The other day I bought a used 14 hp Billy Goat blower, and it is in fine shape. Of course I won't be using it for awhile, as it is full time winter in Maine now. But I wanted to service it for when I will use it. I have a unique problem. I can see where the engine gear oil get filled and drained, but the engine oil, I can see the fill, but not the drain. The oem, and videos etc online show nothing. if someone has one of these, just give me a clue. tnx