2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 107Get this manual
LUBRICATION SYSTEM Remove the O-rings
DISASSEMBLY
Oil pump body may pop out by the spring force
Remove the three bolts and oil pump body C
OIL PUMP BODY Remove the spring seat, spring and relief valveCheck the valve for wear, sticking or other damageCheck the spring for fatigue or damageRemove outer, inner rotors and drive pinRemove the oil pump spacerSPRING SEATSPRING