2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 120Get this manual
FUEL SYSTEM ('04'05)
AIR CLEANER HOUSING
REMOVALINSTALLATION
Remove the fuel tank (page 3-9)Remove the two trim clips and heat guard rubberHEAT GUARD RUBBER
TRIM CLIPS Disconnect the crankcase breather hose from the 3way jointRemove the breather hose from the clampsBREATHER HOSE