undo t 5 bolts, remove lower unit, remove pump cover, slide old impeller off & replace with new one. Mske sure wesr plates & gaskets are good & replaced in correct order. put a little grease on top of unit & that's it.
The symptoms of Alzheimer's disease worsen over time, although the rate at which the disease progresses varies. On average, a person with Alzheimer's lives four to eight years after diagnosis, but can live as long as 20 years, depending on other factors.
Q: How long does Alzheimer's disease last on average? A: The sporadic form of Alzheimer's disease on average, given the state of good supportive care, can last from 5 to 20 years. The average, calculated by the Alzheimer's Association, is around 8 to 12 years. There are progressions, or stages, of the disease.