Field troubleshooting guide for CLAAS Markant, New Holland BC5060, and Hesston knotter systems to eliminate misties and broken twine during peak baling windows.
During tight baling windows before approaching rainstorms, nothing is more frustrating and costly than persistent knotter misties. A high-density baler producing loose bales or broken twine strings grinds harvesting logistics to an immediate halt.
Understanding the 4 Most Common Knotter Failure Modes
1. Knot Left Hanging on the Billhook: Usually caused by excessive billhook tongue spring tension or a worn stripper arm that fails to pull the knot off the billhook as the bale moves rearward. Inspect the billhook tongue for grooved wear and adjust spring pressure so the tongue can be opened by hand with firm thumb pressure (approx. 15-20 kg pull resistance).
2. Simple Knot Tied with Both Twine Ends Broken / Frayed: Indicates the twine disc holder tension is set too tight, shearing the twine fibers when the needle delivers the twine into the disc notch.
3. No Knot Tied (Twine Retained in Twine Disc): Indicates twine disc leaf spring is too loose, allowing the twine to pull out prematurely as bale pressure builds in the chamber before the knotting cycle initiates.
4. Loop Knot Cut Cleanly on One Side: Check the twine knife sharpness. A dull knife hacks and tears twine rather than slicing cleanly, distorting knot tension.
OEM-Matched Replacement Knotter Assemblies
Direct Agri Parts supplies drop-forged, precision-broached knotter frames, billhooks, and stepped twine discs 100% interchangeable with CLAAS Markant, John Deere 348, Massey Ferguson 1840, and New Holland BC5060 balers.