3800 (1968-1972)

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Tractor Info


Rated at 2,200 rpm, this model featured the company’s own three-cylinder, 146.1 cubic inch engine. It used a 3.939 x 4.000 inch bore and stroke. At rated engine speed, 39.16 maximum PTO horsepower was observed, as was an economy of 10.98 horsepower hours per gallon of diesel fuel. At 540 PTO rpm and a corresponding engine speed of 1,827 rpm, an economy of 11.59 horsepower hours per gallon was established with a load of 35.13 horsepower. Features included a selective gear fixed-ratio transmission having six forward speeds with a range of 2.46 to 16.7 mph. No repairs or adjustments were noted during 43 hours of operating time. The 3,885 pound total tractor weight was carried on 13.6-28 rear and 6.00-16 inch front tires. Additional front and rear ballast raised the total tractor weight to 5,835 pounds. Using third gear, the two-hour drawbar run at 32.13 maximum available horsepower saw a pull of 2,239 pounds at 5.38 mph with 5.53% slippage — fuel economy was posted at 9.44 horsepower hours per gallon. By comparison, the ten-hour run at 75% pull saw an economy figure of 8.77 against an output of 24.72 horsepower. Other statistics of this test include a pull of 1,677 pounds at 5.53 mph and slippage of 4.07%.

Tractor Info

Engine: David Brown

Cylinders: 3

Bore & Stroke: 3.939x4.000

RPM: 2200

CID: 146.1

Fuel: Diesl

Main Fuel Tank Cap:

Aux Fuel Tank Cap:


Cooling Capacity: 9 qts.

Drawbar HP: 32.13

Belt PTO HP: 39.1

Weight: 3400 lbs

Length: 115.625 inches

Width: 64.5 inches

Height: 51.25 (hood) inches

Number of Gears: 6/2 12/4


1968: 650001

1969: 650277

1970: 650358

1971: 650448

1972: 650537

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