For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983
OH120-175023C Page 1 of 9
Engine Parts List #1
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OH120-175023C Page 2 of 9
Engine Parts List #1
Ref # Part Number Qty Description
1 34291A Cylinder (Incl. 2, 4 & 33) (3-1/8" Bo re)
2 31927 Pipe Plug, 3/8-18 sq. head (Use as re quired)
2 28483 Pipe Plug (3/8-18 hex countersunk) (A s req.)
2 Pipe Plug (3/4-14 sq.hd.)(As req.)(Bu y local)
2 9556 Pipe Plug (1/8-27 sq. hd.) (Use as re quired)
2 28534 Pipe Plug(1/8-27 hex c/sunk headless) (As req)
4 27652 Pin, Dowel
5 34045A Crankshaft (Incl. 6 thru 9) NOTE: When using this
crankshaft to repair older units equippedwith straight cut cam
and governor gears,it will be necessary to order 34751 helical
governor gear assembly and 34752 helical camshaft in order
to the complete the repair.
6 29783 Pin, Crankshaft gear
7 34692 Gear Crankshaft (Helical)
8 31932 Bearing, Tapered roller
9 31928 Cup, Bearing
10A 34223 Bearing & Seal Assy., Needle
10 34222 Bearing, Needle
11 34546 Piston, Pin & Ring Set (Std.) (3-1/8" Bore)
11 34547 Piston, Pin & Ring Set (.010" OS)
11 34548 Piston, Pin & Ring Set (.020" OS)
11A 34292B Piston & Pin Ass'y. (Std.)(3-1/8")(In cl.12)
11A 34293B Piston & Pin Ass'y. (.010" OS) (Incl. 12)
11A 34294B Piston & Pin Ass'y. (.020" OS) (Incl. 12)
12 31919 Ring, Piston pin retaining
13 34297 Ring Set (Std.) (3-1/8" Bore)
13 34298 Ring Set (.010" OS)
13 34299 Ring Set (.020" OS)
14 33093A Connecting Rod Assy.(Std.)(Incl.15, 1 6 & 17)
14 34383 Connecting Rod Assy.(.010" US)(Incl.1 5,16,17)
14 34384 Connecting Rod Assy.(.020" US)(Incl.1 5,16.17)
15 32077 Bolt, Connecting rod
16 26073 Washer, Connecting rod
17 28264 Nut Assy.
18 34752 Camshaft (MCR) (Helical)
19 33472 Lifter, Valve
20 33471 Rod, Push
21 33505 Intake Valve (Std.)
21 33645 Intake Valve (1/32" OS)
22 33506 Exhaust Valve (Std.)
22 33646 Exhaust Valve (1/32" OS)
23 33507 Spring, Valve
24 33508 Retainer & Cap Set, Keeper valve
25A 34410 * "O" Ring (Exhaust only) (Also Incl. i n 251)
25 33509 * "O" Ring (Intake only) (Also Incl. in 251)
26 33510 Cap, Valve
27 34751 Governor Gear Ass'y. (Helical)
28 650745 Washer, Flat
29 35479 Washer, Flat (Use with 35322 spool)
29 30590A Washer, Flat
30 31948 Spool, Governor
31 31956B * Gasket, Cylinder cover
32 34095 Cylinder Cover Ass'y. (Incl. 2, 10, 10A, 33, 36, 37, 38, 93,
194 & 195)
33 31950 * Seal, Oil
34 650451 Screw, 1/4-20 x 1"
35 650588 Screw, 1/4-20 x 2"
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OH120-175023C Page 3 of 9
Engine Parts List #1
Ref # Part Number Qty Description
36 32425 Rod Assy., Governor
37 32426 Spacer, Governor rod
38 29193 Ring, Retaining
39 650736 Screw, 10-16 x 3/8"
40 33495 Cover, Cylinder head
41 34302A * Gasket, Cylinder head
42 34767 Head, Cylinder
45 35552 Spark Plug (RL-82C)
46A 650691 Washer, Flat
46 650690 Washer, Belleville
47 650692 Screw, 5/16-18 x 1-3/4"
47A 650746 Screw, 5/16-18 x 1-3/8"
48 730218 Valve Guide Kit (Incl. 49)
49 792035 Ring, Retaining
50 33515A * Gasket, Intake pipe
51 33475 Pipe, Intake
52 650378 Screw, Torx T-30, 5/16-18 x 1-1/8"
53 792028 Screw, 5/16-18 x 7/8"
54 33476A * Gasket, Carburetor
55 33477A Baffle, Air cleaner
56 792075 Nut, Lock 5/16-24 (Used in early prod uction)
57 33478 Link, Governor lever-to-throttle leve r
58 31963 Lever, Governor
59 31964 Clamp, Governor lever
60 650518 Lockwasher, No. 10 E.T.
