Briggs & Stratton Carburetor Crossover Flo-Jet

Figure 4-16 is a sectional view of the crossover Flo-Jet, as used on horizontal crankshaft Model 253400 and 255400 engines. This carburetor includes a vacuum-operated fuel pump, illustrated in the next drawing.

Needle and seat renewal and float adjustment procedures are as described for the two-piece Flo-Jet. Figure 4-17 illustrates the assembly sequence for the double-diaphragm fuel pump, normally serviced with a rebuild kit that contains springs and “soft” parts.

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