Mazzer runs but no coffee comes out: document the sequence

First distinguish silence from rotation

When you request service, say whether the Mazzer is silent, hums without turning, or sounds as though it runs but produces no grounds. Include the full model designation. A Mini, a Major, and a Robur do not share every adjustment, control, or burr assembly.

If the grinder stopped after a grind adjustment or a change of beans, record that sequence. It is useful evidence, not proof of a damaged motor. Avoid repeated starts on a stalled grinder.

Cleaning has a boundary

Switch off and disconnect power before the operator cleaning described for your model. Never put fingers or a tool into the burr area while it is connected. Do not remove protective parts or bypass a safety switch to make it run. If the normal cleaning procedure does not restore operation, leave the internal work for service.

Mazzer supplies separate tutorials for its grinders. Use the correct one before moving an adjustment collar or dismantling an accessible cleaning part. A demonstration for a different generation may not describe your mechanism.

How we investigate output complaints

At the bench, we inspect the coffee feed and discharge paths, burr condition and seating, and the relevant drive and controls. A worn cutting surface, an obstruction, and a motor fault need different repairs. We explain the finding before recommending replacement parts.

For a grinder that still works but doses inconsistently, retain a few weighed samples from ordinary use and the setting used. Do not keep operating a unit that smells hot or repeatedly stops. We arrange pickup and return for accepted grinders and confirm the equipment details when booking.

Manufacturer instructions

Mazzer’s Mini tutorials and Robur S tutorials are model-specific. The burr guidance also distinguishes burr versions rather than assigning every grinder one replacement interval.