advance the throttle to wide open and point the nose of the plane straight up. If
>there is no change in RPMs, it is adjusted properly. If it speeds up
>and/or dies, it is too lean.
Actually, part of this statement is wrong.
You WANT the engine to speed up a little when you lift the nose; if it it stays at the same rpm, or slows down, or dies, it's too lean. (Because it's already at peak rpm. The engine will unload a bit in the air, so you don't want peak on the ground.) If the rpm increases you can try leaning it a bit more. If it doesn't, richen it about 400 rpm.
Dennis-