Hello All, I have a 05 450 with 80+ hours on it and I change the oil all the time, every ride a oil change and every 3 rides a oil and filter change. Recently I was talking to some guys regarding my YFZ 450(Quad) and they mentioned cleaning the oil filter screen...I never did this till about a week ago. Wow was it nasty! After cleaning it I though that my bike has to have something like this too being they are almost the same engine. Well it does, how many of you with steel frame bikes clean/check this and how often do you do it...I now know that the manual says to do it every 40hrs but its a pain in the a** to do it. How oftern do you change them and how dirty have you seen them in past.