nac 12 non starter

[Malleon]

I will look out for you both; BEWARE the Spy in the Sky (a black and yellow jellyCOPter), and enjoy the trip!
Best regards.

[bigwol]

The ECO-2 has a three position, centre OFF, with reserve and main either side. I've offered to send scan of appropriate manual page via e-mail

Yep same as my experience, however having checked with someone who knows far more about modern bikes than I apparently if it's a vacuum tap with reserve - only allows fuel to flow when the engine is running and a vacuum from the inlet manifold - then centre horizontal position is "prime" so that if the carbs have been drained you don't waste battery power cranking it over to fill the float bowls.
As Bunners said, you learn something every day! (and explains the flooding problem he had)