Question: Some of my large in-ground heads that lift and spray groundcover beds don’t come out all the way. It also seems like there isn’t as much pressure as before. What might the problem be?
Answer: Usually a gasket is worn out. You can usually take those heads apart and get the old gasket out. Take it to a local supplier and buy extra gaskets for future needs. When one loses its seal, the rest will usually follow suit soon thereafter.