2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 145Get this manual
FUEL SYSTEM (After '05) Remove the mounting bolts, air cleaner housing guard (U.S.Atype only) and the air cleaner housing from the frameMOUNTING BOLTS
AIR CLEANER HOUSING GUARD (U.S.Atype only)
INSTALLATION
Installation is in the reverse order of removalU.S.Atype only:
Install the air cleaner housing guard by aligning its tabs with the housing grooves