I have a '00 YZ250 and last couple of rides it has been leaking oil out of/around the oil cap, its not coming out of the cases or nothing like that but out of the cap itself. Do i need to replace the cap or the seal or is there more to it than just that?? Its only started after i had changed the clutch plates. Inbetween the 2 rides i drained the oil and put in the correct amount of oil and still leaked. Cheers to anyone that knows or can help me.
Could you have cross threaded the cap? If not go to your local HW store and get an o-ring to fit under the cap. This is the first I have ever heard of this type of problem.