In 1979, entirely new models, the D 3000 and D 4000, were introduced in the 9-12 foot size category. Compared to the previous mid-range models, the threshing bars and sieves were shorter, especially the 2.7-meter threshing bars of the D 3000, which were short. The D 4000 and the D 3000 S model introduced a couple of years later featured a hydrostatic drive system. The operator's seat had been moved to the centerline of the machine, but the hinge structure of the unloading auger was still open, and the auger's rotation was manually operated. The grain lifter drum was hydraulically driven, similar to Dronningborg’s design. The grain sieve was fixed or adjustable as an optional accessory, and the seed sieves were interchangeable. The combine harvester was equipped with an after-cleaning drum.

Later on, the Perkins engines were replaced with Valmet machines. MF did not manufacture combines this small, but in 1987, Dronningborg made a deal with Case IH, and the D 3000 and D 4500 were sold, for example in Germany and France, under the Case IH Dania brand. Earlier, at least in the Netherlands, the Dania brand had been used for Dronningborg, which was the name of the group owning Dronningborg and, among others, Kongskilde.

At the top of the small model range, in 1985, came the D 4500, which differed from the D 4000 by having a larger sieve and a bigger grain tank. The seed sieve was adjustable, and the unloading pipe could be hydraulically rotated, but remained open. Later, the D 4500 was also available with a 6-cylinder engine.

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