3. Tightened two opposite knobs evenly at the same time 4. Turned on the stove and place the cooker on the burner. Placed petcock in horizontal position. Waited until a steam comes out from the petcock for a total of 7-10 minutes then close the petcock. 5. Waited until the pressure gauge register the desired pressure 6. If desired pressure is reached, counted the processing time. Maintained the pressure until the end of the prescribed processing time 7. Turned off the stove. Waited until the pressure gauge registers zero (0) pressure 8. Loosened two opposite knobs at the same time. Opened the cover in slanting position away from the face​