In 1974, the updated 06 series tractors were introduced. The color scheme was changed to light green with a dark purple chassis. In 1978, the chassis color was changed to dark gray and the rims from red to silver, in accordance with the DX series. The 06 series was a basic tractor, delivered either with a roll-over protection structure or, depending on the country, equipped with a cab.

The new model was the 5206, which, unlike its predecessor the 5506, was equipped with a 3-cylinder engine. The 5206 had disc brakes. An additional gear was available for the transmission, increasing the speed to 30 km/h. In terms of dimensions, the 5206 was smaller than its predecessor and corresponded to the 4506. Four-wheel-drive models featured hydrostatic steering. The front axle was still a Sige. The last model years offered a limited-slip differential as an optional accessory.

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