2011 Polaris Ranger RZR ATV Service Manual, Page 286Get this manual
FINAL DRIVE 7Pull the rear gearcase towards the rear of the vehicle to disengage it from the transmission
NOTE: If the splined coupler doesn't slide off the input shaft on the rear gearcase, use screwdriver to hold back the coupler while pulling the rear gearcase back further to disengage it8Remove the vent line and lift the rear gearcase upward and on its side to remove it from the vehicle
Gearcase Disassembly