Help with cleaning a grill

I think we need some more info. Like maker of the grill. I don't know grills by model number. In general you can clean it completely and see what condition it is in. Look for rust spots that may break through. If the grates are too rusted, I would just get new ones. I would use a scraper and wire brush to see what you can get off. What kind of material is made from?

looks like a yoder.