EC300 power valve's left cover assembly question

[Rampart]

Hi all
quick question here - am i missing a nut on that threat? I mean it's there for some reason, but it seems like i dont have nut for it...

 

[dANbOT]

Nothing missing, I don't know why they threaded that

 

[Rampart]

thank you! I can go on now)

 

[(F5)]

If you wanted to pull it.