how to start a 2015 570 that is flooded?

 

Take the spark plug out,have some shop towels or paper towels over the plug hole in case you have gas spray and keep the plug cap away.I'd have a new plug handy as the old one could be fouled.When trying to start don't touch the throttle. The early 550 and 850s were bad about fouling plugs if you ever touched the throttle until they warmed up a couple minutes.