9 material differences · fewer than 12

Tractor oneInternational Harvester FS1940–1949No measured PTO figureTractor twoJohn Deere Modell-M1947–1952No measured PTO figure

Which should you choose?

Read our verdict on the FS and the Modell-M → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

Field by field

9 material differences · 1 fields identical or within 5%, which is not counted as material

International Harvester FS and John Deere Modell-M, field by field
Field	FS	Modell-M	Gap
Engine
Engine power, claimed claimed	19.6 hp	20.4 hp	—
Transmission
Top speed declared	3.9 mph · 6.2 km/h	9.9 mph · 16 km/h	+158% Modell-M
Clutch declared	Single-disc dry clutch	Pedal-operated dry Auburn single-plate clutch	differs
Hydraulics & hitch
Pump flow declared	—	4.3 gpm · 16.1 L/min	—
Rear PTO speeds declared	550	546 rpm	differs
Weight & dimensions
Unladen weight declared	3,770 lb · 1,710 kg	3,929–4,292 lb · 1,782–1,947 kg	differs
Wheelbase declared	78.3 in · 1,990 mm	70.0 in · 1,778 mm	+12% FS
Length declared	126.0 in · 3,200 mm	102.0–125.2 in · 2,591–3,180 mm	differs
Width declared	74.8 in · 1,900 mm	50.8–89.4 in · 1,290–2,270 mm	differs
Ground clearance declared	15.0 in · 380 mm	21.0 in · 533 mm	+40% Modell-M
Fuel tank declared	58.1 qt · 55 L	40.0 qt · 37.9 L	+45% FS

Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.

International Harvester FS sources

Source

Source: Traktorenlexikon, “IHC FS”

John Deere Modell-M sources