Generac 4451 GT-990& GT-760Engine Page 1 – Drawing No. 0E8589E, Item Part No. Qty. Description

Section 7 — Exploded Views and Parts Lists

Commercial-Industrial-Residential Portable Generator System

GT-990 & GT-760 Engine (Page 1) – Drawing No. 0E8589E

ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION

1	0C5729	1	ASSEMBLY, CRANKCASE HOUSING
			WITH SLEEVE
2	0E9843	1	SEAL, 38 I.D. CRANKSHAFT
3	090388	3	SCREW, TAPTITE M6-1.0 X 12 BP
4	0C5372	1	ASSEMBLY, BREATHER
5	0C3005	1	GASKET, BREATHER COVER
6	0E3372B	1	SEPARATOR, OIL BREATHER
7	0D8067A	1	ASSEMBLY, HEAD #1
8	071983	4	RETAINER, PISTON PIN 20
9	0D5269	1	ROCKER, COVER
10	043790A	1	BARBED EL 90 3/8NPT X 3/8
11	0E2950	2	PISTON, LC (GT-990)
	0E2985	2	PISTON, HC (GT-760)
12	021533	2	SET, PISTON RING 90MM
13	0E1466	2	PIN PISTON
14	0D4041	1	ASSEMBLY, CAMSHAFT & GEAR
15	0D4788	2	PLUG STD PIPE 3/8 STEEL SQ HD
16	093064	1	ASSEMBLY, OIL FILL CAP
17	0C2977	1	GASKET, CRANK CASE
18	0C5943	1	SEAL, OIL PASSAGE
19	0E4357E	1	ASSEMBLY, CRANKSHAFT
			HORIZONTAL DIRECT DRIVE
			(GT-990)
	0E4356E	1	ASSEMBLY, CRANKSHAFT
			HORIZONTAL DIRECT DRIVE
			(GT-760)
20	0E3223	2	ASSEMBLY, CONNECTING ROD
			(GT-990)
	0E3222	2	ASSEMBLY, CONNECTING ROD
			(GT-760)
21	0D2157	2	SCREW SHC M6-1.0 X 50 G8.8
22	0E6098	1	SCREEN, OIL PICKUP
23	0D4123A	1	ASSEMBLY, OIL PUMP
24	078699E	2	SLEEVE, SEAMED DOWEL 10 DIA.
25	0C3011	2	COVER, OIL RELIEF
26	0C3009	2	SPRING, OIL RELIEF
27	0C3010	2	BALL, 1/2D OIL RELIEF
28	093873	2	WASHER, LOCK RIB M6
29	0C5315	1	GEROTOR, OUTER
30	0C5998	1	CLAMP, OIL TUBE
31	0D4497	1	PLUG-CRANKCASE GOVERNOR
			BORE
32	0C3971E	1	ASSEMBLY, DIPSTICK WITH
			HANDLE
33	0D3745	1	TUBE, DIPSTICK
34	0C3027	3	O-RING, OIL CLR
35	0E9842	1	SEAL, 42 I.D. CRANKSHAFT

36	0C5731	1	ASSEMBLY, HOUSING COVER
			WITH SLEEVE
37	0C3006	10	SCREW, HHFC M10-1.5 X 55
38	080318	8	SCREW HHFC M6-1.0 X 25
39	0C8808	2	HOOK, LIFTING
40	0C2981C	1	ROCKER, COVER
41	0C2979	2	GASKET, VALVE COVER
42	086515	8	KEEPER, VALVE SPRING
43	0D2274	4	RETAINER, VALVE SPRING
44	0D3867	4	SPRING, VALVE
45	078672	2	SEAL, VALVE STEM D7
46	0C5371	4	WASHER, VALVE SPRING
47	072694	4	STUD, ROCKER ARM PIVOT
48	0C3027	2	O-RING, 3/8" X 1/2"
49	0D5313	4	ROCKER ARM
50	0D3998	4	NUT, HEX M8-1.0 GB YELLOW
			CHROME
51	0D6024	2	PLATE, PUSH ROD GUIDE
52	0C2976	12	SCREW HHFC M8-1.25 X 65
53	086516	2	VALVE, EXHAUST
54	0C2229	2	VALVE, INTAKE
55	083897	4	TAPPET, SOLID
56	0D8067B	1	ASSEMBLY, HEAD #2
57	0D9853D	4	PUSHROD 147
58	0C2978	2	GASKET, HEAD
59	0D6008	1	KIT GEAR COVER
60	0D4010	1	KIT GASKET
61	0D6007	1	KIT PISTON & RINGS
62	0D4012	1	KIT BREATHER ASSEMBLY
63	0D8675A	1	KIT HEAD ASSEMBLY CYLINDER 1
64	0D8675B	1	KIT HEAD ASSEMBLY CYLINDER 2
65	0D4015	1	KIT OIL RELIEF
Item 59 (Kit) includes items 3, 30, 35, 65
Item 60 (Kit) includes items 2, 5, 17, 18, 34, 35, 40, 57, 139, 153.
Item 61 (Kit) includes items 8, 11, 12, 13
Item 62 (Kit) includes items 4, 5, 6
Item 63 (Kit) includes items 7, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52,
			53, 54, 57, 58
Item 64 (Kit) includes items 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53,
			54, 56, 57, 58
Item 65 (Kit) includes items 25, 26, 27

25