How to prime a sta rite mse 7 deep well pump, when I've filled the 1 inch pipe plug with water and it won't fill.

If your Sta-rite vertical mse-7 pump will not prime, there are a few things you can try to troubleshoot the issue:

1. Check the water level: Make sure the water level in the pool or spa is high enough to reach the skimmer and the pump. Low water levels can cause the pump to lose prime.
2. Check the skimmer basket: Make sure the skimmer basket is clean and free of debris. A clogged skimmer basket can restrict water flow and prevent the pump from priming.
3. Check the pump lid O-ring: Make sure the pump lid O-ring is in good condition and properly seated. A damaged or misaligned O-ring can cause air leaks and prevent the pump from priming.
4. Check the suction plumbing: Check the suction plumbing for leaks, cracks, or other damage. Any air leaks on the suction side of the pump can cause loss of prime.
5. Check the impeller: If the impeller is damaged or clogged with debris, it can prevent the pump from priming. Remove the pump basket and inspect the impeller for damage or debris. Clean or replace the impeller as needed.
6. Check the pump seal: If the pump seal is damaged, it can allow air to enter the pump and prevent priming. Inspect the pump seal for damage and replace it if necessary.

If none of these troubleshooting steps resolve the issue, you may need to call a professional pool service technician to diagnose and repair the problem.

water is filled in the body of the pump to prime it
fill the filter housing if that is part of the pump
make sure that there is no open pipes /hoses or air leaks on the suction side of the pump and that includes any vacuum machine hoses floating on the water surface

there's a small plug on the side of the pump. fill a gallon of water, plug back in. you might to repeat

shut off pump breaker at the lowest faucet drain completely. Turn it back on. If this doesn't work, you have to change out the pressure valve on the side of the tank. it's not hard.

see the FIRST in red under the STA-RITEremove the lid fill the pump up with about 3 gallons of water then replace the lid and start the pump. should start to flow in about 1 minute, if not repeat priming procedure

The pump does not need to be on during the fill process. You don't need to turn the pump on until the water level gets to the middle of the skimmer. The skimmer pulls water out of the pool to power the pump. It then goes through the filter and out the returns (jets) into the pool. If there is not enough water going to the pump (through the skimmer), the pump will run dry and burn up.

Check the o-ring and bushing on the pump diffuser.You will need to open the pump. Also try opening the air vent valve on the filter to help discharge air.

Take the pressure guage off and pour water in the hole untill it fills the pump, then screw the guage back on and cranck it up. You may have to do this a few times depending on how deep in the grownd the water is.

Did you prime the pump? To prime: Before turning pump on, unscrew plug cap from top of pump (usually on pump impeller housing,) and with a pitcher or garden hose, fill pump full of water, and replace plug. Then turn pump on and see if problem is solved. If leaking: Are all fittings tight, O-rings and seals new, and is there any pipe thread tape on all threads w/o seals?