2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 55Get this manual
GENERAL INFORMATION SERVICING THE HONDA U .S.AOnly aintenance, replacem ent repair of the emission control devices and systems may be performed by any ATV repair establishment or individual using parts that are "certifiedto EPA stand ard s
PROHIBITED ACTIONS
The following prohibitions apply to everyone with respect to the engine's emission contfol systemYou may nOI remove or disable any device or element of design that may affect an engine's emission levelsThis restriction applies before and after the engine in placed in service
Vehicles that are used only for competition are exempt from this prohibition