oiling problem...

I am new to this and just bought a 03 yz450f to have some fun on this spring...its my first real dirt bike lol. when i got it home i checked the oil, air filter etc. everything was filthy! i changed the oil i put exactly one quart in and didnt change the filter...i ran it for 10 min shut it off went to check the oil and the oil poured out from the dipstick fill hole...let it cool down did the same thing... any suggestions on what this could be?

Did you remove and drain from both drain plugs

The hole from the frame? These bikes need a quart and a half. You put a little over a quart in it then let it idle for a little bit. Then fill it up completely

I am new to this and just bought a 03 yz450f to have some fun on this spring...its my first real dirt bike lol. when i got it home i checked the oil, air filter etc. everything was filthy! i changed the oil i put exactly one quart in and didnt change the filter...i ran it for 10 min shut it off went to check the oil and the oil poured out from the dipstick fill hole...let it cool down did the same thing... any suggestions on what this could be?

You failed to drain either the crankcase or the frame, and overfilled it. And the '03 does not take a quart and a half.

Here's the oil change procedure in a nutshell:

http://www.thumpertalk.com/forum/showthread.php?p=8765660#post8765660

Here's why it's like that:

http://www.thumpertalk.com/forum/showthread.php?p=5221903#post5221903

...and here is a link to a service manual:

http://www.yamaha-motor.eu/eu/services/owner-manuals/index.aspx

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