Drive Train Protection-9420 and 9520

NOTE: Drive train protection system only affects operations in gears with maximum operating speeds below 9.2 km/h (5.7 mph).

Electronic engine controls provide protection from drive train overloading. Engine horsepower is automatically reduced to protect drive train components when:

  • Operating with extremely heavy ballast and full power lugging in gears below 9.2 km/h (5.8 mph) for tractors with 110 mm axles
  • Operating with extremely heavy ballast and full power lugging in gears below 7.6 km/h (4.7 mph) for tractors with 120 mm axles
  • Using a three-point hitch whenever hitch is not at upper raise limit
  • Using PTO when tractor ground speed is less than 0.8 km/h (0.5 mph)
  • See your John Deere Dealer for more details.

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