Tecumseh HM100-159028C Parts Manuals

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HM100-159028C Page 1 of 12
Engine Parts List #1

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HM100-159028C Page 2 of 12
Engine Parts List #1

Ref # Part Number Qty Description

1 34922A Cylinder (CI liner)(3-5/16")(Incl.2,2 0 & 72)
2 27652 Pin, Dowel

15B 650494 Screw, 6-40 x 5/16"

15 30699C Rod Assy., Governor (Incl. 15A & 15B)

15A 30700 Yoke, Governor

16 33454 Governor Lever Assy.
17 29916 Clamp, Governor lever
18 650548 Screw, 8-32 x 5/16"
19 33857 Spring Assy., Extension (Incl. 19B)
20 32630 Seal, Oil
25 29536 Blower Housing Baffle (Without electric starter knockout)

(Use as required)

25 35256A Blower Housing Baffle (With electric starter knockout) (Use

as required)

26 650561 Screw, 1/4-20 x 5/8"
30 35226 Crankshaft (Incl. 108 & 109)
35 29826 Screw, 10-32 x 3/4"
36 29918 Lockwasher, #8 E.T.
37 29216 Locknut, 10-32

37A 30322 Nut & Lockwasher, 8-32

38 29642 Ring, Retaining
40 34860A Piston, Pin & Ring Set (Std.)(3-5/16" )
40 34861A Piston, Pin & Ring Set (.010" OS)
40 34862A Piston, Pin & Ring Set (.020" OS)
41 34863 Piston & Pin Ass'y. (Std.)(3-5/16")(I ncl.43)
41 34864 Piston & Pin Ass'y. (.010" OS) (Incl. 43)
41 34865 Piston & Pin Ass'y. (.020" OS) (Incl. 43)
42 34866A Ring Set (Std.) (3-5/16" Bore)
42 34867A Ring Set (.010" OS)
42 34868A Ring Set (.020" OS)
43 27888 Ring, Piston Pin retaining
45 32591C Rod Assy., Connecting (Incl. 46, 47 & 49)
46 650662C Bolt, Connecting rod (2 pieces)
47 650662C Bolt, Connecting rod (2 pieces)
48 34034 Lifter, Valve
49 34242 Dipper, Oil
50 34143 Camshaft (MCR)
60 33273A Extension, Blower housing
65 650128 Screw, 10-24 x 1/2"
69 35262 * Gasket, Flange
70 33626B Cyl.Cover (Incl.71,75,80,179,180,220, 221)
72 27642 Plug, Oil drain
75 33625 Seal, Oil
80 31845 Shaft, Mechanical governor
81 30590A Washer, Flat
82 30591 Gear Assy., Governor (Incl. 81)
83 30588A Spool, Governor
84 29193 Ring, Retaining
86 650833 Screw, 1/4-20 x 1-3/16 (Use as requir ed)
87 650832 Screw, 1/4-20 x 1-11/16" (Use as requ ired)
89 32589 Key, Flywheel
90 611092 Flywheel (3 Amp)
92 650815 Washer, Belleville

93 8116 Nut, Hex
100 35135 Solid State Assy.
101 610118 Cover, Spark plug
102 650872 Stud, Solid state mounting

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HM100-159028C Page 3 of 12
Engine Parts List #1

Ref # Part Number Qty Description

103 650814 Screw, Torx T-15, 10-24 x 1"
108 29783 Pin, Crankshaft gear (Only serviceable when gear is pinned

to crank.)

109 33245 Gear, Crankshaft
119 34923A * Gasket, Cylinder head
120 34030A Head, Cylinder
125 27878A Exhaust Valve (Std.) (Incl. 151)
125 27880A Exhaust Valve (1/32" OS) (Incl. 151)
126 34035 Intake Valve (Std.) (Incl. 151)
126 34036 Intake Valve (1/32" OS) (Incl. 151)
127 650691 Washer (Do not use with No. 6021A scr ew.)
128 650690 Washer, Belleville (Use as required)
129 650727 Screw, 5/16-18 x 1-3/4 (Use as requir ed)
130 6021A Screw, 5/16-18 x 1-1/2" (Use as required, but do notuse No.

650691 washer.)

130 650711 Screw, 5/16-18 x 1-5/8 " (Use as required) (Can use 6021A

but discard 650691 washer.)

