First job doing a restaurant and some sidewalk on the square

(No offense to anyone). Info on internet for that pump and setup is all over the place, including the engine HP the pump needs to be 8gpm, or 6gpm, or 5.1gpm.

How are you adjusting the pressure? At the unloader? If so you might want to rethink that and adjust your pressure with different size tips using a psi chart.

Are you looking to do mostly commercial work with that machine? If that pump is rated at 10 gpm then your psi with that engine will be too low for commercial.

2250psi x 10gpm / 1100 = 20.4hp
2850psi x 8gpm / 1100 = 20.7hp

5.1gpm for commercial work will be pretty slow for flatwork and rinsing if you’re doing it all the time.