2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 103Get this manual
LUBRICATION SYSTEM Remove the five bolts and oil tankRemove the O-rings and collarBOLTS
OIL TANK Remove the five bolts from the front oil tankFRONT OIL TANK
BOLTS Remove the seven bolts and remove the rear oil tank from the front oil tankREAR OIL TANK