Prior to starting the engine, in what position should the engine control switch be positioned?

Prior to starting the engine, in what position should the engine control switch be positioned?

• A. Start
• B. Start/Stop/Isolate
• C. Stop
• D. Run

Answer: (B)

Before starting, the engine control switch should be in a position that energizes the start sequence while keeping safety options available. The Start/Stop/Isolate setting does exactly that: it connects the start and ignition circuits needed to initiate a safe, controlled start and provides an easy way to isolate the engine if a fault is detected. After the engine starts and is stable, you move to Run for normal operation. The other positions don’t set up the proper start sequence—Start alone may not include the necessary isolation, Stop would prevent starting, and Run is used during normal operation, not the pre-start setup.

Before starting, the engine control switch should be in a position that energizes the start sequence while keeping safety options available. The Start/Stop/Isolate setting does exactly that: it connects the start and ignition circuits needed to initiate a safe, controlled start and provides an easy way to isolate the engine if a fault is detected. After the engine starts and is stable, you move to Run for normal operation. The other positions don’t set up the proper start sequence—Start alone may not include the necessary isolation, Stop would prevent starting, and Run is used during normal operation, not the pre-start setup.