Which sequence correctly describes clearing a flooded float-type carburetor engine?

Which sequence correctly describes clearing a flooded float-type carburetor engine?

• A. Crank the engine with the starter or by hand, with the mixture control in cutoff, ignition switch off, and the throttle fully open, until the fuel charge has been cleared
• B. Crank the engine with the mixture rich and ignition on
• C. Crank with the throttle at idle and ignition off
• D. Stop and wait 3 minutes before trying again

Answer: (A)

Flooded float-type carburetor engines are overfilled with fuel, so the goal is to purge that excess without igniting it. The best way to do this is to crank the engine with the starter or by hand while the ignition is off and the mixture control in cutoff. Keeping the throttle fully open helps draw a strong air flow through the carburetor and cylinders, pushing the excess fuel out rather than letting it pool. You continue cranking until the fuel charge has been cleared, then recompose the starting procedure (set the mixture for normal starting and apply ignition) to actually start the engine.

Flooded float-type carburetor engines are overfilled with fuel, so the goal is to purge that excess without igniting it. The best way to do this is to crank the engine with the starter or by hand while the ignition is off and the mixture control in cutoff. Keeping the throttle fully open helps draw a strong air flow through the carburetor and cylinders, pushing the excess fuel out rather than letting it pool. You continue cranking until the fuel charge has been cleared, then recompose the starting procedure (set the mixture for normal starting and apply ignition) to actually start the engine.