2008 Polaris ATV Sportsman 300 400 H.O. Service Manual, Page 157Get this manual
FINAL DRIVE 16Pull the strut assembly out and pull the drive-shaft out of the front bearing carrier17Remove both front drive shafts from the front gearcase18Remove the roll pin (spring pin) from the prop shaftUse the Roller Pin Removal Tool (PN 2872608)2
Disassembly
1Drain and properly dispose of used fluidRemove any metal particles from the drain plug magnetRemove the T30 Torx screws and output cover
319Remove bolts securing the bottom of the front gearcase housing to the frame20Remove the gearcase vent line21Remove the front gearcase from either side of the frame