You can also just remove the oil pump shaft, flip the pump hold down special nut so that the pump body pulls down hard onto the crankcase, plug up the pump inlet/outlet, fill with premix and you should be good to go!!
Might be an idea to save any initial first start attempts till after dark. If it does indeed fire and run after you've dumped all the excess crankcase oil you'll still have a very impressive smokey haze for a few minutes, probably visible from Jupiter
![Wink ;)](./images/smilies/icon_wink.gif)