Yep. Open the pump cover. Clean the cover, clean the mating surface on the pump. Inspect and lubricate the o-ring with silicone lube (magic lube II), if the o-ring is cracked or compromised, replace it. Also the drain plugs.
You need water in the pump first so that the shaft seal has some water to cool the mating surfaces while priming. Just run the hose for a bit to get some water in the volute. Then replace the lid.
Yes, you now have the valves "open." Let us know how it goes.