2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 144Get this manual

FUEL SYSTEM (After '05)
AIR CLEANER HOUSING
REMOVAL
Remove the fuel tank (page 3-9)Disconnect the crankcase breather hose from the 3way joint

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives