Just bought a 97 YZ250.

Joined
Oct 8, 2007
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#1
Hello.
Sorry if this topic has been discussed before, but
I was wondering if this year bike had any common
problems? The top end has been rebuilt by the previous owner.

Took it out all day, and i've been told that that the seal on my
"power valve" is leaking, because there's black around that area
which seems to be burned oil. Other then that, it runs strong with
no problems.

Thanks for looking.

EDIT: Forget to say that it's bored to a 265 if that makes a difference.