No I replacing the seals has nothing to do with the pump supply or pump
discharge
plumbing connections. I can take this pump apart in about 5 minutes.
But these
too connections involve plumbing connections and I am not sure what to
do with
them.

Any ideas on these two connections?

Richard J Kinch wrote:
The question is: can I replace this myself. And if so how might I go
about it. Both removal and replacement.

Thanks in advance for any advice. I am something of a pluming rookie
but I replace the seals in this pump successfully.

Sure, if you've managed to replace the seals, you should be capable of
disassembling what you need to replace this part of the housing. The
Polaris Web site has downloadable documentation including exploded parts
diagrams.