1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 58Get this manual
AIR FILTER CLEANING 1Remove: Seat Air filter case cover Air filter assembly CD
NOTE:Turn the hook 90 clockwise and remove the air filter from the guide
NOTE:Each time filter maintenance is performed, check the air inlet to the filter case for obstructionscheck the air cleaner joint rubber to the carburetor and manifold fittings for an air-tight sealTighten all fittings thoroughly to avoid the possibility of unfiltered air entering the engine