Automotive Carburetion Made Easy



	IMPORTANCE OF ADJUSTMENTS

	It is the purpose of this section to explain the importance of the various recommended carburetor adjustments. For specific dimensions and recommended gauges, see the Adjustment Bulletin for the particular carburetor being serviced.

	• ON THE BENCH		If any one carburetor adjustment is more important than the others, it is the float setting. This setting determines the rela-tionship between fuel level and the height to which fuel must rise to reach the discharge nozzle. This adjustment has a great effect on both performance and economy. IT MUST BE CORRECT.


	The float drop setting insures sufficient fuel for sustained high speed driving. On carburetors using a float balance spring, this setting has a definite effect on the normal fuel level, thereby making its accuracy essential. IT MUST BE CORRECT.

			Accelerator pump action is controlled com-pletely by throttle movement. Pump setting is made to assure proper relationship be-tween position of pump plunger and posi-tion of throttle valve. Improper adjustment can cause flat spots and hesitation. IT MUST BE CORRECT.

	The Choke Rod Setting plays an important part in proper fast idle speed during engine warm-up. When properly adjusted, it helps determine correct relations between choke valve opening and minimum throttle valve opening. If improperly adjusted, it can cause hard cold starting, rough idling, stalling and loading up. IT MUST BE CORRECT.

	11