I am putting the case halves together. There is a threaded hole in the case about 3/4" from the round plastic tip of the governor assembly. I don't find anything that can go there and nothing shows in the diagram that I have. You can see the hole in the 10th picture in the following post.
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=47175
The hole is just below the tip of the governor assembly in the picture and has some oil in the hole.
It appears that this hole is not used but I don't want to put it together and leave something out.