Oil Change on Torini Clubmaxx

This is the first time i have worked on a 4 stroke kart, but for some reason changing the oil has just stumped me which is meant to be on of the most easiest things. There are two orange plugs for the oil, one at the front and one at the back, the one at the front is lower than the one at the back so the oil will come out of it earlier so I am assuming you fill it until oil comes out of the front. but then how do you empty it, by titling it? I am probably missing something.
Thanks in advance

The drain screws are the 2 X 10 mm hex plugs front and rear of the engine just above the mounting face.

Fill with the prescribed volume oil. 500mL