In 1989 the injection was electronically regulated and new ECUs added to control the most important functions of the traction components and differentials. In 1990 115 HP (H6115) and 135 HP (H6135) models were released. 1991 was the year the MASTER range was launched, high power tractors fitted with the innovative “Electronic Power Shift” transmissions. Thanks to the PRINCE range of smaller tractors, in 1993 Hürlimann entered a new market segment: small-scale farming and agriculture.