1999-2004 Honda TRX400EX FourTrax Service Manual, Page 78Get this manual
FUEL SYSTEM
AIR CLEANER HOUSING
REMOVALINSTALLATION
Remove the seatrear fender assembly (page 2-2)Disconnect the crankcase breather tube and remove the crankcase breather storage tank from the air cleaner connecting tubeRemove the mounting boltLoosen the connecting tube band and intake duct band screwsRemove the air cleaner housing from the carburetor and inlet ductInstallation is in the reverse order of removalNOTE: Apply oil the mating surface of the intake duct and housing When installing the crankcase breather storage tank, align its tab with the connecting tube slit