Obtaining and installing larger Onan generator.

Generator does fine, except it needs auto start installed. All electric or at least the refrigerator gave me some question.
The possibility of an electric range or cooking surface and oven was a thought.
When this one needs servicing such as belts, I understand it going to be hard and expensive. Some arrangement of allowing the whole unit to be lowered and simply raised and secured with bolts, pins or what not was a though.