Choose the narrow spacing for general-purpose disking, including seedbeds and chemical incorporation as well as working in moderate residue. Choose the wider spacing for deeper diskimg and heavier residue conditions. Sizes range from 11 feet 11 inches to 20 feet 5 inches. Choice of blades . See your John Deere dealer for advice on blade type, size, and edge.
Tapered blades smooth out the soil .
Progressively smaller blades on the outside of the gangs reduce ridges and blend one pass into the previous one. Match weight per blade to your power and conditions. A 670 Series Offset Disk offers from 135 to 174 pounds per blade. Combination scrapers are standard equipment . Lock scrapers in rigid position to prevent excessive blade wear when you work in light, dry soil.