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.
FULL STORY. People with dementia survive an average of four and a half years after diagnosis, with age, sex, and existing disability all having an influence on life expectancy, finds a study published on the British Medical Journal website. The authors hope that these estimates will be of value to patients, carers, service providers, and policy-makers.