If you are experiencing a loss of GPM at the nozzle you may have a clogged strainer basket. Checking for debris is as simple as removing 4 bolts at your pump and meter strainer. Clean out your strainers as often as necessary (or at least every 6 months). Check out our online parts catalog for replacement pump and meter strainer baskets. Call Us at 800-859-8265 before 3:00pm and we can ship your order that day.