130 650694A Screw, 5/16-18 x 2" (Use as required)
131 650737 Screw, 1/4-20 x 1/2" (Use as required )
131 650738 Screw, 1/4-20 x 5/8 (Use as required)

131A 650713 Screw, 5/16-18 x 5/8"

133 650890 Washer, Internal Lock
135 33636 Resistor Spark Plug
139 33369 Bracket, Governor gear
140 650836 Screw, 10-24 x 1/2"

149A 35862 Seal Assy., Intake valve

150 27881 Spring, Valve
151 32581 Cap, Lower valve spring
169 27896A * Gasket, Breather
170 28423 Body, Breather
171 28424 Element, Breather
172 28425 Cover, Breather
173 35350 Tube, Breather
174 650128 Screw, 10-24 x 1/2"
182 650517 Screw, 1/4-20 x 27/32"
184 33263 * Gasket, Carburetor
186 34661 Link, Governor lever

187A 30196 Screw, 5/16-18 x 3/4"

187 34349A Flange, Carburetor mounting
200 34784 Control Bracket (Incl.19, 203, 204, 2 06, 209)
203 31342 Spring, Compression
204 650549 Screw, 5-40 x 7/16"
207 34785 Link, Governor lever-to-throttle
209 650821 Screw, 10-32 x 1/2"
210 27793 Clip, Conduit
211 28942 Screw, 10-32 x 3/8"

222A Pop Rivet (Can be purchased locally)

224 27915A * Gasket, Intake pipe

250B 33269A Cover, Air cleaner

260 33375D Blower Housing (For electric starter)
261 650788 Screw, 5/16-18 x 3/4"
262 29747B Screw, 5/16-24 x 21/32"
265 33272B Cover, Cylinder head
276 35741 Plate, Muffler locking
277 650729 Screw, 5/16-18 x 3-3/16" (Use as requ ired)
277 651002 Screw, 5/16-18 x 4-1/4" (Use as requi red)

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HM100-159028C Page 4 of 12
Engine Parts List #1

Ref # Part Number Qty Description

281 33013 Cover, Starter bubble
282 650760 Screw, 8-32 x 7/16"
285 32125 Cup, Starter
286 35194 Screen, Starter
287 29752 Nut, 1/4-28
290 29774 Fuel Line (Braided 8-1/4")(21cm)(As r equired)
290 30962 Fuel Line (Braided 32")(80cm)(As requ ired)
291 30705 Fuel Line (Braided 16")(40cm)(As requ ired)
292 26460 Fuel Line Clamp (Use as required)
298 650665 Screw, 1/4-15 x 7/8"
300 34156A Fuel Tank (Incl. 292 & 301) NOTE: These tanks were

builtwith different size fuel inlet openings. Tanks with the
1-3/16" I.D. opening use fuel cap 34210. Tanks with the
1-1/2" I.D. opening use fuel cap 35355.

301A 410144B Fuel Cap (White Plastic)(Standard) (Use as required) (1.5"

I.D.)

301A 33032 Fuel Cap (Red Plastic) (Spurt Resistant, Low Profile) (Use as

required) (1.5" I.D.)

301A 34210 Fuel Cap (Red Plastic) (Spurt Resistant, High Profile) (Use

as required) (1.5" I.D.)

301A 35355 Fuel Cap (Red Plastic)(1.75" I.D.)

306 29673 * Gasket, Oil filler
310 31297 Dipstick (Incl. 307)
316 611095 Alternator Coil (3 Amp, A.C.)(Incl.32 2 & 323)
325 34246 Clip, Ground wire

338A 31291 Plug, Cover

340 34154 Plate, Upper fuel tank mtg.
341 34155 Bracket, Lower fuel tank mtg.
342 650561 Screw, 1/4-20 x 5/8"

370A 34686 Decal, Name

370 34346 Decal, Instruction
370 35274 Decal, Instruction
379 631725 Inlet Needle, Seat & Clip Assy.
380 632406 Carburetor (Incl. 184 & 379) (Refer to Div. 5, Sec. A, page

A3-8 for breakdown or Fiche 18B, Grid D-1)

400 33279G * Gasket Set (Incl. items marked *)
420 730225 SAE 30 4-Cycle Engine Oil (Quart)
421 730226 SAE 5W30 4-Cycle Engine Oil (Quart)
422 35824 Muffler Optional

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HM100-159028C Page 5 of 12
Engine Parts List #2

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HM100-159028C Page 6 of 12
Engine Parts List #2

Ref # Part Number Qty Description

37A 30322 Nut & Lockwasher, 8-32

129 650727 Screw, 5/16-18 x 1-3/4 (Use as requir ed)

131A 650713 Screw, 5/16-18 x 5/8"

131 650737 Screw, 1/4-20 x 1/2" (Use as required )
131 650738 Screw, 1/4-20 x 5/8 (Use as required)

187A 30196 Screw, 5/16-18 x 3/4"

187 34349A Flange, Carburetor mounting

222A Pop Rivet (Can be purchased locally)
250B 33269A Cover, Air cleaner

274 35865 Gasket, Exhaust

275A 33714 Muffler (Incl. 284, 284A & 414)

