I have been reading about a snorkel kit on a 350 wolverine this man made one from pvc pipe i was wondering if he just used the hole where the factory snorkel is and how he done it or had to drill another hole.
Thanks

 

Usaually you just extending desisting breather tubes. "You tube" has many great videos on snorkeling a ATV.
Problem with some Yamahas is it odd ball breather tube that come out from the rear of the ATV.

 

The tube come of the top of the breather and rests on the gas tank under the seat

 

On a CVT ATV there will be 3 breather tubes. One for the air box (Carb) and two for the belt housing ,one is air intake the other is air exhaust.

Yours is the older 5 speed Wolverine so you just dealing with the air box.