Home > Parts Catalog > Heaters > A.O. Smith > SPO-8 & SPO-11 Series 770-781

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  The key number refers to the number on the schematic above.

Key # - Item Name	Item #	Price	Qty
1 - Baffle, flue, SPO-8	68047-1	items to be purchased locally
1 - Baffle, flue, SPO-11	68047-3	Obsolete
2 - Base, jacket, SPO-8	68160-700	Obsolete
2 - Base, jacket, SPO-11	68547-702	Obsolete
3 - Bracket, gas valve, SPO-8	77892	Obsolete
3 - Bracket, gas valve, SPO-11	77985	Obsolete
4 - Bracket, main burner, SPO-11	69913	Obsolete
5 - Bolt, loop	29511	Obsolete
6 - Bolt, special	20093-6	Obsolete
7 - Burner, main (natural & propane gas), SPO-8	39199	Obsolete
7 - Burner, main (natural & propane gas), SPO-11	68665-4
8 - Burner, pilot: natural gas, SPO-8	23921	$14.73	QTY
8 - Burner, pilot: natural gas, SPO-11	68599	Use 96666
8 - Burner, pilot: propane gas, SPO-8	23922
8 - Burner, pilot: propane gas, SPO-11	68599-1	Obsolete
8A - Catch, door (series 780 & 781 only)	28666	Obsolete
9 - Cap, flue	68962-700	Obsolete
10 - Clamp, hose, series 770 & 771	77866	Obsolete
10 - Clamp, hose, series 780 & 781	42973	Obsolete
11 - Clip, tubing, SPO-11 only	95999	Obsolete
12 - Collar, pipe, SPO-11 only	20172-14	Obsolete
13 - Collector, flue	99984-504	Obsolete
14 - Connector, SPO-11 only	97946	Obsolete
15 - Control, limit (protector switch), series 770 & 771	77920	Obsolete
15 - Control, limit (protector switch), series 780 & 781, SPO-8	77920	Obsolete
15 - Control, limit (protector switch), series 780 & 781, SPO-11	77920-1	Obsolete
16 - Cover, control, series 770 & 771, SPO-8	68959-705	Obsolete
16 - Cover, control, series 770 & 771, SPO-11	68959-706	Obsolete
16 - Cover, control, series 780 & 781, SPO-8	42970-700	Obsolete
16 - Cover, control, series 780 & 781, SPO-1 1	42970-701	Obsolete
17 - Cover, element	42637	Obsolete
17A - Cover, front - E.C.O. (Series 780 & 781 only), SPO-11	29316-705	Obsolete
18 - Cover, top	68152-704	Obsolete
19 - Decal, instruction, natural gas, SPO-8	42898	Obsolete
19 - Decal, instruction, natural gas, SPO-11	42904	Obsolete
19 - Decal, instruction, propane gas, SPO-8	42897	Obsolete
19 - Decal, instruction, propane gas, SPO-11	42903	Obsolete
20 - Decal, outdoor, SPO-8	69932	Obsolete
20 - Decal, outdoor, SPO-11	69906	Obsolete
21 - Decal, relief valve	98987	Obsolete
22 - Decal, water inlet	94518	Obsolete
23 - Decal, water outlet	94519	Obsolete
24 - Door, inner, SPO-8	38357	Obsolete
24 - Door, inner, SPO-11	76057-2	Obsolete
25 - Grommet	77915	Obsolete
25A - Handle, door (series 780 & 781 only)	28639	Obsolete
26 - Hood, draft	68955-701	Obsolete
27 - Insulation	34000-137	Obsolete
28 - Insulator	25241-2	Obsolete
29 - Jacket, outer, series 770 & 771, SPO-8	77894-700	Obsolete
29 - Jacket, outer, series 770 & 771, SPO-11	77921-700
29 - Jacket, outer, series 780 & 781, SPO-8	42971-700	Obsolete
