This is for the 4.8 gallon (18 liter) Vevor oil-free air compressor. I would give it 5 stars except for the instructions.Bottom line, I like the unit and so far I'm happy with the purchase.Got this yesterday (Oct 2024) and managed to figure out how to put it together myself and blow out my hoses before winter. It works well. There are a number of issues however that need addressing.Instructions lacking* The instructions don't tell you to screw in the air filters and whether to run the unit with these filters open or closed. I am assuming closed; I think you open each to clean or replace its filter.* Instructions say to attach the pull rod (it’s welded to the tank) and attach a handle (there isn’t one), both instructions are unnecessary.* The cushion foot doesn’t attach the way shown in the instructions, you have to reverse it so it can be attached. It can’t be screwed in the way that's shown in the instructions.* The instructions don’t tell you to connect the quick-release connector or how to do this. You need to use some 1/2 inch plumber’s tape (teflon, not supplied) to wrap around the threads to get an air-tight seal. You tighten this using a 11/16” wrench (not supplied).* There is no "ball valve (3)" that I can find that "can be used directly."* On this model you pull up on the switch to turn the compressor on, push down to turn it off.Descriptions lacking* There are two pressure gauges, and the instructions don't say what each means.* There is an adjustment near the gauges, it's orange and it turns and has a + and - on it (a regulator?). It arrived loosened/unscrewed, but the instructions don't say what this is or how to use it.Putting these last two points together, I think: one gauge tells tank pressure, the other gauge tells output pressure, and the adjustment knob with +/- (regulator?) changes the output pressure. I’ve confirmed this.To summarize, the setup consists of:1. Attach two wheels2. Attach one cushion foot3. Screw in two air filters4. Connect
Julian Lösche 
