dwg lanz bulldog - Vehicle-Tractor-LanzBulldog-00666se... by seifert

The Bulldog was an inexpensive, simple and easy to maintain vehicle. This was chiefly due to its simple power source: a two-stroke hot bulb engine single cylinder horizontal engine. Initially the engine was a 6.3 litre, 12 horsepower unit, but as the Bulldog evolved this was increased to 10.9 litres and 54 horsepower. While hot bulb engines were crude , they were easy to maintain and could burn a wide variety of low grade oils –even waste oils.

The Bulldog was one of the most popular German tractors, with over 250,000 of them produced in its long production life.

source: Wikipedia (eng.) 2009-12-02