2004 John Deer Buck Utility ATV 500, 500EX and 500EXT Service Manual, Page 126Get this manual
Remove shift fork no18 then pull shift drum no19Pull all gears and shafts, at the same time P0008419
V01E0GA
V01e0ga2.EPS
Position main shaft assembly on rear output shaft so that gears will engage in their proper locationPush in both shafts assembly until they come in contact with reverse idler gear