Technical register for agricultural, construction and commercial machinery · sourced data

International Harvester FS

Built: 1940–1949 · Series: F-Reihe

More machines from model year 1940

The F-Reihe series from International Harvester includes the FS. Production: 1940–1949. The engine delivers 20 hp (14.6 kW), has 4 cylinders, with a displacement of 2,040 cm³. Rated speed is 1,650 rpm. The machine is 3,200 mm long, 1,900 mm wide and 1,700 mm high. The unladen weight is 1,710 kg. The wheelbase measures 1,990 mm. Ground clearance is 380 mm. Top speed is 6.2 km/h. Transmission: 4V/1R. The engine is water-cooled. Tyres: front 610 X 90, rear 1370 X 150. The fuel is petrol. The bore measures 80 mm. The stroke is 101.6 mm. Around 1636 units were built. The F-Reihe series covers 4 models. Rated output within it ranges from 20 to 25 hp; the FS sits at the bottom of that range with 20 hp. Its immediate neighbours are the DF 25 (A/T) above it with 25 hp. Unladen weight within it ranges from 1,710 to 1,970 kg; here the FS sits at the bottom of that range with 1,710 kg. 391 International Harvester models across 45 series are on record.

International Harvester F-Reihe – collective page of IHC's DF 25 to FS types: two- to four-cylinder engines of 2,040 to 2,356 cm³, 14.6 to 18.3 kW, diesel and petrol versions

This collective page gathers International Harvester tractors listed in the register under the type designations DF 25 (A/T), FG, FG D-2 and FS. The letter F in the type designation was used by International Harvester across several ranges, and the suffixes D and G usually distinguish the diesel from the petrol version of the same basic design, as is also visible in this grouping.

Read on 3 more paragraphs

The register lists 4 versions with 14.6 to 18.3 kW from two- to four-cylinder engines of 2,040 to 2,356 cm³ displacement, two of them with a diesel engine and two with a petrol engine, unladen weights from 1,710 to 1,970 kg and rated speeds from 1,500 to 1,800 rpm; lengths range from 3,040 to 3,200 mm, widths from 1,640 to 2,000 mm, heights from 1,600 to 1,800 mm.

The F types gathered on this page cover a mid-power segment of classic field tractors and exemplify the range of drivetrain variants with which International Harvester offered both diesel and petrol tractors of the same power class across different markets.

On a used IHC F-type tractor, the condition of the respective engine counts, for the diesel versions especially the injection pump and injectors, for the petrol versions the carburettor and ignition system, along with rust on the frame and sheet-metal parts and the tightness of the gearbox and axles; because production has ended, parts are mostly only available through specialist dealers and collector circles.

Sources: SpecCodex register, model data: International Harvester F-Reihe

Technical data

Engine

Fuelpetrolcorrect
Power20 hp (14.6 kW)correct
Rated speed1,650 rpmcorrect
Cylinders4correct
Displacement2,040 cm³correct
Bore80 mmcorrect
Stroke101.6 mmcorrect
Coolingwater-cooledcorrect

Dimensions and weights

Length3,200 mmcorrect
Width1,900 mmcorrect
Height1,700 mmcorrect
Wheelbase1,990 mmcorrect
Ground clearance380 mmcorrect
Unladen weight1,710 kgcorrect

Drivetrain and chassis

Driverear-wheel drivecorrect
Gearbox4V/1Rcorrect
Front tyres610 X 90correct
Rear tyres1370 X 150correct
Top speed6.2 km/hcorrect

Origin and approval

Units built1,636correct

Where this model stands

Power-to-weight ratio: 8.5 kW/t (15 kW / 1.7 t)

Power class: Compact (< 40 hp)

Stronger than 7% of the tractors in the register — out of 15,663 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the International Harvester FS have?

The International Harvester FS delivers 20 hp.

How much does the International Harvester FS weigh?

The unladen weight is 1,710 kg.

What engine does the International Harvester FS have?

4 cylinders, 2,040 cm³ displacement, Benzin.

How fast does the International Harvester FS go?

Top speed is 6.2 km/h.

What are the dimensions of the International Harvester FS?

3,200 mm × 1,900 mm × 1,700 mm.

When was the International Harvester FS built?

Production years: 1940–1949.

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.

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This page carries 21 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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Other models in this series

Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data

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