Need some snorkel help

Hey everyone im new to this site, and i have a question about snorkeling my 09 grizzly 550, what do i all have to seal up on it so i can go up to the handles without flooding it or causing damage to it? Im just about done snorkeling the cvt before it started raining, im using a 3inch-1.5inch pvc reducer then 1.5inch all the way up to the plastic infront of the handle bars, and im doing the 2-1.5 inch intakes, and 1 more question, were should i put the breather tubes? In the snorkel itself? And theres a tube that goes from gas tank to a little device (need to no what that is i havnt see it on any of my older bikes) down to what i assume is a funnel down to the ground.

So the questions are -what do i seal
-were to pit breathers
-what is the little device off the gas breather

Thanks for your replies in advance your really helping me out

Need some snorkel help

Hey everyone im new to this site, and i have a question about snorkeling my 09 grizzly 550, what do i all have to seal up on it so i can go up to the handles without flooding it or causing damage to it? Im just about done snorkeling the cvt before it started raining, im using a 3inch-1.5inch pvc reducer then 1.5inch all the way up to the plastic infront of the handle bars, and im doing the 2-1.5 inch intakes, and 1 more question, were should i put the breather tubes? In the snorkel itself? And theres a tube that goes from gas tank to a little device (need to no what that is i havnt see it on any of my older bikes) down to what i assume is a funnel down to the ground.

So the questions are -what do i seal
-were to pit breathers
-what is the little device off the gas breather

Thanks for your replies in advance your really helping me out