ABC's of Carburetion



	IMPORTANT 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 relationship 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 normal fuel level, making its accuracy essential. 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,	The unloader adjustment is made to prevent loading up on a wide open throttle acceleration during the warm-up period. This is accomplished by the throttle movement mechanically forcing the choke valve partially open to admit more air. If improperly adjusted, excessive richness and loading may result. IT MUST BE CORRECT.

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