2007-2009 Honda TRX300EX TRX300X service manual, Page 134Get this manual
CYLINDER HEADVALVE Be careful not 10 let the bolts fall in 10 the crankcase
Apply locking agent to the threads of the cam sprocket boltsInstall the sprocket boltRotate the crankshaft counterclockwise one turn and install the remaining boltTighten the index line side bolt first while holding the crankshaftTORQUE: 20 N'm (2.0 kgfm, 15 Ibfft)
Rotate the crankshaft one turn and tighten the other bolt to the same torque
Apply sealant to the cam shaft end cap lipInstall the camshaft end cap into the cylinder head groove securely