Farmall F-20
Built: 1932-1939 · Series: Other models
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Farmall – other models: the collective page of US tractors outside the named ranges, from the row-crop pioneers F-20 and F-30 through the BM and Super H to the numbered series 460 to 706, 12.5 to 84 kW
This page gathers the Farmall tractors the register could not assign to a named range – spanning the whole history of the International Harvester (IH) brand. The F series of the 1930s (F-20, F-30) traces back to the Farmall Regular introduced in 1924, the first mass-built row-crop tractor with a narrow front wheel for working between rows; they ran on petrol or the cheaper distillate or kerosene tractor fuel. The letter series of the 1940s brought the B, BM and BMD as smaller models with a diesel option (D) and Super versions with increased power. In 1958 IH switched to a three-digit numbered series, in which the first digit indicates the size and the last the equipment level – the 460, 504, 544 and 706 mark progressively larger and more modern tractors of that period, and Hi-Clear and High Crop mark versions with raised ground clearance for tall crops such as maize.
Read on 3 more paragraphs
The register lists here 20 versions with 12.5 to 84 kW from four- to six-cylinders of 1,853 to 6,668 cm³ displacement, unladen weights from 1,202 to 5,035 kg, lengths from 2,718 to 4,191 mm and widths from 1,422 to 2,794 mm; the engines ran on petrol, distillate fuel or diesel, depending on model year and version.
Farmall is regarded as the defining American tractor brand of the 20th century, and with the row-crop concept it stood at the start of modern field-tractor development in the United States, before IH scaled the brand back in the 1970s in favour of the International Harvester name.
On the early F and letter-series models, originality, engine condition and the availability of carburettor and ignition parts count, on the numbered models of the 1960s the state of gearbox, clutch and hydraulics, and on the High Crop versions wear on stub axles; spares run through the Case IH network and specialist Farmall dealers.
Sources: SpecCodex register, model data: Farmall (weitere Modelle), Case IH (Nachfolgemarke, Hersteller)
Technical data
Engine
| Engine make | Internationalcorrect |
|---|---|
| Fuel | distillatecorrect |
| Power | 28 hpcorrect |
| Rated speed | 1,200 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 3,620 cm³ (221 ci)correct |
| Bore | 3.75 in (95.2 mm)correct |
| Stroke | 5 in (127 mm)correct |
| Naturally aspirated | naturally aspiratedcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,556 mmcorrect |
|---|---|
| Length | 139 in (3530.6 mm)correct |
| Width | 2,203 mmcorrect |
| Width | 87 in (2209.8 mm)correct |
| Height | 1,702 mmcorrect |
| Height | 76 in (1930.4 mm)correct |
| Wheelbase | 2,159 mm (85 in)correct |
| Turning circle | 16 ftcorrect |
| Unladen weight | 1,792 kg (3,950 lbs)correct |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | sliding-gear transmissioncorrect |
| Gearbox make | Internationalcorrect |
| Forward gears | 4correct |
| Reverse gears | 1correct |
| Front tyres | 6.00-16 (steel 25"x4" standard)correct |
| Rear tyres | 9.00-36 (steel 42"x12" standard)correct |
| Top speed | 6 km/hcorrect |
Origin and approval
| Plant | Farmall Works, Rock Island, Illinois, USAcorrect |
|---|---|
| Units built | 148.69correct |
Other data
| Drawbar output | 21correct |
|---|---|
| Linkage category | Drawbarcorrect |
| List price when new | $1190 (1939)correct |
| Predecessor | Farmall Regularcorrect |
| Successor | Farmall Hcorrect |
Frequently asked questions
How much power does the Farmall F-20 have?
The Farmall F-20 delivers 28 hp.
How much does the Farmall F-20 weigh?
The unladen weight is 1,792 kg.
What engine does the Farmall F-20 have?
4 cylinders, 3,620 cm³ displacement, distillate.
How fast does the Farmall F-20 go?
Top speed is 6 km/h.
What are the dimensions of the Farmall F-20?
3,556 mm × 2,203 mm × 1,702 mm.
When was the Farmall F-20 built?
Production years: 1932-1939.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 41 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
Sources: Tractor & Construction Plant Wiki (CC BY-SA 3.0) (retrieved August 2026) · Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved September 2026) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
