2005 Polaris Sportsman 400/500 Service Manual, Page 197Get this manual
FINAL DRIVE with piece of wire9Pull both driveshafts from the front gearcaseReplace the circlip on the driveshaft end for reassembly10Remove the roller pin from the front prop shaftUse the Roller Pin Removal Tool (PN 2872608)11Remove bolts securing bottom of housing to frameBolts are accessible through the skid plateRemove vent lineRemove the front gearcase from right side of frameFront Gearcase Removal
CAUTION: Do not hang the caliper by the brake lineUse wire to hang the caliper to prevent possible damage to the brake line6Remove the front hub from the drive shaft7Remove cotter pin, lower ball joint nut and A-arm from ball joint