2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 152Get this manual
FUEL SYSTEM (After '05) Check the float valve and valve seat for scoring, scratches, clogs or damageA worn or Check the tip of the float valve where it contacts the contaminated float valve seat for stepped wear or contamination
FLOAT VALVE VALVE SEAT
valve will not seat
properly and will eventually flood the Clean or replace them if necessarycarburetor
Remove the following:
main jet needle jet baffle plate starter jet slow jet