Abstract: A machine for cleaning cartridge filters used in pool filtration systems. The machine has a cleaning chamber which holds an adjustable tail stock assembly with a first cone and a second cone mounted onto a power-driven motor. The cones are pulled apart to accommodate a dirty cartridge filter. One end of the cartridge filter is placed against the second cone, and the first cone, which can be spring-loaded, is pressed against the other end of the cartridge filter. The cartridge filter is then locked in place. The power-driven motor spins the second cone, while heated water is injected into and through the hollow shafts of the tail stock assembly and the first cone, and into the perforated tube of the cartridge filter, where centrifugal force causes the water to leave the tube of the cartridge filter, carrying away dirt deposits on the surface of the cartridge. A row of spray nozzles can be used to rinse the cartridge filter. The used water is filtered, reheated, and recirculated back into the cleaning chamber.