Thanks for the replies! I'm a newbie to powered two wheels so excuse me if I ask "ignorant" questions
What would be considered "overfilling"? The way I typically fill the fuel tank for my BV 250 is in the following manner: I insert the fuel nozzle halfway into the tank, not all the way. Then holding the nozzle at that midway position, I slow engage the switch to get the fuel going. When it automatically clicks off, I pull out the nozzle and "call it a day". My concern would be whether the "midway nozzle" thing would be overfilling the tank or not.