Re: Help with new to me Evinrude
It is not a stud, but a threaded hole.
Looking from the front of the motor, behind the right side of the air breather you will see the block metal that protrudes up to where the front starter mount screw is attached. Below this starter bolt will be a metal 1/2 bracket that looks like it could hold something round about 1 3/8" dia. On these protruding bases are holes that are tapped. Usually the ground cable is attached to the inner hole.
Hope this helps