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.
On the other hand, a person diagnosed with early stage dementia can live for anywhere from 4 years to 4.5 years. At the same time, it has been seen the longevity after diagnosis of dementia differs amongst men and women.