Question about Krups 408-75 Electric Blades Grinder

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Motor works and turns blades but only when empty or nearly empty.

I'm trying to get inside but seems like the blades are not designed to be taken off? is there a knack maybe? it seems like the motor is mounted on the base and the side casing would slide off if i could get the blades off. The model number is F203, it is 200W.

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