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Published on Mar 30, 2015
An easy way to check blade diameter without removing blades on a John Deere 50, 60, or 90-series no-till drill opener. Guidelines on when to replace, and the benefits of sharp blades -- which Exapta was adamant about for 15 years prior to selling any replacement blades. Our advice on this topic hasn't changed, but this video makes it more vivid. Replace at 17.4" for blades that were 18" new. For other sizes, replace when half the bevel is gone.