I am trying to change or check the oil level for the pump side of this pressure washer. I have 3 plugs to add oil the two on the mid section of the engine yellow and a white one 3/4 of the way up on the engine.

I drained the oil yesterday and purchased a quart of the non dertegent oil for the pump so I thought the fill closest to the pump would be for the pump, so I kept filling and filling and it all went to the main crankcase, so I drained it out.

Why the 3 filler plugs? Do they all go to the same spot?

How do I change the oil for the pressure pump?

The engine is a Briggs and Stratton Interteck 206