How do I fix my coffee grinder?
In this regard, why is my coffee grinder not working?
A coffee grinder generally stops working because it's clogged with coffee grounds, not because it's broken. But even if those particles don't ruin a machine initially, you'll eventually start hearing a harsh whirling sound coming from the grinder – this can mean a broken part or even a dead motor.
Additionally, how long should a coffee grinder last?
It's tough to give an exact answer, however, a flat steel burr may last for grinding 500-1000 pounds of coffee and ceramic burrs may last for 1000-1500 pounds of coffee. On average, if you use a burr coffee grinder regularly, it should last for 5-7 years.
In that case, put the grinder head in a vise (do not crush!) and tap lightly counter-clockwise on the retaining ring with a rubber or plastic mallet. If it still won't budge, get a torch and heat the retaining ring to expand, then tap sharply but not too hard with a light hammer, like a ball peen.