2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 86Get this manual
LUBRICATION SYSTEM
RELIEF VALVE
REMOVAL
Remove the front crankcase cover (page 10-7JRemove the following from the front crankcase
valve cap spring relief valve
FRONT CRANKCASE COVER
INSPECTION
Check the valve and spring for wear or damage and replace them if necessary