The air box on my 2003 350 keeps getting oil in it, motor was smoking, and blowing oil into air box when i got the bike last year, borded cyl out 30ths, stop smoking, but still gettig oil in airbox,
I dont know what is causing your problem however I have seen it before, I bought a new 350 rancher in 2000 which did the same thing I returned it to the dealer several times and each time they could not find anything wrong I finally complained enough that I was allowed to get another bike! Hope you find the answer to your problem im curious as well.
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