John Deere 9540i WTS – 9680i WTS

The WTS models were renewed as i-models in the autumn of 2004. The engines were updated and equipped with common rail injection. The smallest models, the 9540 and 9560, featured four-valve technology. Except for the smallest model, the engines provided an additional 17 hp of power at 100 rpm lower nominal speed. Highway speeds had been significantly increased compared to before, in line with competitors. As an option, there was the HarvestSmart computer, which automatically managed threshing adjustments and the appropriate threshing speed, based on the user's choice either on threshing losses or the machine's load level. The AutoTrac satellite steering, introduced a year earlier, was naturally also available as an option. Standard equipment included a new grain moisture sensor in the grain tank.

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