He's a 'mechanical' genius. [=he is a person who is very smart about machines]
He's not 'mechanically' inclined. [=he is not knowledgeable about machinery]
The flight was delayed because of 'mechanical' problems/difficulties.
(..) Push, little one. Push. Lothar, come. I have got something for you. - What is it? - A mechanical marvel. You might want to head home, big man. Someone has attacked one of your garrisons. It seems your king (..)2016 Warcraft