A I I GMO3 147 I I 1985 86 J THROTTLE BODY TBI MODEL 500 1 SCREW ASSEMBLY Fuel Meter Cover Attaching Long 9 11 N S 2 SCREW ASSEMBLY Fuel Meter Cover Attaching Short 9 11 N S 3 FUEL METER Cover AssembIy 10 11 N S r 4 GASKET Fuel Meter Cover 2 4 1 1 12 N S 5 GASKET Fuel Meter Outlet 4 11 12 I A N S I 6 SEAL Pressure Regulator 2 4 11 1 2 I I N S 7 I PRESSURE REGULATOR 10 11 f N S 10 INJECTOR Fuel 4 11 N S 11 FILTER Fuel Injector Inlet 4 1 1 12 I N S y 12 O RING Fuel Injector Lower 2 4 11 12 N S 13 O RING Fuel Injector Upper 2 4 11 12 I N S 14 WASHER Fuel njector f2 4 11 12 2 N S 20 SCREW ASSEMBLY Fuel Meter Body T B Attaching 5 9 N S 21 FUEL METER BODY ASSEMBLY 3 11 I N S 22 GASKET Throttle Body to Fuel Meter B o ly 2 1 1 N S 23 GASKET Air Fi ter 2 3 403 30 O RING Fuel Return Line 3 163 31 NUT Fuel Outlet 8 N S 33 SEAL Fuel Nut 8 1 1 N S 34 GASKET TBI Fuel Feed Pipe I I g 3 163 35 GASKET TBI Fuel Feed Pipe Same as 34 3 163 50 SCREW TPS Lever Attaching 9 N S t 51 LEVER TPS 9 N S 52 SCREW ASSEMBLY TPS Attaching 6 9 N S 54 PROTECTIVE RETAINER TPS 5 N S 55 RETAINER TPS Attaching Screw 5 6 N S 58 SENSOR Throttle P0sition 6 3 764 60 PLUG Idle Stop Screw 9 N S 61 SCREW ASSEMBLY Idle Stop 9 N S y I 62 SPRING Idle Stop Screw 9 N S 65 THROTTLE BODY ASSEMBLY 3 725 70 GASKET FIange 2 N S 75 VALVE ASSEMBLY Idle Air Control 7 N S 2 76 GASKET ldIe Air Control Valve 2 7 N S 77 BOLT Fuel Feed Pipe 3 162 A 78 PIPE TBI Fuel Feed 3 163 For Part Numbers Refer To Chart At End Of Group 3 Of The Parts Catalog Group 3 725 THROTTLE BODY INJECTION UNIT Complete Assembly Plus Air Cleaner Flange Gaskets NOTE 2 Group 3 724 GASKET KIT lncls 4 6 12 13 14 22 23 30 70 76 NOTE 3 Group 3 734 FUEL METER BODY KIT Incls 21 NOTE 4 Group 3 774 FUEL INJECTOR KIT IncIs 4 5 6 10 11 12 13 14 NOTE 5 Group 3 729 BODY KIT Throttle lncls 20 54 55 NOTE 6 Group 3 764 SENSOR KIT Throttle Position Incls 52 55 58 NOTE 7 Group 3 820 CONTROL K T Idle Air Valve Incls 75 76 NOTE 8 Group 3 724 FUEL INLET OUTLET KIT Incls 31 33 NOTE 9 Group 3 724 FASTENER ASSORT KIT lncls 12 20 50 51 52 60 61 62 I NOTE 10 Group 3 734 FUEL METER COVER KIT lncls 3 7 NOTE 11 Group 3 734 FUEL METER KIT Incls 1 2 3 4 5 6 7 10 11 12 13 14 21 22 33 l NOTE 12 Group 3 774 GASKET FILTER KIT Fuel Meter Incls 4 5 6 11 12 13 14 I 1989 GENERAL MOTORS SERVICE PARTS OPERATIONS BUlCK 44J 1 10 89 3 s 3 000 GROUP