I have a Black Max 7000 watt generator that has a freshly overhauled Honda GX390 engine. The crank case had cracked and I installed a new crankcase, rings, gaskets and bearings when I re-assembled it. It has an electric start and starts and runs perfectly. It also has a charger that when plugged in keeps the battery charged. If I remember correctly, the hour meter showed it has ~80 running hours on it. I have used it twice to power my house when we had power failures, and it did a great job. I no linger need it, as I built a larger diesel powered generator.
It has been stored inside and is in excellent condition.