簡短的回答： 慢慢地。二進制搜索。 但對於espresso，土耳其語，moka或AeroPress：我將我的調整設置為最接近最小的設置，仍然可以毫無困難地轉動曲柄。
Method: This is how I adjust mine.
My experience: I have a similar Hario model (this one), which sounds marginally more difficult to adjust than the one you're talking about. I use mine for almost all of my daily coffee grinding. I set it very infrequently: I go through phases between pour-over and moka, and I try not to go through these phases more than once per month to avoid adjusting this thing.
When you've figured it out... I have put scratch "marks" on the screw for I (moka: fine), II (drip: medium), III (French press: coarse) so that I don't have to guess quite as much. Highly recommend indelible marks on your grinder once you find the setting you like. To change from one setting to the other, adjust to the middle: then go tighter to the "fine" setting, and looser to the "coarse" setting (otherwise, it can be ambiguous).
除了改變設置，我喜歡這個東西。甚至還有一個Kickstarter資助了底部的穩定機制，以確保更平衡的研究：它以 EvenGrind <�一個>（我沒有從屬關系）。