Nice, looks equivalent to my Great Northern, Honda engine unit I bought around 20 years ago and still works great!!
Frankly the adjustable tip is what I used for most of those years. Being completely ignorant of how the "tools make the machine", to me the correct tips made my powerwasher come alive. That adjustable thing was a piece of junk really and I didn't know better.
I bought a rotating turbo nozzle for just abusive blast cleaning for the nastiest surfaces.
A set of six changeable tips. Sure a little more hassle than an adjustable tip, but each one works better than any setting on the adjustable.
A 15" surface cleaner. Like a turbo upside down lawn sprinkler on steroids. Two impinging nozzles spinning like crazy under the hood, cleans really well. With one of these you can clean any concrete surface in 20% of the time it takes wanding it. Simply an amazing tool. It just works - if you don't trust me on any other tool suggestions just get this one.
An under the car 5 head sprayer, with wheels. Even if you live in a warm dry place, this sucker gets all the junk from under side of your vehicles, salt in particular, but dirt and sand and animal goo.
Lastly a foam cannon for applying any water based soap. I use it mostly for cleaners on my concrete patio, car parking areas and driveway. Makes a nice snowstorm, dirt and oil float up then hit the flat surfaces with the surface cleaner again.
Have fun, use ear muffs