2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 189Get this manual
TRANSMISSION 12Inspect reverse shaft gear, sprocket, needle bearings and engagement dog for wear or damageReplace if necessaryReverse Shaft Assembly Reverse Shaft Engagement Dog Gear Needle Bearing ERings Sprocket Needle Bearing NOTE: Gear cogs face toward engagement dog13Inspect input shaft, gear, and bearingReplace if necessary14Remove front output shaft cover and ring gear assembly17Remove front drive input shaft bearing retainer plate