Hürlimann had completely switched to the production of diesel tractors in 1939, but in 1950 it was decided to reintroduce a petrol tractor to the lineup. The H 20 was equipped with a 4.0-liter 4-cylinder engine that produced 32 hp. In terms of basic construction, it was based on the D100 model. In 1952, the H 10, H 12, H 17, and H 19 replaced it. The smaller models still had 4-cylinder engines, but they were significantly smaller. The H 17 and H 19 had 45 hp, which was considerably more than the H 20. Technically, the petrol Hürlimanns were otherwise similar to the diesel models, but the electrical system in the H 10 – H 19 models was 6 volts. There were 5+1 gears, and the lifting device was an optional accessory. The lifting device was now compliant with the standard.

For the final year, the H 10 and H 12 received horizontally ribbed grills and rear gear drives in accordance with the new models.

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