Bradson Gas Powered Pressure Washer Questions

Here’s the specifics:
Bradson Model # PWV02013
2.0 GPM
2000 PSI
Tecumseh 6.0 HP engine

First off, does the pump use oil for lubrication? If so, does it use engine oil, or does it need a separate kind of oil?

Attached is a picture of the underside, with the pump inlet and outlet. There are two round plastic plug-looking things, one yellow and one black. The yellow one rotated about a 1/4 turn by hand. I couldn’t get the black one to turn at all by hand. What are these? Are they plugs, or valves?

How do I drain the engine oil out to change it?

Anything else I need to know about operating or maintaining these things?

Lastly, is this a decent pressure washer, or some Harbor Freight cheapie?
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After searching around, it looks like a FAIP Pump #PK16860, according to>Link

The>Link website has a parts breakdown, but it just lists the top (black) plug as "plug," and the bottom (yellow) plug as "oil drain plug."

Does this mean I can drain the engine oil by pulling out the yellow plug?

I'd just get it running to make sure that it all works before I would start changing oils. Just make sure it has oil in the engine and in the pump.

Remember, you have the pump and you have the engine, they are seperate units. The pump uses syn and only 4 oz and the engine uses engine oil and about a quart.

You can let it idle for a couple of minutes without pumping water but you should trigger the wand at that point.

The engine is one manufacturerer, the pump is a different manufacturer and there are several manufacturer's of pumps. To me it looks very much like a Faip.

That's about it in a nutshell.