If you currently have a single speed (SS) pump and you would like to reduce your pool operating costs by as much as 80%, you should consider upgrading your pump with a Century Variable Speed (VS) V-Green 165 Pool Motor. To get these savings, it is only necessary to replace the motor. In all but a few cases, you would keep the housing end of the pump and just replace the motor. In this guide, we are replacing the SS motor of a Hayward Super 2 pump with a Century Variable Speed (VS) V-Green 165 Pool Motor. The VS motor adapts easily to the existing pump housing. Depending on your pump model, you would select either the VS motor with a square flange or one with a round flange. Although this guide features a Hayward Super II pump and a Century Variable Speed (VS) V-Green 165 Pool Motor, most of these steps are adaptable to most pumps.