2011 Arctic Cat 400 TRV ATV Service Manual, Page 59Get this manual
COUNTERSHAFT
CAUTION
When disassembling the countershaft, care must be taken to note the direction each major component (dog, gear) facesIf major component is installed facing the wrong direction, transmission damage may occur andor the transmission will malfunctionIn either case, complete disassembly and assembly will be required
Disassembling
ATV-1074
3Zero the indicator and rotate the crankshaft slowly
1Remove the reverse driven gear dog; then remove the circlip securing the reverse driven gear
CAUTION
Care should be taken to support the connecting rod when rotating the crankshaft