I picked this up a couple of weeks ago (model J5RHLCNR) and of course I had the seller demo it so now it has some fuel sitting in it of questionable age/quality (probably no stabilizer either) and I want to drain it. The diagrams show a drain screw but I see no way of accessing it without removing the carburetor from the engine; is this the only way to do it? It is probably going to sit for another 4 months before I get to use it.