The Farmall 826, introduced in 1969, was one of the first tractors equipped with hydrostatic power transmission. The first had been the smaller 656, which came onto the market in 1967. The transmission had two speed ranges, and speed was controlled with a lever located on the left side of the dashboard. This American tractor, with a power output of 123 SAE horsepower, was also imported to Finland. Alternatively, it was available with a mechanical transmission of either 8+4 or 16+8 gears. The power take-off output was 7 hp higher with the mechanical transmission than with the hydrostatic one. Other features included a ceramic clutch disc and a hydraulically controlled differential lock. Most models were also available with European-style four-wheel drive. The larger 6.7-liter 1026 Hydro was not brought to Europe, where the focus was instead on the 756 and 856 models alongside the 826 Hydro.

The 766 introduced in 1971 represents a revamped lineup, featuring, among other things, a new generation of engines, the Dyna-Life clutch, and more powerful hydraulics.

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