2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 334Get this manual
REAR DRIVING MECHANISM left shock absorber lower mounting bolt four left axle housing nuts (discard them) left axle housing O-ring LOWER MOUNTING BOLT NUTS
O-RING left side collar
LEFT AXLE HOUSING LEFT SIDE COLLAR
Remove the rear axle by driving the axle from the left side using rubber mallet