Main engine drawings are unlikely to have the governor shown, at least if they are like all the other stuart drawings. You get a separate drawing when you buy the governor castings.
Best to post a photo as the older No9 governor was not the same as that fitted to the beam, victoria or newer No9 engines.
The photos here will blow up large enough to read and show the earlier No9 specific governor, bit more searching will find similar images for the bits of teh drawing not shown in my link.
Edited By JasonB on 05/03/2020 13:20:27