Operation

Fuel Supply System, Figure 3-65

Fuel under pressure enters the float chamber througn the fuel inlet and fuel valve (needle and seat). The fuel level in the bowl is automatically maintained by the float which opens and closes the needle valve to supply the varying fuel flow demands of the engine as shown in Figure 3-65. Aclip attached to the end of the needle valve engages a tab of the float assembly.

Accelerating system, Figure 3-67

The accelerating pump controls the amount of additional fuel that is discharged into the air stream upon sudden throttle opening.

The accelerating system consists of a pump assembly, accelerating jet, a check valve and the mechanical linkage that connects to the throttle shaft.

Figure 3-67. Fuel Supply and Accelerating Systems
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