2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 392Get this manual
REAR DRIVING MECHANISM INSPECTION Check the seal rubber for wear or damageCheck the splines of the drive shaft for wear or damageIf the splines are damaged, check the pinion and universal joint splines alsoTo remove the universal joint, remove the swingarm (page 15-9)SPLINES
SEAL RUBBER Turn the pinion joint and check that the pinion and ring gears turn smoothly and quietly without bindingIf the gears do not turn smoothly or quietly, the gears andor bearing may be damaged or faultyThey must be checked after disassembly; replace faulty parts assemblies as required