277 650729 Screw, 5/16-18 x 3-3/16" (Use as requ ired)
277 651002 Screw, 5/16-18 x 4-1/4" (Use as requi red)
284 34390 Deflector
290 29774 Fuel Line (Braided 8-1/4")(21cm)(As r equired)
290 30962 Fuel Line (Braided 32")(80cm)(As requ ired)
292 26460 Fuel Line Clamp (Use as required)
298 650665 Screw, 1/4-15 x 7/8"
300 34156A Fuel Tank (Incl. 292 & 301) NOTE: These tanks were

builtwith different size fuel inlet openings. Tanks with the
1-3/16" I.D. opening use fuel cap 34210. Tanks with the
1-1/2" I.D. opening use fuel cap 35355.

301A 410144B Fuel Cap (White Plastic)(Standard) (Use as required) (1.5"

I.D.)

301A 33032 Fuel Cap (Red Plastic) (Spurt Resistant, Low Profile) (Use as

required) (1.5" I.D.)

301A 34210 Fuel Cap (Red Plastic) (Spurt Resistant, High Profile) (Use

as required) (1.5" I.D.)

301A 35355 Fuel Cap (Red Plastic)(1.75" I.D.)

306 29673 * Gasket, Oil filler
316 611095 Alternator Coil (3 Amp, A.C.)(Incl.32 2 & 323)

338A 31291 Plug, Cover

341 34155 Bracket, Lower fuel tank mtg.
342 650561 Screw, 1/4-20 x 5/8"
414 33323 Opt.Muffler Screen (Mini-Bike applica tion)
415 730130 Kit, Exhaust adapter (Incl. 274 & 277 )
418 33700 Cover & Tube, Muffler (use as require d)
419 650578 Screw, 8-18 x 3/8" (use as required)
421 730226 SAE 5W30 4-Cycle Engine Oil (Quart)
422 35824 Muffler Optional

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HM100-159028C Page 7 of 12
Engine Parts List #3

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HM100-159028C Page 8 of 12
Engine Parts List #3

Ref # Part Number Qty Description

19B 28942 Screw, 10-32 x 3/8"

19 33857 Spring Assy., Extension (Incl. 19B)

37A 30322 Nut & Lockwasher, 8-32

129 650727 Screw, 5/16-18 x 1-3/4 (Use as requir ed)

131A 650713 Screw, 5/16-18 x 5/8"

131 650737 Screw, 1/4-20 x 1/2" (Use as required )
131 650738 Screw, 1/4-20 x 5/8 (Use as required)

187A 30196 Screw, 5/16-18 x 3/4"

187 34349A Flange, Carburetor mounting

200B 730152 Control Bracket (Incl.1158-1171)(As r eq.)

203 31342 Spring, Compression
204 650549 Screw, 5-40 x 7/16"
210 27793 Clip, Conduit
211 28942 Screw, 10-32 x 3/8"

222A Pop Rivet (Can be purchased locally)
225A 631334 Gasket, Carburetor

225 35043 Tube Assy., Carburetor
227 730127 Air Cleaner Ass'y. (Incl. 238, 239, 242, 246, 250) (Use as

required)

238 28820 Screw, 10-32 x 1/2"
239 27272A * Gasket, Air cleaner
241 33266 Bracket, Air cleaner
242 33267 Bracket, Air cleaner
245 33268 Element, Air cleaner

250B 33269A Cover, Air cleaner

251 650513 Nut, Wing 1/4-20
290 29774 Fuel Line (Braided 8-1/4")(21cm)(As r equired)
290 30962 Fuel Line (Braided 32")(80cm)(As requ ired)
291 30705 Fuel Line (Braided 16")(40cm)(As requ ired)
293 34385 Impulse Fuel Pump NOTE: 34385 and 33715 (WIP)pumps

are replaced by 35813 and 35800 (WIP) pumps. The 33010
(3000 series) repair kit is still available. The 35791 repair kit
is used with the 35813 and 35800 fuel pumps.

293 33715 Impulse Fuel Pump NOTE: 34385 and 33715 (WIP)pumps

are replaced by 35813 and 35800 (WIP) pumps. The 33010
(3000 series) repair kit is still available. The 35791 repair kit
is used with the 35813 and 35800 fuel pumps.

294 33010 Fuel Pump Repair Kit NOTE: 34385 and 33715 (WIP)pumps

are replaced by 35813 and 35800 (WIP) pumps. The 33010
(3000 series) repair kit is still available. The 35791 repair kit
is used with the 35813 and 35800 fuel pumps.

294 35791 Fuel Pump Repair Kit NOTE: 34385 and 33715 (WIP)pumps

are replaced by 35813 and 35800 (WIP) pumps. The 33010
(3000 series) repair kit is still available. The 35791 repair kit
is used with the 35813 and 35800 fuel pumps.

