I have the Pasquini Lux grinder and I'd like to adjust the grind size. The user manual state that to do so (and I quote):

"The coarseness adjustment MUST be done with rotating motor while actually grinding, by rotating the adjusting knob."

Can this be true? It really wastes coffee because the adjusting knob moves the burrs very slowly.

I recall information posted by 1st-line Equipment that adjusting a burr grinder with the motor off could cause a jam and damage something internally when it is next turned on. I took it on faith and incorporated it into my grind size adjustment practice even though I wonder why adjusting for a larger grind size would matter. It could be that developing the good habit first is more important than seeking an alteration.

This is the recommendation on every grinder's instruction manual. There is the possibility of warping the burr carrier if

• You tighten the grind without running the motor
• while there are bean fragments in the burrs

However, I have never heard of a case of damaged burrs from doing this. But remember, my "heard of" is a few hundred hobbyists and third wavers, while the manufacturer's "heard of" is thousands of people who hate their jobs and would like nothing better than to get some paid time off while the shop's broken grinders are being fixed. In terms of risk groups, the two don't really compare.

How about adjusting while the motor is running but not grinding beans. I guess there is danger of burning the motor out if I ran it empty for too long, but just for 5-10 seconds while adjusting the grind size? I'm trying to avoid wasting coffee.

I would hate to waste coffee too, but a broken grinder is something I would hate even more. The beans ground during adjustment are wasted only if they are not used - save them up and make coffee!

Thanks for the advice. One more question: is it advisable to try and disassemble this grinder for cleaning? Again, the manual says:

The bean hopper is fixed to the top burr support and can be removed only with the same burr support, and this operation must be done by qualified technicians..

I have been using this grinder for a couple of years and have never cleaned it. I'd like to try.