Dirt Tank Assembly for the BISSELL JetScrub Pet Carpet Cleaner, Series 2529. To empty the Dirty Water Tank, follow these instructions: To release the Dirty Water Tank, press down on recessed button on the top of the tank. Tilt the tank slightly toward you. Grab the handle and tank with both hands and pull the Dirty Water tank up and away to remove. Grab top of Dirty Water Tank in recessed area on each side of the Float Stack and pull upward to remove top of tank The Float Stack prevents the tank from overflowing. When the tank is full, the Float Stack will shut off your suction motor creating a high-pitched sound indicating it is time to empty your tank Pour dirty water and debris out Rinse the inside of the Dirty Water Tank. Rinse the float located at the bottom of the top of the Dirty Water Tank If the inside area where the Dirty Water Tank sits is dirty, wipe clean with a rag Leave parts out to dry before reassembling Once parts are dry, reassemble and replace the top of Dirty Water Tank Angle the tank back into body of machine inserting bottom first. Tilt the top of the tank toward the machine and push into place until you hear a "click." Dirty Tank Assembly JetScrub 1617948