The priming of a fuel-injected horizontally opposed engine is accomplished by placing the fuel control lever in which position?

In a fuel-injected horizontally opposed engine, priming is crucial for ensuring the engine starts efficiently, especially after it has been sitting for a period. When the fuel control lever is placed in the FULL-RICH position, it allows a higher volume of fuel to be injected into the engine. This creates a richer fuel mixture, which is necessary for a successful start, particularly in cold conditions or after a lengthy duration of inactivity.

By enriching the fuel mixture, the engine receives sufficient fuel to facilitate combustion even if the fuel lines have lost pressure or if the fuel has evaporated. This is especially important for fuel-injected engines, as they require the appropriate fuel-air mixture to start effectively.

The other positions do not provide the necessary fuel mixture required for priming. A LEAN position would result in insufficient fuel for starting, the OFF position completely cuts off fuel flow, and the RUN position is generally for operation rather than priming. Thus, positioning the fuel control lever in FULL-RICH is essential for effectively priming the engine and ensuring that it starts properly.