Identifying Disk Or Coulter Blades Eligible For WarrantyLoose gang bolts and operating in rock, stump, or frozen ground conditions are most common causes of blade failures. These types of blade failure are NOT warrantable. Check gang bolts periodically, and tighten. See TIGHTENING GANG BOLTS in this section. IMPORTANT: John Deere does not recommend and will not warranty any disk blades (carbon or boron) after they have been through a rolling process. The following illustrations show the types of disk blade failures that are eligible for warranty replacement. NOTE: These pictures of disk blades, eligible for warranty, also apply for coulter blades.  B9211-UN-11OCT88
Eligible Lamination or split blade caused by defective material. B9212-UN-11OCT88
Eligible Straight, directional break caused by defective material. | KB78086,0000886-19-20090715 |
|