 x 11/16"1
66 650561 Screw, 1/4-20 x 19/32"1
69 35683 * Cylinder Cover Gasket1
70 35684A Cylinder Cover (Incl.14,15,38,71,75)1
71 35377 Crankshaft Bushing1
72 27642 Oil Drain Plug2
75 35319 Oil Seal1
80 35751 Governor Shaft1
81 35479 Washer2
82 35321 Governor Gear Ass'y1
83 35322 Governor Spool1
84 29193 Retaining Ring1
86 650833 Screw, 1/4-20 x 1-3/16"7
87 650832 Screw, 1/4-20 x 1-11/16"1
89 32589 Flywheel Key1
90 611094 Flywheel (W/Ring Gear)1
92 650880 Lock Washer1
93 650881 Flywheel Nut1
100 35135 Solid State Ignition1
101 610118 Spark Plug Cover1
OHM120-224602APage 3 of 6
Engine Parts List #1
Ref # Part Number Qty Description
102 651024 Solid State Mounting Stud2
103 651007 Screw, Torx T-15, 10-24 x 15/16"2
119 36932 * Cylinder Head Gasket1
120 37084 Cyinder Head1
125 36934 Exhaust Valve (Std.)1
125 36936 Exhaust Valve (1/32" OS)1
126 36935 Intake Valve (Std.)1
126 36937 Intake Valve (1/32" OS)1
127 650691 Washer6
128 650690 Belleville Washer6
130 650697A Screw, 5/16-18 x 2-1/2"6
135 34645 Spark Plug (RN4C)1
150 33507 Valve Spring2
151 33508 Valve Spring Keeper2
153 35949 Push Rod Guide1
154 650945 Rocker Arm Stud2
155 35950 Rocker Arm2
157 650947 Jam Nut2
158 35466 Push Rod2
159 35952 * Rocker Arm Cover Gasket1
160 35953A Rocker Arm Housing1
161 30063 Screw, Torx T-30, 1/4-20 x 1/2"4
163 650890 Lock Washer2
169 27896A * Valve Cover Gasket2
170 28423 Breather Body1
171 28424 Breather Element1
172 28425 Valve Cover1
173 35350 Breather Tube1
174 650128 Screw, 10-24 x 1/2"2
180 37101 Blower Housing Extension1
181 30200 Lock Nut, 10-322
182 650517 Screw, 1/4-20 x 27/32"2
184 33263 * Carburetor To Intake Pipe Gasket1
185 37085 Intake Pipe1
186 35691 Governor Link1
200 37223 Control Bracket (Incl. 203 & 204)1
202 36482 Compression Spring1
203 31342 Compression Spring1
204 651029 Screw, Torx T-10, 5-40 x 7/16"1
205 651019 Screw, Torx T-10, 6-32 x 41/64"1
207 35692 Throttle Link1
209 650821 Screw, 10-32 x 1/2"2
210 27793 Conduit Clip1
211 650837 Screw, 10-32 x 9/32"2
212 30773A Bushing1
213 650930 Screw, 10-32 x 5/8"1
216 35679 R.P.M. Adjusting Lever1
223 650971 Screw, Torx T-30, 5/16-18 x 7/8"2
224 33515A * Intake Pipe Gasket1
233A 37169 "O" Ring1
233 37168 "O" Ring1
235 37167 Breather Tube Fitting1
238 28820 Screw, 10-32 x 1/2"2
239 27272A * Air Cleaner Gasket1
240 32377 Air Cleaner Bracket Ass'y1
242 37166 Air Cleaner Bracket1
OHM120-224602APage 4 of 6
Engine Parts List #1
Ref # Part Number Qty Description
245 31925 Air Cleaner Filter1
250 31926 Air Cleaner Cover1
251 650513 Wing Nut, 1/4-201
260 35716 Blower Housing1
262 29747B Screw, Torx T-40, 5/16-24 x 21/32"2
264A 650888 Screw, Torx T-30, 1/4-20 x 43/64"1
265 37086 Cylinder Head Cover1
266 650876 Screw, 5/16-18 x 1-1/4"2
269 35762 * Exhaust Manifold Gasket2
270 35292 Exhaust Manifold1
270A 35829A Exhaust Port Liner1
271 35293 Locking Plate (Manifold)1
275 35294A Muffler1
276 35348 Locking Plate1
277 650877 Screw, 5/16-18 x 4-1/2"2
280 37224 Heat Shield1
285 35985B Starter Cup1
287 29752 Nut & Lock Washer, 1/4-284
290 30962 Fuel Line1
292 26460 Fuel Line Clamp4
298 650665 Screw, 1/4-15 x 3/4"2
300 34156A Fuel Tank (Incl. 292 & 301)1
301 35355 Fuel Cap1
304 35480 Fuel Cap Retainer1
305 35574 Oil Fill Tube1
307 35499 "O" Ring1
308 35539 Fill Tube Clip1
310 35700 Dipstick1
314 650873 Screw, 1/4-20 x 3/4"2
319 650735 Screw, 10-24 x 3/8"2
320 611098A Regulator (7 Amp)1
322 610921 Connector Body1
322A 610824 Connector Body1
323 610922 Terminal1
340 35696 Fuel Tank Bracket1
341 35697 Fuel Tank Bracket1
342 792028 Screw, 5/16-18 x 7/8"2
355 590701 Starter Handle1
361 650990 Screw, Torx T-30, 1/4-20 x 15/32"4
370K 36695 Logo Decal 12 H.P.1
370G 35274 Oil Instruction Decal1
380 640151 Carburetor (Incl. 184)1
390 590746 Rewind Starter1
395 36680 Electric Starter Motor (12 Volt)1
400 36947B *Gasket Set (Incl. items marked PK in notes) Incl. part #'s
27272A (1),27896A (2), 33263 (1), 33515A (1), 3531 7 (1),
35683 (1), 35762 (2), 35952 (1 ), 36333 (1), 36352 (1), 36358
(1), 3 6832 (1), 36930 (1), 36932 (1), 36942 (1)
1
420 730225 SAE 30 4-Cycle Engine Oil (Quart)1
OHM120-224602APage 5 of 6
Engine Parts List #2
OHM120-224602APage 6 of 6
Engine Parts List #2
Ref # Part Number Qty Description
170 28423 Breather Body1
174 650128 Screw, 10-24 x 1/2"2
260 35716 Blower Housing1
298 650665 Screw, 1/4-15 x 3/4"2
301 35355 Fuel Cap1
314 650873 Screw, 1/4-20 x 3/4"2
315 611097 Alternator Coil (Incl. 322,322A & 323 )1
322 610921 Connector Body1
323 610922 Terminal1
341 35697 Fuel Tank Bracket1
342 792028 Screw, 5/16-18 x 7/8"2
345 35699 Heat Baffle1
361 650990 Screw, Torx T-30, 1/4-20 x 15/32"4
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