If you have an electrical burr grinder, you would have to ensure that it is unplugged and turned off. The next step is to remove the hopper and grind chamber, here, do not forget to clean the coffee dust or oil buildup. If you find a difficult time cleaning it with a cloth, do not hesitate to apply some mild soap and warm water and rinse them so that you can get the best results. After this, you should remove the outer burr, and the inner burr should be kept in place, just leave it because it requires more force in order to be removed. However, you should clean both burrs so that no coffee particles are left! Finally, reassemble your coffee grind and that's it. If you have a manual coffee grinder, you should start disassembling your coffee grinder, by unwinding the adjustment know and pull out the inner burr. Interestingly, the inner burr has a centerpiece that can be pushed in or removed as well. Once you're done with it, keep in mind that each part of the coffee grinder should be kept in place because you don't want to search for lost smaller parts. After that, clean the dust build-up and assemble the coffee grinder again.