Using M2 hex, remove the 2 button head screws securing the part cooler fan. 1 attaches to the front and the other to 2 rear.

Pull the front half off to expose the rear section and hot end.

Now, treat it like an E3D V6 hot end. However, the nozzle is not V6 style.

The stock nozzle is MK8 just like standard CR-10/ CR-10S