First Oil Change

I just my first 4 stroke bike a couple of months ago, 2003 YZ 450 f. I've ridden it a couple of times now I need to change the oil, filter, etc. A friend of mine told me to clean an oil screen, but he didn't tell me what to clean it with. Fuel, water, ??

there is a oil screen/filter element under the headpipe - where the frame splits - I never did clean mine in my 03 as every 426 that I owned prior was clean as a button - it is a pain in the butt to get to and clean...see your manual pg 3-16

Still waiting for manual from local dealer. Ok to just clean with gasoline, right?

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