We inherited a Polaris 360 pool sweep. When we first got it, it worked great. Some time last year however, it stopped working right. When I hook it up to the wall, and hold it loosly in my hands, the wheels spin. However, as soon as there's any traction on the wheels (like my hands, or the pool wall), they simply don't have enough strength to keep spinning.
I was hoping not to have to take it to the pool store to get fixed. Any ideas on what might be wrong with it, and whether it's something I can fix myself? last year my husband and I took it all apart (because the ball bearings were falling out), and put it back together with some new ball bearings (in their little casing...) We didn't replace all of them.