a second worm 86 on shaft 84 engages a second worm gear 88 mounted to reverse nozzle unit 54 see fig2 and 4c water passes through main inlet 24 and bore 64 in manifold 18 through housing inlet 66 and nozzle 67 and past turbine wheel 68 and into the interior of drive unit 10 at a turbine exit 91 thus powering drive train 62 this results in the rotation of second worm gear 88 and reverse nozzle unit 54 to which it is mounted water passes along direct pathways 104 106 from interior 26 through a region 108 defined between front and rear covers 20 22 through openings 110 112 in front cover 20 and through rigid fittings 114 116 for passage through flexible cleaner hoses 100 102 water which enters housing inlet 66 exits the housing in two ways water passes through a lateral bore 90 in vertical drive shaft 84 and into an axial bore in the upper end 92 of shaft 84 this water then passes out through a tile rinser 94 mounted to the tip of upper end of shaft 84 with the prior art pool sweep i water from within unit 10 would also pass through openings 96 98 for passage into cleaner hoses 100 102 with the present invention since there is no need to supply water to the cleaner hoses from the housing opening 98 is a blind hole a circular post 118 on rear cover 22 extends into opening 98 when manifold 18 is mounted to drive unit 10 so that opening 98 and post 118 act as positioning aids opening 96 is left open to allow the flow of water from turbine wheel 68 out of unit 10 through opening 96 as indicated by arrow 103 in fig4 c and.