2001-2006 Honda TRX 300EX Sportrax 300EX Factory Service Manual, Page 75Get this manual
LUBRICATION SYSTEM Install tha oil pump aligning Ihe holes on the crankcase and he oil pump, thBn install the dowel pin through the holesTIghten the mounllng boils securelyMeke sure the ptJmp drive and driven gears engage propertyInslall Ihe dowel pin and new O-r ing onto the