I can't figure out how to adjust Comptech's fuel pressure regulator. These are the directions I was given by someone else.

You need to loosen the nut with a box wrench then turn the adjustment with an Allen wrench while you have the box wrench on the nut..... After you adjust it, tighten the nut back down while holding the Allen wrench in place.
Can someone help with their expertise. And if possible could you mark up the photo below so I can get a visual of the nuts and bolts that needs to be adjusted.

 

The directions that were given to you are correct. The nut and allen head are on the top of the regulator. it can be seen to the very left of your picture.

 

Thanks you answered my question. I appreciate it