Could someone please explain to me how to remove the oil injection from this motor. I just picked this motor up for $200.00 as my neighbour repowered with a 50 4 stroke Yamaha. Compression is 138 lbs in both and I'm in thr process of cleaning carbs and changing lines and fuel filter. Decided to mix gas t see if I could have better luck than him. Any links, let me know thanks.