HANDBOOK OF THE Ki-44 Shoki model I and II
The handbook start at page 3, the first pages being the cover.
I reproduced the text exactly like it was. All text in black is from the original document (including numerous translator's notes). All text in red is from me (comments and updates)
There are a few imprecisions in the translation, the most common being the use of "oil pressure" instead of "hydraulic pressure" (the Kanji are the same in Japanese)
There are a few item that I was unable to understand the purpose (like the "altitude lever" ; It might well be the mixture lever) as well as an other control lever which in japanese is refered to as "Overboost lever" or "Boost lever". It might be the first speed/second speed changing lever, that is the supercharger control.