Bührer 6
2 models in this series
Bührer 6105: the six-cylinder tractor of the 6 range, 73.5 kW (100 hp) at 2,550 rpm, 3,730 kg unladen weight, built 1975 to 1978
Bührer, a Swiss tractor maker based in Hinwil in the canton of Zurich, built field tractors for the country's farms from the 1930s into the late 1970s, competing with brands such as Hürlimann and Meili. With the 6105 in the 6 range, the firm placed its strongest six-cylinder model in the programme from 1975 to 1978.
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The 6105 carries a water-cooled six-cylinder diesel engine of 5,675 cm³ displacement, producing 73.5 kW (100 hp) at 2,550 rpm – a comparatively large engine for a Swiss maker of this size. With an unladen weight of 3,730 kg, it reaches a top speed of 25 km/h.
At 25 km/h the 6105 falls within driving licence category L up to 40 km/h. A six-cylinder of over 5.6 litres displacement belonged in the second half of the 1970s to the top class of Swiss-built field tractors and was designed for heavy tillage and draft work with high power demands, not for light farmyard use on smaller holdings.
When buying such a heavy six-cylinder second-hand, the operating hours and the condition of the injection pump, the tightness of the engine and cooling system, and wear on the clutch and gearbox after years with heavy implements matter most. Rust on the chassis and sheet-metal parts, together with the availability of engine spare parts for this rare Swiss model, further decide the scope of work needed, and finding one can take time.
Sources: SpecCodex-Register: Kennwerte des Modells Bührer 6105
Models
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
