The WER Knife Arm – 4000 Series (TRI-MACH-002261-REV-3) is designed for heavy-duty cutting performance in manure and slurry management systems. Built to handle fibrous and abrasive materials, this precision-engineered knife arm prevents blockages, protects pump components, and maintains consistent system flow.
Here is a link to the WER Owners Manual, including schematics. As a proud WER dealer, let us know if we can help with anything not currently on our website.
Call 517-458-9741 or email info@triplekirrigation.com.