301A 410144B Fuel Cap (White Plastic)(Standard) (Use as required) (1.5"

I.D.)

301A 33032 Fuel Cap (Red Plastic) (Spurt Resistant, Low Profile) (Use as

required) (1.5" I.D.)

301A 34210 Fuel Cap (Red Plastic) (Spurt Resistant, High Profile) (Use

as required) (1.5" I.D.)

301A 35355 Fuel Cap (Red Plastic)(1.75" I.D.)

303 32958 Fitting, Fuel
303 33713 Fitting, Fuel line elbow

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HM100-159028C Page 9 of 12
Engine Parts List #3

Ref # Part Number Qty Description
303A 34237 Fitting, Fuel

306 29673 * Gasket, Oil filler
316 611095 Alternator Coil (3 Amp, A.C.)(Incl.32 2 & 323)

338A 31291 Plug, Cover

370 34346 Decal, Instruction
370 35274 Decal, Instruction
421 730226 SAE 5W30 4-Cycle Engine Oil (Quart)
422 35824 Muffler Optional

1159 30312 Screw, 10-32 x 1/2"
1160 28820 Screw, 10-32 x 1/2"
1160 27070 Lockwasher
1185 33816 Hub & Screen Assy.

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HM100-159028C Page 10 of 12
Engine Parts List #4

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HM100-159028C Page 11 of 12
Engine Parts List #4

Ref # Part Number Qty Description

1 34922A Cylinder (CI liner)(3-5/16")(Incl.2,2 0 & 72)

2 27652 Pin, Dowel
23 33627 Bearing, Ball
32 33628 Washer, Thrust

37A 30322 Nut & Lockwasher, 8-32

72 27642 Plug, Oil drain
74 31855 Retainer, Bearing
90 611092 Flywheel (3 Amp)

100 35135 Solid State Assy.
101 610118 Cover, Spark plug
102 650872 Stud, Solid state mounting
103 650814 Screw, Torx T-15, 10-24 x 1"
129 650727 Screw, 5/16-18 x 1-3/4 (Use as requir ed)
131 650737 Screw, 1/4-20 x 1/2" (Use as required )
131 650738 Screw, 1/4-20 x 5/8 (Use as required)

131A 650713 Screw, 5/16-18 x 5/8"

169 27896A * Gasket, Breather
170 28423 Body, Breather
171 28424 Element, Breather
172 28425 Cover, Breather
173 35350 Tube, Breather
174 650128 Screw, 10-24 x 1/2"
175 650778 Lockwasher
176 650580 Nut, Lock

187A 30196 Screw, 5/16-18 x 3/4"

187 34349A Flange, Carburetor mounting
207 34785 Link, Governor lever-to-throttle

222A Pop Rivet (Can be purchased locally)

238 28820 Screw, 10-32 x 1/2"
239 27272A * Gasket, Air cleaner
241 33266 Bracket, Air cleaner
242 33267 Bracket, Air cleaner
245 33268 Element, Air cleaner

250B 33269A Cover, Air cleaner

251 650513 Nut, Wing 1/4-20

275B 391026 Muffler (Incl. 284, 284A & 416) (This spark arrester

mufflercan be used on any model.)

276 35741 Plate, Muffler locking
277 650729 Screw, 5/16-18 x 3-3/16" (Use as requ ired)
277 651002 Screw, 5/16-18 x 4-1/4" (Use as requi red)

301A 410144B Fuel Cap (White Plastic)(Standard) (Use as required) (1.5"

I.D.)

301A 33032 Fuel Cap (Red Plastic) (Spurt Resistant, Low Profile) (Use as

required) (1.5" I.D.)

301A 34210 Fuel Cap (Red Plastic) (Spurt Resistant, High Profile) (Use

as required) (1.5" I.D.)

301A 35355 Fuel Cap (Red Plastic)(1.75" I.D.)

306 29673 * Gasket, Oil filler
313A 33876 Gasket, Stator (Used only on Std. poi nt ign.)
313A 35189 Spacer, Coil

314 650873 Screw, 1/4-20 x 3/4"

316 611095 Alternator Coil (3 Amp, A.C.)(Incl.32 2 & 323)

322 610823 Connector, Pyramid

323 610822 Terminal, Male
338A 31291 Plug, Cover

377 30547A Breaker Points (Use with Std. point i gn.)

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HM100-159028C Page 12 of 12
Engine Parts List #4

Ref # Part Number Qty Description

380 632406 Carburetor (Incl. 184 & 379) (Refer to Div. 5, Sec. A, page

A3-8 for breakdown or Fiche 18B, Grid D-1)

421 730226 SAE 5W30 4-Cycle Engine Oil (Quart)

422 35824 Muffler Optional

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