My iseki has the same valve cover with the plate you can see down in the pipe, but the plate has about a 1/5" hole in it to keep it from letting the oil jump up out of the hole and if you go to add oil thru this pipe it will overflow quickly. The oil added goes in where the dipstick is. I tried it twice there and it filled and ran over and on the ground. The book on my izeki 2 cylinder says it takes only 3.6 quarts. It is a 2aa1 engine.