What I hate about factory service manuals ...

Having written manuals for a living, they'd have to post, for example, a different part number for every governor weight used in every application, every year, and then as soon as the part number changes for ANY reason (it used to be red, now the same part is blue), the manual had to be updated.
The parts manual is what handles this, and the parts manual can't have all the relevant data on every part or it would be HUGE.
Ditto shift points, or other generally fixed values, it'll be called out in the specialty manual for that application.

Right now, I personally am changing five different documents because someone wants a motor installed ninety degrees about its axis "just because".

The more generic the service manual, the more accurate *over time*.

And if you hunt, the info to build most special tools IS out there.