2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 404Get this manual
REAR DRIVING MECHANISM Clean the mating surfaces of the gear caseCoat new O-ring with grease and install it into the groove in the gear caseO-RING
Install the final drive assembly onto the swingarmInstall four new nuts, and loosely tighten the nutsConnect the breather hose to the hose joint of the gear case
BREATHER HOSE
FINAL DRIVE ASSEMBLY
NUTS Coat new O-ring with grease and install it into the groove in the gear caseO-RING