1. Obtain the Poké Radar. You can receive the Poké Radar through gameplay in Floaroma Town.
2. Travel to the Route 209 Entrance. This location is directly north of Solaceon Town and connects Routes 209 and 215.
3. Use the Poké Radar. Use the Poké Radar while at the Route 209 Entrance. This will cause wild Pokémon to appear in a shaking patch of grass similar in mechanic to the Safari Zone in previous installments of the series.
4. Search for a Shaking Patch of Grass. Keep using the Poké Radar on grass until a shaking patch of grass appears.
5. Find a Kubone. Inside the shaking patch of grass, there is a chance of encountering a Kubone.
6. Weaken the Kubone. Use your Pokémon to weaken the Kubone to increase your chances of capturing it.
7. Throw a Poké Ball. Throw your Poké Ball to catch the Kubone. Use the right type of Poke Ball for the highest chances of successfully catching it.