2004 Kawasaki & Suzuki 250F
If you’re looking at getting an older 250f, and possibly a Kawasaki or Suzuki, then you should probably consider some of this info. When these companies made their 250f, it was more like a Kawazuki 250f, because Kawasaki and Suzuki had partnered up. So most of the parts on these bikes are interchangeable. This was their first year making the 250f, so just by that you should be a little worried.
As some might expect, these bikes were not the greatest reliability-wise in 2004. Although they were fast bikes, they had an overheating problem caused by a bad/weak water-pump. Another defect these bikes had was in the valve-train that caused the valves to burn-up more quickly. These problems can get bad and scared me away from buying one of these bikes. This is not to say that these bikes do not perform. They have plenty of power, and if you really want to get one then I suggest you get a newer style complete cylinder head and get and aftermarket water-pump and impeller to fix the overheating problem. If you do that then the bike should be fine, but by the time you spend all that money on parts you could have bought a newer bike more than likely. Good luck, and remember that no matter what you ride, have fun and stay safe! Thanks