61 30312 Screw, 10-32 x 1/2"
62 650544 Screw, Torx T-25, 10-24 x 7/8"
63 7975 Nut, 10-24
64 31965 Plate, Governor spring
65 31984A Lever Assy., Control
66 28558 Washer, Wave
67 31966 Bushing, Governor lever
68 650597 Screw, 10-24 x 5/8"
69 31967 Spring, Governor
70 650591 Screw, 10-24 x 2"
71 33099 Spring
72 32599 "O" Ring (Incl. in 251)
73 650666 Washer, Lock
74 32579 Baffle, Blower housing
75 650561 Screw, 1/4-20 x 5/8"
76 650592 Key, Flywheel
77A 730201 Trigger Pin Kit (Use as required)
77 610967 Flywheel (w/ring gear)
78 650594 Nut, Flywheel
79 610906 Solid State Magneto (Incl. 158 thru 1 61)
80 650661 Screw, 1/4-20 x 3/4"
81 33479 Extension, Blower housing
82 30063 Screw, 1/4-20 x 1/2"
83 650751 Screw, 1/4-20 x 7/16"
84 33775A Blower Hsg.(Incl.218A,219)(For elec.s tarter)
85A 8274 Washer, Lock
85 8274 Washer, Lock
86A 650595 Screw, 5/16-24 x 3/8"
86 650595 Screw, 5/16-24 x 3/8"
87 650752 Screw, 1/4-20 x 7/16"
88 35475 Tube, Push rod
89 33481 * "O" Ring (Also Incl. in 251)
90 34754 Housing, Rocker arm
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OH120-175023C Page 4 of 9
Engine Parts List #1
Ref # Part Number Qty Description
91 33013 Cover, Starter bubble
92 650701 Screw, 8-18 x 7/16"
93 8345 Washer, Flat
94 33484 * "O" Ring (Also Incl. in 251)
95 650168 Washer, Flat
96 32610A Screw, 1/4-20 x 29/32"
97 33485 Arm, Rocker
98 33486 Ring, Retaining
99 650755 Screw, 1/4-20 x 3/4"
100 650864 Nut, Hex, 1/4-20
101 650756 Stud, Rocker arm
102 33487 * "O" Ring (Also Incl. in 251)
103 33488 Cover, Rocker arm
104 31958A * Gasket, Breather (Also Incl. in 251)
105 33489 Body Assy., Breather
106 33490 Tube, Breather
107 30102 * Screw, 10-32 x 5/8" (Also Incl. in 25 1)
108 650738 Screw, 1/4-20 x 5/8"
111 35471 * Gasket, Air cleaner
112 35472 Bracket, Air cleaner
114 650399 Screw, 10-32 x 5/8"
115 32008 Element, Air cleaner
116A 32810 Cover, Air cleaner
117 650513 Nut, Wing
119 31992 Spacer, Screen
120 33776 Screen, Pulley
122 650680 Screw, 1/4-20 x 1-1/2"
123 27070 Washer, Lock
127 32143 Nipple, Exhaust
146 32577 Cover, Cylinder NOTE: Determine the gap between the cover
and the machined surface on the cylinder, which can be
from .001" up to .007", in which case no shim gaskets will be
required. Use of gaskets must be limited to a combined total
of .010" thick. Steel spacersmust be used as required to eli
147 792028 Screw, 5/16-18 x 7/8"
150B 650399 Screw, 10-32 x 5/8"
152A 610965 Stator Plate Assy.
