Spent 5 min on google to find a video pointing me in the right direction. The hardest part was getting the three 3” screws out of the phenolic block holding it in place!!! And draining the water which was about half full. Ugh
The pump filter had a treasure of coins and gunk. Cleaned it out and back in service.
It’s the black screw cap in the bottom right. It’s behind the cover. Ours had the manual hidden in there too.