2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 123Get this manual
FRONT CRANKCASE COVER REMOVAL
Drain the engine oil (page 3- 10)Remove the bolts and oil cooler hose joints from the front crankcase coverRemove the O-rings from the hose joints
Remove the twelve caver bolts and front crankcase cover