Yes it will be good timing friday for sure, it will give me a good weekend project. Bought the motor used and there is no telling when the last time the impeller has been replaced. Thanks for the links Brett for some reason when I searched google it kept giving me links to 90hp and above engines even when I typed in 9.9.
I downloaded the program and opened the file but my computer will not uncode the program when I open it, it just has a bunch of random numbers and letters, I'll try to have a friend open it for me on their computer.
As a side note, and once you get done replacing your water pump you should always keep a length of weed-wacker/trimmer line in your boat or tackle bag. It's thin yet stiff enough to get up in the motor's pee hole to clear obstructions when it's not pumping water.
I coil mine up and zip tie it to something under the seat/console. Bright orange so it's easy to find when you need it!