Counter clockwise raises fuel level, clockwise lowers. Let the motor idle for a few minutes to leak check and fuel level to stabilize with new setting. After the first test drive take a peek again.
This is good info.
Some of the information posted before that is wrong.
a. The hex nut controls the float level. The screw is the locking and sealing.
b. You're using a Proform bowl, not an old school Holley. Use Proform's level which I suspect will be the center because IIRC they're using the big clear sight glass, not the little screw in ones.
c. There's no need to make the adjustment with the engine running. Just make a little adjustment (1 or 2 hex flats) and then start it up and take a drive.
PS. Setting your regulator lower will reduce aeration of fuel in the bowl. There should be no need to run at 6.5 psi unless there's a lot of restriction. But what's really important is not the PSI at idle (as long as it doesn't push open the valves) but the PSI on the highway and down the track. As long as it has enough pressure to keep the bowls full all is good.
