My Piaggio has a fuel neck restriction thing added to the fill neck....this green thing.
Noticed my new lawn mower has the same thing.
Prevents me from watching the fuel level with a flashlight as I refuel - being careful not to have the fuel over flow.
But I also noticed this little tab down there - that lets me gently rest the gas pump nozzle tip on it as I fuel up.
I fill slowly and the auto-off stops me from overfilling. My owner's manual states that overfilling can let the gasoline into the evap. system - causing possible poor running ---and hard starting for certain.
EPA guys are staying a step ahead of me, again. (although I've never overfilled my LIKE200i in 4 years)
Stig