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Yamaha YFZ450 Oil Reservoir is Full!

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So I just bought a 05 yfz450 yesterday. First thing I did was change the oil and I noticed that the reservoir was almost filled with oil! I thought nothing of it and blamed the old owner of not knowing what he was doing.

Well, I just changed the oil myself (50oz in reservoir and 10oz in case) and after a 10 minute ride I noticed that the reservoir is almost full again!

Why would this happen? Did I do something wrong?

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I am assuming you drained both the reservoir and engine of any old oil................

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if it doesn't smell like gas and it isn't milky looking then you didn't do something right. back up and try again

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Sounds like the strainer in your oil tank is plugged. Pull the bottom oil line off and pull and clean the strainer.

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