I can’t seem to find a good one either at the moment. It’s a pretty simple process though.
You need to get as much of the oil as you can out of the RV cavity, so you can either pull the bottom oil hose off and let it gravity feed out of the cavity, or pull the top hose and blow in it to push the oil back into the tank and then clamp the line off. You can then drain the tank of all the oil through that lower hose once it’s pulled off of the motor.
You’re then going to pull the tank and rinse it out with gasoline as best you can. Try to make sure you get all of the lines flushed too.
Once everything is cleaned and flushed, you can reinstall it and fill the tank back up with the new oil.
Then you are going to open the bleed screw on the oil pump and let it run until there are no air bubbles in the feed lines. Once you have a steady stream from the bleed screw, you can close it.
Start the engine and let it idle. With your hand, reach down to the oil pump and turn the arm all the way to the wide open position. You should see oil filling the small clear tygon lines. You can shut it off after it reaches the manifold.
