If you’ve ever gone to backwash or clean your pool and found the piston handle stuck or difficult to pull up, you’re not alone. This is one of the more common frustrations pool owners face—especially as seals wear down and debris builds up inside the valve. The backwash piston plays a critical role in keeping water flow moving correctly through your filter system. When it becomes stiff or jammed, it can prevent your filter from cleaning properly and even put extra pressure on your pump.

The good news is that a stuck backwash piston doesn’t always mean something is broken—it usually just needs some attention. In fact, learning how to properly remove, inspect, and lubricate the piston can help extend the life of your filter and keep your system running like new. In this week’s guide, we’ll walk through exactly how to do that safely and effectively. Take your time with this process, keep your tools organized, and remember that maintenance like this can save you from expensive repairs down the road.