Yamaha YFZ450 Oil Reservoir is Full!

[mxer829]

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?

[NYMXer]

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

[rookie23]

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

[rt20ps]

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