I don't have suction at the upholstery hose, why is there no suction?

Answer: - Make sure the collection tank is not full. - Make sure the collection tank is seated correctly. - Make sure the handle is locked upright to ensure a good connection between the tank and the rear cover gasket. - Check for any damage with the collection tank cap. - Check the diverter knob is set to the tools setting. - Check the motor duct for suction. To locate, remove the water tank. The motor duct has a rubber gasket that is oblong. With the power on, place your hand over the hole for suction. If there is still no suction, call BISSELL Consumer Services toll free at 1-800-237-7691 Monday through Friday from 8 a.m. to 10 p.m. or Saturdays from 9 a.m. to 8 p.m. ET. A representative will assist you.