I will try to extract it with a reverse twist drill.
Anyway, I will take it soon to a Harley shop, as I need some more help with bleeding the front brake and clutch, so I will ask them about the "adjusting" screws. No, there are no engine or transmission rubber mounts, I'm sure of that.

 

OK, removed the 1/8" pipe thread plug that has the red arrow - and got oil !! thanks for advising.
I won't deal with the other plug, it's OK now.

 

Outstanding, glad you are making progress.