[eligunn]

John_AZ, I was talking about the kind of tensioner without the spring, as viewed in the diagram above.
However whenever I see one tightened properly it is rotated counter clockwise, with the point that is facing the balance belt roller in the diagram approximately 270 degrees counter clockwise to what is viewed in the picture, which I think might be misleading to someone who is trying to line their tensioner up with that one.

Turning the tensioner counter clockwise puts more surface area of the belt in contact with the water pump pulley. And with the point of that hex aiming toward the center of the pulley you know you are close. What you see in the diagram is the flat side of the hex part that has obviously been rotated clockwise to tension, reducing the area of belt contact on the pulley which is wrong.