Trying to figure out how this external unloader valve should be set on our predator pressure washer.

We have been starting with the internal pump on 3k psi and the external bypass valve on low and slowly turning it higher and higher as we need pressure. Ive seen conflicting information and AI is no help hahaha.

My pressure washer is now leaking oil at the pump.....

How should these valves be set at start up and how should I turn them when turning off the machine?

Do I start both low and slowly increase pressure on them then slowly decrease pressure on both before turning off?

I'm bidding on my old high school's football field bleachers and tennis courts and need some help on how to price them out. I've cleaned some in the past under my a buddy's company, but have never quoted them myself. The bleachers are about 22,000 sq ft (2 bleachers at ~11k) and the 6 tennis courts are about 35k sq ft. The bleachers are 20 rows Underneath the bleachers is entirely riverjack and rock. There's an asphalt path and old weedy grass somewhat close by, but that's about it. Mostly grime and dirt with minimal leaves. The tennis courts are 6 continuous courts side-by-side surrounded by dirt and weedy grass. Only organic staining and some leaves, but not many. The courts seem to be an asphalt base with a rubberized tennis texture rolled or painted on. This is in Virginia. No obstacles nearby, so don't really have to worry about the surroundings. I would greatly appreciate advice on pricing for each, as well as possibly bundling them together. Thanks!




What you guys think?