Welcome to the site from SW Idaho.
Get the model number and brand name of your appliances, you should find what you need online.
Have the fan belts checked for cracks and the cooling hoses for weak spots.
Oil, air, fuel filters changed.
Make sure the generator has been serviced.
Tires aired up to specs.
Windshield washer fluid.
All lights inside and out working with at least two spare bulbs of each type.