Interesting question, I assume you may be wondering what happens during start-up.
Here's the details of throttle position with the transmission in neutral (not the complete table):
View attachment 89573
It looks like we can get at most 12% throttle at 0 rpm (the table only goes down to 50 rpm).
I assume the throttle is left untouched (closed) during a normal start. I can't see the starting tables with the PV-3. Typically a bike will select a starting routine based on engine temperature and air intake temperature. You will get a fast idle if cold that settles down as the engine warms up.
If for some reason the engine gets flooded, I believe you should turn the throttle wide open. With the engine not running, this action will typically turn off the fuel injectors and open the throttle butterfly valves. This should clear the flooded condition. It also allows an engine compression check without pumping fuel into the engine (spark plugs are removed for a compression check).