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A submersible pump, which is the type most often used in drilled wells, consists of a pump and motor unit. The pump is placed directly into the well, below the water level. Jet pumps are not installed in the well, but installed above ground. Jet pumps operate by forcing water through a jet or Venturi, a narrow, cone-shaped device that creates a partial vacuum (suction) and draws water from the well into the pumping system. Shallow well jet pumps that are used where the water is less than 25 feet below the surface have the jet located in the pump itself.
The oil drain bolt is located on the bottom side of the pump. adding oil to your pump, the pressure cleaner should be on level ground. a site glass located on the side of pump, the oil level must be in the center of the site glass. manufacturer specification sheet for proper lubrication.