Evinrude 150hp ficht 6 cilinder

I’m looking at boat, mainly looking at it’s mooring spot, but the boat doesn’t seem like it needs a lot of work done to it, but my only concern is it has an Evinrude 150 ficht and don’t have a lot of knowledge of evinrudes but a mate of mine had one and said it was the worst thing he ever had but it was quite a newer model than the one i’m looking at, so my question is how complicated is the motor to work on and how difficult are the parts to source for it, and any other things that i should be looking at i will pressure test the motor but it looks like the owner did that take good care of it.

Thanks