After using your Master Manufacturing sprayer continuously, you might run into an issue where your Everflo 12V Diaphragm Pump is running while not spraying. On the rare chance this happens, here is a tutorial video to help solve the issue. If the issue persists, see other videos on troubleshooting your Everflo Diaphragm Pump or contact our Spraying Division at 1-320-340-6464.