(You Have to Install the Pipes and Fittings Again.). After Oil Pumping, Remove the Tube, and Then Run the Pump for a While, Pump the Remaining Oil Inside the Pumping Clean. After Oil Pumping, Remove the Tube, and Then Run the Pump for a While, Pump the Remaining Oil Inside the Pumping Clean, or Pump Water for a While Until the Pump Head Gets Clean.
