2001-2003 Honda TRX500FA Factory Service Manual, Page 62Get this manual
MAINTENANCE
ENGINE IDLE SPEED
Inspect and adj ust the id le speed after all other engi ne ma intenance items have been performed and are ith in spec if icationsEng ine must be warm for accurate adjustmentTen mi nutes of sto p-and -go rid ing is sufficient
Remove the seat (page 23)
Connect tachom eterWarm up the engine, shift he transmission int neutral and place he vehicle on lev el surfaceCheck the idl sp eed IDLE SPEED: 1,400