2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 124Get this manual
FUEL SYSTEM ('04'05) Remove the boot, nut and spring from the SE valveCheck the SE valve face for scores, scratches or wearCheck the SE valve seat at the tip of the valve for stepped wearCheck the seal ring for deterioration, wear or damageBOOT NUT
SE VALVE