Quamar 54mm flat burr

Ensure that the upper burr collar is properly aligned before screwing back. Cross-threading could cause permanent damage and render the grinder not repairable.

Upon removal of the upper burr collar. Ensure all the threads are properly cleaned, free of coffee and lubricated with a food grade grease before placing back. The reason for this is if coffee is stuck inside the thread, and the user force the collar in, it could cause the collar to jam, causing serious damage to the thread.