1961-1980

The David Brown 990A was in production from 1961 to 1980 this tractor featured a David Brown 4-cylinder gasoline or diesel engine. The tractors serial number was often duplicated on the chassis frame. The engine number would typically start with AD 4 which stood for Agricultural Diesel 4-cylinder.

Engine: David Brown

Cylinders: 4

Bore & Stroke:

RPM:

CID: 195

Fuel: Gas/Diesel

Main Fuel Tank Cap:

Aux Fuel Tank Cap:

Carburetor:

Cooling Capacity:

Drawbar HP: 53

Belt PTO HP:

Weight: 4600 lbs

Length: inches

Width: inches

Height: inches

Number of Gears: 6/2-12/4

Options:

1961: 440001

1962: 441323

1963: 450376

1964: 460376

1965: 472273

1966: 483768

1967: 496283

1968: 504690

1969: 808150

1970: 818301

1971: 826009

1972: 850600

1973: 854403

1974: 859367

1975: 863900

1976: 11070001

1977: 11080236

1978: 11089141

1979: 11096828

1980: 11104577