John Deere S660-S690

In the autumn of 2011, the revised American S-series was introduced to Europe as a complete line of four models. The S660 and S670 differed primarily in engine power, as did the S680 and S690. All engines featured a particulate filter, an oxidation catalyst, and two turbochargers, but no urea injection. When the tank was emptied, an extra 34–50 hp became available. As an alternative to the previous TriStream drum, the VariableStream drum was offered, which expanded toward the rear in the discharge section to help move wet material more easily. The separation area was also larger than before.

A 30% more spacious Premium cab became standard, with all controls located in the armrest. In addition to the standard button-operated gearbox (standard on the S680/S690), customers could opt for the ProDrive gearbox, which shifted automatically and included a hydraulic quick-shift feature plus driving-speed memory presets. From the S670 upward, a high-capacity chopper was standard. Except for the smallest model, the S-series could also be equipped with tracks or a tilt-away hillside header. The unloading auger was articulated to shorten the machine’s transport length.

For 2016, PSS-series engines with urea injection were introduced, and a 40 km/h road-speed option became available.

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