My 7 year old 20Kw Kohler took a dump last week on a maintenance start up. Locked up solid. Kohler service said they don't know why - could be engine or genset itself. Would cost more to diagnose and repair than just getting a new unit. Do any of you kind folks have replacement recommendations? I will appreciate your thoughts.We talked about whole house generators on another thread. I had a Kohler 20 KW generator installed in December. I now feel more comfortable about being prepared for almost anything. My generator just sits there, ready. And it's comforting when it fires up automatically, every two weeks, for a 20 minute "exercise" run. That just tests the system, and keeps the battery charged. The technician said he will return in three years to service the unit and replace the battery.