ROCHESTER CARBURETORS Bulletin 9D-9 January 1952
	Page 15 ROCHESTER PRODUCTS, DIVISION OF GENERAL MOTORS, ROCHESTER, NEW YORK MODEL 4GC CARBURETOR ASSEMBLY THROTTLE BODY ASSEMBLY
	Secondary Throttle Shaft — Secondary Throttle Lever Retaining Screw and Washer	Primary Throttle , Shaft
		Secondary Throttle Actuating Lever Secondary Throttle Actuating Lever Return Spring and Retaining Screw-
	Secondary Throttle lever and Return Spring
	Secondary Throttle Lever Link Retaining Washer and Cotter Pins Figure 7-16
			Figure 7-17
	NOTE: Refer to Figure 7-16 for steps 1 through 7. 1.     Install secondary throttle lever return spring on secondary throttle shaft so that end hooks into hole in throttle body casting. 2.     Install secondary throttle lever on secondary throttle shaft. Then install secondary throttle lever realigning screw and washer. 3. With a piece of wire, wind up the secondary throt­tle lever return spring one complete turn. 4.     Install the secondary throttle lever link assembly and cotter pin to the secondary throttle lever. 5.     Install the secondary throttle actuating lever and override spring on the primary throttle shaft. Then install the secondary throttle lever link assembly into the secondary throttle actuating lever with a washer and cotter pin. 6. Install the shaft override spring retaining screw into the primary throttle shaft so that the hooked end of the spring stops against the retaining screw. 7. Hook the inner end of the override shaft spring onto the secondary throttle actuating lever. Refer to Figure 7-17 for proper assembly of throttle linkages. 8. Install the idle slop screw and spring into the throt­tle body casting. 9.     Install the fast idle screw and spring into the throt­tle lever. 10.   Install both idle adjusting needles and springs into the throttle body casting. 11. Place the throttle body gasket in position on the float bowl, with the bowl inverted on a flat sur­face. (Figure 7-18.) Be certain that all gasket holes are properly aligned. 12. Place Throttle Body in Position on float bowl. (Figure 7-19.) Attach with three 10-32 attaching screws and lock washers and one large 3/8-24 screw and lock washer.
			Figure 7-18
				3/8-24 ATTACHING SCREW
			Figure 7-19

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