I have a kenowa tools 8000 generator, engin model number- 188F. I need a part called a valve spring keeper.Any ideas where to get one?The engine family number is 5CSGS.38925D. On the moter it has the name sanding on it.

I'd start at a good small engine repair shop. Valve spring keepers are quite common and I'd bet many are interchangeable. There are 2 per valve.