2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 174Get this manual
COOLING SYSTEM Loosen the band screws and disconnect the upper,OAFMA-T-OD UOCC and lower radiator hoses from the radiatorUPPER E
LOWER RADIATOR HOSE '04'05: Remove the handlebar switch 3P and 4P connectors from the stays on the frameRemove the two bolts and air guide from the radiator