04 yfz problems?

[rockabilly13]

I'm considering getting a used 04 yfz that has been tricked out some. I was wondering is there anything for the 04's that I need to look out for or be aware of.
Thanks in advance.

[kendog57]

will if it has been raced first make sure on the frame to see if it has been gusseted if not check for cracking
check the water pump seal for leaking
decompression plug make sure it's in or replace with aftermarket
they have some battery problems
but here are some of the common problems