Is that a request for help and assistance? Not exactly the best “Hello, I’m a new guy…” intro there friend…
Insisting on a “Direct measurement from a machine or quoted references ONLY.” on a mechanism you obviously know nothing about is ridiculous and offensive to those of us who do know.
GuzziTech is a community. We are all enthusiasts, many with excellent experience and know how and several of us are professional mechanics who donate our skills and knowledge to grateful members and guests alike.
We are not your servants, waiting here to fill your order and take your edicts, especially when you are coming with your hat in your hand for info. I suggest you reconsider your presentation and manners if you intend to hang around.
Niceness counts around here.
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To answer your question, there is no fixed setting.
It is not a choke and it does not alter air:fuel ratios at all.
It is a “fast idle” lever going all the way back to the early fuel injected Californias. It’s the same on my 1997 V-10 Centauro. It was the system used before stepper motors came into use to regulate idle speeds.
It only emulates you holding the throttle slightly open to raise the rpm’s during warm up. You set it on slightly, start the bike, adjust it to obtain a nice idle speed, and drive off. About 1-2 km down the road, when the engine is warm enough to maintain a stable idle on its own, you move it to the off position.
As far as setting it up…There should be free play in it when it is off so that turning the handlebars full left or right, causes no raise in the idle and although V700Steve (another professional Moto Guzzi mechanic) and John Zibel (the most experienced Moto Guzzi mechanic you could hope for) have already told you in your first post on this same question, a max of 3200 rom at full on when warm, this is not a critical setting at all. It could easily be 2275 or 2750 or 2913 for all intended purposes because IT DOESN’T MATTER AT ALL!
The handlebar lever is just adjusted to advance the throttle a little bit to keep a nice strong idle until the engine is sufficiently warmed up. Therefore its design is such that it has “infinite adjustment” which you use with your ear to set it to where the engine idle sounds stable and strong even though the engine is cold, and then you ride away. Like I said, down the road, when it is warmed up, you just turn the lever all the way off again. When the engine is already warm you will not use it at all.