water pump/lower unit

[Sean]

Since I bought the boat last Auguat, I have not changed the water pump. I took her out last week and she ran perfect! even wit the old plugs full of carb fogging crap.
The water preasure comming out of her isn't to strong, and I know I need to atleast change/look @ the impeller.
My question is, how big a project is it? I charge alot of things head on, and I get lucky about 80% of the time, but I dont want to roll the dice with my engine if it is going to be a bigger project/risk then I think.
Thanks for any incorregement or warnings you may have!