Fogging/Winterizing Mercury 9.9 4stroke 2008

[joefish24]

I'm new to winterizing and had a question regarding my Mercury 9.9 hp 4 stroke, 2008 model. I have changed the engine oil and lower unit lube already and now need to fog the motor. My question is i can't find where to spray the fog spray? It's supposed to be sprayed into the carburator while running until it dies? If so, how do you get access to the carb? I see an air filter as the only means of access. Also, I heard you are supposed to spray fog into the spark plug holes too? Is it necessary to change the plugs?

Could this be a Fuel injected engine (no carb?)

Thanks for the help!