Production
| Description | Row-Crop tractor / Built in Rock Island, Illinois, USA / Original price was $1000 in 1936 |
|---|---|
| Manufacturer | Farmall (a part of International Harvester) |
| Total built | 154,398 |
Engine
| Aux. fuel | 0.875 gal (3.3 L) |
|---|---|
| Engine type | International Harvester 3.6L 4-cyl distillate |
| Fuel tank | 13 gal (49.2 L) |
| Bore/Stroke | 3.75x5.00 inches (95 x 127 mm) |
| Coolant capacity | 40 qts (early) (37.9 L) |
| Description | International Harvester / distillate / 4-cylinder / liquid-cooled vertical I-head |
| Displacement | 220.9 ci (3.6 L) |
| Firing order | 1-3-4-2 |
| Rated RPM | 1200 |
| Belt (tested) | 28.0 hp (20.9 kW) |
| Drawbar (claimed) | 19.6 hp (14.6 kW) |
| Drawbar (tested) | 20.66 hp (15.4 kW) |
| Plows | 2 |
| PTO (claimed) | 26.67 hp (19.9 kW) |
Transmission
| Clutch | 279.4mm mechanical dry disc |
|---|---|
| Gears | 4 forward and 1 reverse |
| Transmission type | 4-speed sliding gear |
| Type | sliding gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Manual steering / Mechanical band brakes |
| Drive type | Two-wheel drive |
PTO
| Engine RPM | 505@1200 |
|---|---|
| Rear PTO | transmission |
| Rear PTO Type | 540 (1.125) |
Dimensions & Tires
| Front tread | 8.5 inches (21 cm) |
|---|---|
| Height (hood) | 58 inches (147 cm) |
| Height (steering wheel) | 67 inches (170 cm) |
| Length | 140 inches (355 cm) |
| Rear tread | 74 inches (187 cm) / 57 inches *Narrow and Fairway model F-20 (144 cm) |
| Weight | 4400 lbs (1995 kg) |
| Wheelbase | 85 inches (215 cm) |
| Width | 86 inches (218 cm) |
| Front tire | 25x4 |
| Rear tire | 40x6 |
| Weight | 4400 lbs (1995 kg) |
| Wheelbase | 85 inches (215 cm) |
| Ag front | 25x4 (steel) |
| Ag rear | 40x6 (steel) |
Belt Pulley
| Diameter | 14 inches (35 cm) |
|---|---|
| RPM | 654 |
| Speed | 2395 ft/min (730.00 meters/min) |
| Width | 6.5 inches (16 cm) |
F-20 Serial Number Location
| Description | Serial number plate under the fuel tank of the Farmall F-20. |
|---|
F-20 Serial Numbers
| 1932 | FA-501 |
|---|---|
| 1933 | ------ |
| 1934 | FA-3001 / TA-135000 (old style countershaft) |
| 1935 | FA-9760 |
| 1936 | FA-41123 |
| 1937 | FA-72982 |
| 1938 | FA-112201 |
| 1939 | FA-136042 |
| Description | FAQ: How to read a serial number table. |
| Final | FA-148810 |
Nebraska Tractor Test 221
| Belt fuel use (max) | 2.2 gal/hour (8.3 l/hour) |
|---|---|
| Belt power (max) | 23.11 hp (17.2 kW) |
| Description | Kerosene 4-speed 2WDApril 3 - 16, 1934Link: Nebraska Tractor Test 221 file / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Max power | 15.39 hp (11.5 kW) |
| Max pull | 2334 lbs (1058 kg) |
Nebraska Tractor Test 264
| Belt fuel use (max) | 3.1 gal/hour (11.7 l/hour) |
|---|---|
| Belt power (max) | 28.0 hp (20.9 kW) |
| Description | Kerosene 4-speed 2WDJuly 20 - 29, 1936Link: Nebraska Tractor Test 264 file / Drawbar performance / Gear 3 used for power test. / Gear 1 used for pull test. |
| Max power | 20.5 hp (15.3 kW) |
| Max pull | 2799 lbs (1269 kg) |
Nebraska Tractor Test 276
| Belt fuel use (max) | 2.8 gal/hour (10.6 l/hour) |
|---|---|
| Belt power (max) | 27.84 hp (20.8 kW) |
| Description | Kerosene 4-speed 2WDNovember 5 - 12, 1936Link: Nebraska Tractor Test 276 file / Drawbar performance / Gear 3 used for power test. / Gear 1 used for pull test. |
| Max power | 20.66 hp (15.4 kW) |
| Max pull | 2927 lbs (1327 kg) |
References
| Description | Farmall Tractor Model F-20 (MC-D 3075) published in 1932 / International Tractors - The Line That Offers You A Choice published in 1933, by International Harvester / McCormick-Deering Tractors - Modern Agricultural Power published in 1933, by International Harvester |
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Tractor Tests
| Description | NTTL 221: kerosene 4-speed 2WD / NTTL 264: kerosene 4-speed 2WD / NTTL 276: kerosene 4-speed 2WD |
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