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.
Alzheimer disease is characterized by gradual onset and progressive decline in cognition with. sparing of motor and sensory functions until later stages: The average course of AD is. approximately a decade, with a range of 3 to 20 years' duration from diagnosis to death, but the. rate of progression is variable.