2004 John Deer Buck Utility ATV 500, 500EX and 500EXT Service Manual, Page 200Get this manual
With vehicle on level surface, check oil level by removing filler plugOil level must reach the lower edgeAdd oil if necessaryRefer to "Specifications" section for capacity and recommended oil Place vehicle on level surfaceSet transmission in park positionLift LH side of vehicleClean drain plug areaPlace drain pan under differential drain plug areaRemove drain plugUnscrew filler plugP0008376
Pull differential forward then separate propeller shaft no16 from differential and engine
Check propeller shaft for wear or damage, replace if necessaryInspect propeller shaft splines at both ends