Farmall F-20 tractor specifications

1932 - 1939

1932 - 1939 Row-Crop tractor

Production

Production Manufacturer:Farmall (a part of International Harvester)
Type:Row-Crop tractor
Factory:Rock Island, Illinois, USA
Total built:154,398
Original price:$1000 (1936 )
The Farmall F-20 was originally advertised as the "Increased-Power Farmall", and was similar to the orginal Farmall. The tractor paint scheme changed from gray to red on November 1, 1936 (the beginning of the 1937 production year). A number of F-20s were built in early 1934 using the Farmall Regular rear end and F-20 engine. These tractors are identified by a TA serial number prefix.

Farmall F-20 Power

Farmall F-20 Power Drawbar (claimed):19.6 hp
14.6 kW
PTO (claimed):26.67 hp
19.9 kW
Plows:2
Drawbar (tested):20.66 hp
15.4 kW
Belt (tested):28.0 hp
20.9 kW
power test details ...

1932 - 1939

Row-Crop tractor

Nebraska Tractor Test 221

Nebraska Tractor Test 221
Kerosene 4-speed 2WD April 3 - 16, 1934 Link: Nebraska Tractor Test 221 file
Belt power (max):	23.11 hp 17.2 kW
Belt fuel use (max):	2.2 gal/hour 8.3 l/hour
Drawbar performance
Max power:	15.39 hp 11.5 kW
Gear 2 used for power test.
Max pull:	2334 lbs 1058 kg
Gear 1 used for pull test.

Nebraska Tractor Test 264

Nebraska Tractor Test 264
Kerosene 4-speed 2WD July 20 - 29, 1936 Link: Nebraska Tractor Test 264 file
Belt power (max):	28.0 hp 20.9 kW
Belt fuel use (max):	3.1 gal/hour 11.7 l/hour
Drawbar performance
Max power:	20.5 hp 15.3 kW
Gear 3 used for power test.
Max pull:	2799 lbs 1269 kg
Gear 1 used for pull test.

Nebraska Tractor Test 276

Nebraska Tractor Test 276
Kerosene 4-speed 2WD November 5 - 12, 1936 Link: Nebraska Tractor Test 276 file
Belt power (max):	27.84 hp 20.8 kW
Belt fuel use (max):	2.8 gal/hour 10.6 l/hour
Drawbar performance
Max power:	20.66 hp 15.4 kW
Gear 3 used for power test.
Max pull:	2927 lbs 1327 kg
Gear 1 used for pull test.

Farmall F-20 Engine

Farmall F-20 Engine International Harvester 3.6L 4-cyl distillate Fuel tank:13 gal
49.2 L
Aux. fuel:0.875 gal
3.3 L
Engine details ...

1932 - 1939

Row-Crop tractor

Engine Detail

Engine Detail
International Harvester
distillate
4-cylinder
liquid-cooled vertical I-head
Displacement:	220.9 ci 3.6 L
Bore/Stroke:	3.75x5.00 inches 95 x 127 mm
Rated RPM:	1200
Firing order:	1-3-4-2
Coolant capacity:	40 qts 37.9 L (early)
	29 qts 27.4 L (late)

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
Brakes:mechanical band
Cab:Open operator station.
Transmission:4-speed sliding gear
Transmission details ...

1932 - 1939

Row-Crop tractor

Transmission

Transmission
Type:	sliding gear
Gears:	4 forward and 1 reverse
Clutch:	279.4mm mechanical dry disc

Speeds

Speeds

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:transmission
Rear RPM:540 (1.125)
Engine RPM:505@1200

Dimensions & Tires

Dimensions & Tires Wheelbase:85 inches
215 cm
Weight:4400 lbs
1995 kg
Front tire:25x4
Rear tire:40x6
Full dimensions and tires ...

1932 - 1939

Row-Crop tractor

Farmall F-20 Tires

Farmall F-20 Tires
Ag front:	25x4 (steel)
Ag rear:	40x6 (steel)
	42x12 (steel)
	9.00x36

Dimensions

Dimensions
Wheelbase:	85 inches 215 cm
Length:	140 inches 355 cm
Width:	86 inches 218 cm
Height (steering wheel):	67 inches 170 cm
Height (hood):	58 inches 147 cm
Weight:	4400 lbs 1995 kg
Front tread:	8.5 inches 21 cm
Rear tread:	74 inches 187 cm
Rear tread:	57 inches 144 cm*Narrow and Fairway model F-20

F-20 Serial Numbers

F-20 Serial Numbers Location:Serial number plate under the fuel tank of the Farmall F-20.
photo of F-20 serial number
1932:FA-501
1933:------
1934:FA-3001
1935:FA-9760
1936:FA-41123
1937:FA-72982
1938:FA-112201
1939:FA-136042
Final:FA-148810
1934:TA-135000 (old style countershaft)

how to read serial numbers...