29 - Jacket, outer, series 780 & 781, SPO-8	42986-700	Obsolete
30 - Nut, Lock, SPO-11 only	1455	Obsolete
31 - Orifice, main burner, outdoor location natural gas, SPO-8	29366-17	Obsolete
31 - Orifice, main burner, outdoor location natural gas, SPO-11	2869-204	Obsolete
31 - Orifice, main burner, outdoor location propane gas, SPO-8.	29366-38	Obsolete
31 - Orifice, main burner, outdoor location propane gas, SPO-11	2869-116	Obsolete
31 - Orifice, main burner, indoor location natural gas, SPO-8	29366-22	Obsolete
31 - Orifice, main burner, indoor location natural gas, SPO-11	2869-204	Obsolete
31 - Orifice, main burner, indoor location propane gas, SPO-8	29366-42	Obsolete
31 - Orifice, main burner, indoor location propane gas, SPO-11	2869-116	Obsolete
32 - Orifice, pilot burner, natural gas, SPO-8	23923
32 - Orifice, pilot burner, natural gas, SPO-11	8989	Obsolete
32 - Orifice, pilot burner, propane gas, SPO-8	23924
32 - Orifice, pilot burner, propane gas, SPO-11	8991	Obsolete
33 - Plate, instruction, SPO-11 only	97968	Obsolete
34 - Plate, warning, SPO-8 only	76126	Obsolete
35 - Plug, pipe, SPO-11 only	77984	Obsolete
36 - Port, observation	98760-2	Obsolete
37 - Retainer, flame, SPO-11 only	93046	Obsolete
38 - Ring, base	68090-700	Obsolete
39 - Ring, retaining, SPO-11 only	95156	Obsolete
40 - Rod, anode	29109-19	Obsolete
41 - Rod, flame spreader, SPO-11 only	95137	Obsolete
42 - Shield, pilot SPO-11 only	42884	Obsolete
43 - Shield, radiation, SPO-8	38383-1	Obsolete
43 - Shield, radiation, SPO-11	68965	Obsolete
44 - Shield, skirt ring, SPO-11 only	69802-1	Obsolete
45 - Shield, wind (Series 770 & 771 only), SPO-11 only	42885	Obsolete
46 - Shutter, air, SPO-11 only	95100	Obsolete
47 - Spreader, flame - lower, SPO-11 only	95091	Obsolete
48 - Spreader, flame - upper, SPO-11 only	95090	Obsolete
48A - Strike, door (Series 780 & 781 only)	28639	Obsolete
49 - Thermocouple, SPO-8	35498
49 - Thermocouple, SPO-11	32536-6
50 - Tube, main burner, series 770 & 771, SPO-8	77895	Obsolete
50 - Tube, main burner, series 770 & 771, SPO-11	99586	Obsolete
50 - Tube, main burner, series 780 & 781, SPO-8	42967	Obsolete
50 - Tube, main burner, series 780 & 781, SPO-11	99586	Obsolete
51 - Tubing, 1/8"x20" w/fittings (usertocut), SPO-8"	23925	Obsolete
51 - 1/8" x 36" (user to cut), SPO-11"	97364-36
52 - Tubing, 1/4" x 60" with fittings (user to cut), SPO-11")	1417-60	Obsolete
53 - Union, reducing, 1/4" x 1/8", SPO-11"	98823	Obsolete
54 - Valve, drain	35472-10	Obsolete
55 - Valve, gas control, natural gas 1/2" (Includes Item 17), SPO-8"	426183	Obsolete
55 - Valve, gas control, natural gas 1/2" (Includes Item 17), SPO-11"	42618-2	Obsolete
55 - Valve, gas control, propane gas 1/2" (Includes Item 17, SPO-8"	42618-1	Obsolete
55 - Valve, gas control, propane gas 1/2" (Includes Item 17, SPO-11"	42618-3	Obsolete
56 - Standard hardware	-	-

  The key number refers to the number on the schematic above.