2008 Arctic Cat DVX 400 ATV Service Manual, Page 60Get this manual
6Remove the remaining 5th drive washer from the countershaftAssembling 1Install the first 5th drive washer onto the countershaft2Install the 5th drive gear; then install the second 5th drive washer onto the countershaftSecure with the circlip
5Install the 2nd drive gear and washer onto the countershaft
NOTE: The countershaft is now completely assembled for installation