Finally got my download for my 440b Service Manual. I could not believe that it does not address changing the oil. How to recondition the engine, yes. How to do anything and everything to the hydrolic system, yes. How to change the engine oil? No. It refers me to the Operators manual which I cannot find on-line. Shouldn't how to change the engine oil be outlined in the service manual? And if so what topic would it be listed under because i sure can't find it. Or, if I do need another manual entirely, any suggestions as to a website that has the Operators Manual because again I can't find it. Getting really frustrated here. Thanks for any insight.