1999-2004 Honda TRX400EX FourTrax Service Manual, Page 66Get this manual
FUEL SYSTEM
CARBURETOR REMOVAL
Remove the fuel tank (page 2-41Place and approved fuel container under the drain tubeLoosen the drain screw and drain the carburetorRemove the air vent tube from the heat protector and the fuel from the heat protector rubberDisconnect the drain tube from the carburetorLoosen the connecting tube band and insulator band screwsRelease the carburetor from the connecting tube and
AIR VENTTUBE