155 31971 * Gasket, Shim (.004/.005 thick) NOTE: Determine the gap
between the cover and the machined surface on the
cylinder, which can be from .001" up to .007", in which case
no shim gaskets will be required. Use of gaskets must be
limited to a combined total of .010" thick. Steel
spacersmust be used a
156 31972 * Gasket, Shim (.005/.007 thick) NOTE: Determine the gap
between the cover and the machined surface on the
cylinder, which can be from .001" up to .007", in which case
no shim gaskets will be required. Use of gaskets must be
limited to a combined total of .010" thick. Steel
spacersmust be used a
157 32031 * Spacer, Steel (.010 thick) NOTE: Determine the gap
between the cover and the machined surface on the
cylinder, which can be from .001" up to .007", in which case
no shim gaskets will be required. Use of gaskets must be
limited to a combined total of .010" thick. Steel
spacersmust be used as re
158 610118 Cover, Spark plug
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OH120-175023C Page 5 of 9
Engine Parts List #1
Ref # Part Number Qty Description
159 610750 Grommet, Lead wire
160 610408 Nut, 8-32
161 610908 Terminal, Female
164 33356 Terminal
165 650760 Screw, 8-32 x 3/8"
166 28545 Grommet, Plastic
189 33068 Dipstick (Incl. 190)
190 29985 "O" Ring
191 32352 Tube, Oil filler
192 29673 * Gasket, Oil filler tube
193 29443 Clip, Wire
244A 34768 Decal, Name
244B 31752 Decal, Air cleaner
244 34346 Decal, Instruction
247 Carburetor NOTE: This model was built and shipped without
a carburetor. (Refer to Division 5, Section D for breakdown)
250 33516G * Gasket Set (Incl. items marked *)
251 35075 "O" Ring Kit (Incl. Nos. items marked +)
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OH120-175023C Page 6 of 9
Engine Parts List #2
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OH120-175023C Page 7 of 9
Engine Parts List #2
Ref # Part Number Qty Description
39 650736 Screw, 10-16 x 3/8"
82 30063 Screw, 1/4-20 x 1/2"
126A 35731 Muffler (Incl. 126B)
141 Gear, Counterbalance weight (Straight teeth) (For
replacement see Ref. 132. Order correct kit for your
enginemodel number.)
153 792028 Screw, 5/16-18 x 7/8"(Use w/32817 str .motor)
153 650781 Screw,5/16-18 x 11/16"(Use w/33835 st r.motor)
209 730178 Ech.Adapter Kit (Incl.210 & 211)(As r equired)
210 34102B Gasket, Exhaust (Use as required)
211 30196 Screw, 5/16-18 x 3/4" (Use as require d)
238 730212 Adapter Plate Kit (Optional) NOTE: If you are having
mounting problems in using a HH100 thru0H180 inplace of a
large frame competitivebrand, we would like to call your
attention to 730212 adapter plate kit. The kit converts the
bottom mounting system found on HH100 thru 0H180 to a
top mounting sys
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OH120-175023C Page 8 of 9
Engine Parts List #3
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OH120-175023C Page 9 of 9
Engine Parts List #3
Ref # Part Number Qty Description
114 650399 Screw, 10-32 x 5/8"
115 32008 Element, Air cleaner
117 650513 Nut, Wing
119 31992 Spacer, Screen
122 650680 Screw, 1/4-20 x 1-1/2"
123 27070 Washer, Lock
143 29774 Fuel Line (Braided 8.25")(21 cm)(As r equired)
143 30705 Fuel Line (Braided 16")(41 cm)(As req uired)
143 30962 Fuel Line (Braided 32")(81 cm)(As req uired)
178 410144B Fuel Cap (White Plastic)(Std)(As requ ired)
178 34210 Fuel Cap (Red Plastic) (Spurt resistant, High profile) (Use as
required)
185 650488 Screw, 1/4-20 x 1-1/4"
186 650456 Nut, Lock
196 26460 Clamp, Fuel line (Use as required)
245 730134 Rewind Starter Kit (Incl.120A, 121, 122, 187, 188 & 248)
(Use as required)
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