ロータリーの爪を組み替えて畝を立てよう！

I think you can do this with any tractor that any household has (whether it's old or new). In fact, it's clearly written in the rotary tiller's instruction manual. Large rotary tillers have a lot of claws, which can be a hassle, but small ones don't have as many, so this is convenient in its own way.