I'm sure this is not rocket science, but I just don't want to wreck anything. When I replace the Filter on my Splitter, it looks like its gonna dump a bunch of Hydraulic oil out because there is a large Fluid Hose above the level of the filter which is going to naturally drain out. Do I change the filter and then overfill the reservoir, then pull oil through the pump by pulling on the starter rope a few times with the engine switch off? I read you can wreck the pump if you run it with no oil. What is the correct procedure? Thanks to anyone for tips, its my first filter change - BTW its a great splitter.