2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 181Get this manual
CLUTCHGEARSHIFT LINKAGE Hold the pressure plate with the special 1001 and tighten the lock nut
TOOL: Clutch center holder
07GMB KT70101
TORQUE: 79 N'm (81 kgfm58 Ibfftl
Be careful nor to damage the mamshaft threads
Stake the lock nut into the mainshaft groove