FUEL EXHAUST CARBURETION C171 CHEVROLET 1979 HOLLEY 2BC Continued See Model Reference for Application GROUP DESCRIPTION OTV 1 2 3 4 5 3 790 RESTRICTION high speed bleed prim I 1 5259093 5259093 5259093 5259093 5259093 3 790 RESTRICTION high speed bleed sec 1 14009789 14009789 14009789 14009789 14009789 3 752 RETAINER choke shaft Ivr 4 2 14012903 14012903 14012903 14012903 14012903 3 755 RETAINER choke spring 1 5259044 5259044 5259044 5259044 5259044 3 755 RETAINER diaphragm ring 1 14012902 14012902 14012902 14012902 14012902 3 752 RETAINER fast idle adj rod 1 W W W W 3 752 ROD choke 1 14012910 14012910 14012910 14012910 14012910 3 758 ROD fast idle adj 1 14012909 14012909 14012909 14012909 14012909 3 752 RING thermo hsg ret 1 549254 549254 549254 549254 549254 3 751 SCREW choke plate 4 335088 335088 335088 335088 335388 3 841 SCREW diaphragm adj 1 r A 3 755 SCREW fast idle adj 1 10003081 10003081 10003081 10003081 10003081 3 755 SCREW idle adj sec 4 1 350950 350950 350950 350950 350950 3 755 SCREW idle stop 1 335097 335097 335097 335097 335097 3 825 SCREW pump discharge 1 14009783 14009783 14009783 14009783 14009783 3 752 SCREW thermo hsg ret ring 3 549255 549255 549255 549255 549255 3 751 SCREW throttle Ivr 1 335087 335087 W W 335087 3 730 SCREW L w air horn 5 335094 335094 335094 335094 335094 3 751 SCREW 81 L w choke hsg 4 2 335092 335092 335092 335092 335092 3 751 SCREW 81 L w choke hsg 1 335098 335098 335098 335098 335098 3 758 SCREW 81 L w diaphragm cover 4 3 335091 335091 335091 335091 335091 3 858 SCREW 81 L w econoIr1izer 3 2285812 2285812 2285812 2285812 2285512 3 757 SCREW 81 L w fast idle adj Ivr 4 1 W W 3 842 SCREW L w pump cover 4 335098 335098 335098 335098 335098 3 842 SCREW 81 L w solenoid 3 335098 335098 335098 335098 335098 3 750 SEAL choke hsg O ring 4 1 374833 374833 374833 374833 374833 3 752 SEAL choke rod 1 374752 374752 374752 374752 374752 3 755 SEAL diaphragm 4 1 W W W W W 3 820 SEAL H C valve 1 W r7 W 3 858 SEAL O ring I 704344 704344 704344 704344 704344 3 752 SHAFT 81 LEVER choke 1 14009780 14009780 14009780 14009780 14009780 3 752 SHAFT LEVER choke hsg 1 374792 374792 374792 374792 374792 3 440 SOLENOID E A V 1 549244 549244 549244 549244 549244 3 755 SOLENOID BRACKET Idle 1 rrvg W 3 755 SPRING diaphragm l 10000704 10000704 10000704 10000704 10000704 3 841 SPRING diaphragm return 1 345545 345545 345545 345545 345545 3 757 SPRING fast idle adj screw 1 374830 374830 374830 374830 374830 3 755 SPRING fast idle cam 1 14012905 14012905 14012905 14012905 14012905 3 740 SPRING fuel inlet filter 1 374740 374740 374740 374740 374740 3 755 SPRING idle adj needle 1 14012905 14012905 14012905 14012905 14012905 3 755 SPRING idle stop screw 1 W W W W W 3 755 SPRING pump return 1 335130 335130 335130 335130 335130 3 751 SPRING throttle Ivr 1 14012944 14012944 W W 14012944 3 753 SPRING throttle ret prim 1 WWWW W 3 750 THERMOSTAT 81 CAP 1 14012911 14012911 14012911 14012911 14012911 3 785 TUBE main well prim 1 14009785 14009785 14009785 14009785 14009785 3 785 TUBE main well sec 1 14009784 14009784 14009784 14009784 14009784 3 859 VALVE main feedback 1 W W W 3 792 VALVE main fuel metering 1 V W W W W 3 858 VALVE power 1 335113 335113 335113 335113 335113 3 755 WASHER diaphragm WI W W W W 3 755 WASHER diaphragm seal 1 W W W W W 3 758 WASHER fast Idle adj Ivr 1 5259098 5259098 5259098 5259098 5259098 3 752 WASHER fast idle adj spring 1 W W W W 3 752 WASHER oper 81 Ivr sec 1 W W W W W 3 752 WASHER shaft leveling 1 W W W W W W WWWWAREIIOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS c0E1PoI1ATI0NWcIIEvI1oLETWW10 WW WW REV 5 81 3 117 c 3 000 GROIJP