Abstract: A cleaning apparatus having a pan-shaped housing used to clean surfaces. Mounted on the top of the housing is a spinner assembly having a body containing a longitudinal passage. A tubular shaft rotatably mounted in the passage carries tubular arms located within the housing. The fluid flows from the hollow shaft into the arms and is discharged through nozzles having orifices mounted on the ends of the arms. The shaft has a head located in a chamber at one end of the passage. The diameter of the head is larger than the diameter of the passage and is dynamically balanced by the flow of fluid under pressure through the passage and chamber into the hollow shaft. The rotating shaft is laterally stabilized with a cylindrical boss attached to a cap threaded on the body. Alternatively, the upper end of the shaft has a cylindrical projection rotatably mounted in a recess in the cap to eliminate lateral movement and vibration of the shaft.