MF 30 and 31 were among the smallest and most affordable combine harvesters on the market. The cutting width was 175 cm on the 30 and 210 cm on the 31. The threshing drum width was 60 cm, with a diameter of 45 cm on the 30 and 56 cm on the 31. The driving speed was continuously adjustable by a mechanically operated variator. As usual, the combine could be delivered either with sack or tank equipment. The tank capacity was 6.5 hectoliters on the 30 and 10 hectoliters on the 31.

The 31 featured hydraulic brakes, hydraulic height adjustment for the cutting table, and height adjustment for the straw walker, a feed conveyor instead of drum feeding, and a cylinder sieve for separating weed seeds. In Finland, the Perkins 1.8-liter diesel engine was standard. In Finland, sales of the 30 ended already in 1967, after which it received the same sieving system as the 31. Both models remained in production until the mid-1970s.

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