What should be the position of the fuel shutoff valve during restart?

What should be the position of the fuel shutoff valve during restart?

• A. ON
• B. OFF
• C. LEAN
• D. PENDING

Answer: (A)

Fuel must flow to the engine for a restart, so the fuel shutoff valve should be ON to allow fuel from the tanks to reach the engine. In the OFF position, fuel is blocked and the engine cannot restart. Lean is a mixture setting, not a valve position, and PENDING isn’t a valid valve state. ON is the correct position.

Fuel must flow to the engine for a restart, so the fuel shutoff valve should be ON to allow fuel from the tanks to reach the engine. In the OFF position, fuel is blocked and the engine cannot restart. Lean is a mixture setting, not a valve position, and PENDING isn’t a valid valve state. ON is the correct position.