Son of a bitch. Should have left alone. I was afraid this would happen. Cannot for the life on me get the impeller in without knocking out the key. Zip tied impeller , greased, wd40. Released tension on belt to move to 12. Knocks it off or jams it sticking up. I must have tried 50 times and whole pack of zip ties. Many hours later, ran out of time and going camping boatless. Thanks guys for the bad advice to just change it!!’ Lol. Should have left good enough alone to make it through the weekend. If you haven’t changed one on an ilmore you don’t know!