2007-2009 Honda TRX300EX TRX300X service manual, Page 91Get this manual
FUEL SYSTEM CARBURETOR CLEANING
Remove the strainer screen from the fuel hose jointWash the strainer screen thoroughly in non-flammable or high flash point solvent until all accumulated dirt has been removed Blow dry it with compressed air to clean completely
Remove the followingthrottle valve (page 5-10) accelerator pump (page 5-11) float, all jets and pilot screw (page 5-12)