2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 87Get this manual
LUBRICATION SYSTEM
TROUBLE SHOOTING
Oil level too lowigh oi co sumpti Oil co nsum pt io Ext ern al oil leak Worn pist ri ngs or inco rrect iston ring installa tion
Wo rn cylinder Worn va lve gu id es or stem seals Oil pump wo rn or da maged Low oil pressur Oillevellow
Oil pressure relief valve wear Clogged oil strainer or filter Faulty oil pump Internal oil leak Incorrect oil being used