Make sure you are accessing this file directly from www.steam-brite.comIt seems you are trying to get it from https://steam-brite.com/literature/schematics/index.php?dir=Shurflo%2FTroubleshooting%2F&file=911-8000-813-138.pdf
Your IP address has been logged.
18.223.210.249 (ec2-18-223-210-249.us-east-2.compute.amazonaws.com)
Here is a link to the directory index the file is in:
http://www.steam-brite.com/literature/schematics/index.php?dir=Shurflo/Troubleshooting/