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.
1 But Alzheimer's is not just a disease of old age. 2  Up to 5 percent of people with the disease have early onset Alzheimer's (also known as younger-onset), which often appears when someone is in their 40s or 50s. 3  Learn more: Early Onset Alzheimer's and Risk Factors.4  Alzheimer's worsens over time.lzheimer's and dementia basics. 1  Alzheimer's is the most common form of dementia, a general term for memory loss and other intellectual abilities serious enough to interfere with daily life. 2  Alzheimer's disease accounts for 60 to 80 percent of dementia cases.