Please note that the PICTURE UPLOAD function is not working. The iBoats Forum Moderators are working with the system administration folks at the parent company to get the issue resolved. This happened about a year ago and here we are again. In the meantime you can post photos as links to a picture hosting site of your choice. We are sorry about the inconvenience and will advise when the issue is resolved. Thank you for your patience.
you need the OEM part, or it will shear again. go to brp-johnson literature, engine diagrams, and get the part #. the shaft and wheel has to be clean and free of oil, when installing.
If I were a gambling man, I would bet that it is a special size. Haven't seen standard size woodruff keys in Johnrudes for a very long time, unless they have started recently...which I seriously doubt.