so there is water in the oil supply box?
The only oil that should be in the motor is there to supply the rave valves. There should be a supply line on the right side under the carb area and a return on the left.
I just drained and cleaned my oil system so here is what I did. Pulled the hose off the filter and let the oil drain into a few 2L soda bottles. Then removed the feed and return line from the tank. Dropped the return line into a bottle and blew air through the feed to force as much oil out of the rave gears as i could. I went ahead and replaced all my oil lines at this point. Remember when you re install all the lines to make sure you bleed to oil pump and the injection lines as well.