How To Prime A Shallow Well Pump. You fill the suction line full and it won't drain back into the well. Pour water into pump until water comes from the vent hole.
Use cement with no aggregate or bentonite clay for this. Take the plug out and run a water hose to the open hole where the plug was. Remove bushing with gauge and vent plug on opposite side of gauge on casting.
Most shallow well jet pumps handle air well and will evacuate air from the suction line but it may take several minutes to prime depending on depth to water, and pipe size and length.
Then gradually open the spigot as the pump continues to run and pump up pressure. Take the plug out and run a water hose to the open hole where the plug was. A deep well, on the other hand, must be dug further into the ground to reach water tables ranging 25 feet or more below the surface. Some types of plugs have plastic material that usually is in square or hexagonal shapes.