Thank you for your explanation...did you have to pull or move the engine to do so? JD is quoting 8-9 hrs for this type job. I know there is a lot of work to get to the water pump, but ws trying to ascertain the exact time?
My problem was the radiator kept getting low on antifreeze and the engine heat-light would come on, thus the fan would not kick-in...all this time I thought it could be a radiator sensor issue, but when I kept having to replace radiator fluid AND when I checked the oil the oil line was 2-3 times higher than it should be, plus the milky gray color, I knew I had a leak from the cooling system to the crankcase...this explains everything now.
I was just trying to get a handle on the parts: water pump, multiple gasket sets, oil/oil filter and anti-freeze, plus the labor Also, when pulling the engine, I guess you have to set the main belt and anything else tension related that when you pull/loosen the engine, you have to re-tighten again.
And yes, this is a Kawasaki engine...and that is how water gets into the engine.