2010 Arctic Cat DVX 300 / 300 Utility ATV Service Manual, Page 50Get this manual
10Remove the countershaft and driveshaft as an assembly
12To disassemble the driveshaft, use the following procedureARemove the thrust washer; then remove the reverse gear
11To disassemble the countershaft, use the following procedureARemove the thrust washer and high gear clutch dog
BRemove thrust washer and the lowreverse clutch dog