WK-40 (1935-1940)

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Tractor Info


The WK-40 was a standard tread tractor manufactured in Milwaukee, Wisconsin. It was available in three engine options, the International Harvester 4.9L six-cylinder gasoline, the International Harvester 4.9L six-cylinder kerosene, or the International Harvester 4.1L six-cylinder gasoline. All were 4×2 2WD with manual steering, bull gear final drives, three-speed or four-speed unsynchronized gear transmission, and an open operator station. Its variants included the WA-40 279ci gasoline, the W-40 289ci gasoline, and the WD-40 diesel. The color changed from grey to red in 1936.

Tractor Info

Engine: IHC Vertical I-Head

Cylinders: 6

Bore & Stroke: 3.75x4.50

RPM: 1600

CID: 298.2

Fuel: Distillate/Gasoline

Main Fuel Tank Cap: 31

Aux Fuel Tank Cap: 1.25

Carburetor: Zenith 50-AY12

Cooling Capacity: 12

Drawbar HP: 35.22

Belt PTO HP: 49.76

Weight: 6100 lbs

Length: inches

Width: inches

Height: inches

Number of Gears: 3/1


1935: 501

1936: 1441

1937: 5120

1938: 7665

1939: 9756

1940: 10323-10599

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Last Updated: August 29th, 2022

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