Another pump motor question...
I have a booster pump that appears to be a Polaris (PB4-60 maybe?).
The motor is labeled AO Smith SK1072 which is Nema-C flange 56C keyed.
Everywhere that I have seen replacement parts for polaris booster pumps calls out for threaded (not keyed) and specifically the B625 which is a 56CZ frame.
Is it possible that I have an older model?