2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 174Get this manual
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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