I have a new to me boat with a Volvo Penta engine (350 Chevy) and outdrive (judging by the Volvo Penta on the transom mount). I need to replace the prop, and cannot figure out how to remove the cone in order to access the prop nut. Are there service instructions available somewhere? I can't find any on Volvo's site, and since I don't know the model of drive I have, it's more difficult. How do I ID the drive, and how do I get the propeller off? Thanks in advance.