WhichTractor
  • Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1971–1974

It sits on the utility/standard-size boundary, so either size is a fair description. WhichTractor size, not the maker’s category

Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is

Fiat 650-S (DT) specs: hp, weight, years

O.M.-FIAT CN 3 three-cylinder diesel. The manufacturer claimed 69.1 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

69.1 hp

51.5 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Fiat 650 S/650 S/DT”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

Weight
6,338 lb
3-point lift
4,960 lb
Hyd. flow
7.6 gpm
Top speed
14.9 mph

Fiat 650-S (DT) specs: key facts

  • The Fiat 650-S (DT) was built from 1971 to 1974.

  • The Fiat 650-S (DT) has a claimed engine power (gross or net not stated) of 51.5 kW (69.1 hp); it has no measured PTO figure.

  • The Fiat 650-S (DT) was offered in two-wheel-drive and four-wheel-drive versions.

  • The Fiat 650-S (DT) has a O.M.-FIAT CN 3 engine, a 3-cylinder 3.71 L diesel unit.Source 2

  • The Fiat 650-S (DT) weighs 2,875 kg (6,338 lb) unladen.

  • The Fiat 650-S (DT) has a rear PTO running at 540/1000 rpm.

  • The three-point hitch of the Fiat 650-S (DT) lifts 2,250 kg (4,960 lb) at the lower-link ends.

  • The hydraulic pump of the Fiat 650-S (DT) delivers 28.8 L/min (7.6 gpm).

Source · Traktorenlexikon, “Fiat 650 S/650 S/DT”

How does the 650-S (DT) compare with its class?

  • Limitation:

    Seven forward gears is low for its class — 42% below the median of 12 across the 384 machines within 10% of its power that hold this figure.

Derived by WhichTractor from 393 comparable records. How we work this out

Illustration of the 1971–1974 Fiat 650-S (DT), a 69 hp farm tractor, four-wheel-drive version, a drawing generated from its specification record
Illustration — not a photograph · four-wheel-drive version

How much horsepower does a 650-S (DT) have?

The only figure for the 650-S (DT) is 69.1 hp (51.5 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.

Engine, claimed (gross/net not stated)
69.1 hp

Source · Traktorenlexikon, “Fiat 650 S/650 S/DT”

What engine is in a 650-S (DT)?

A 650-S (DT) has an O.M.-FIAT CN 3, a 3-cylinder 3.71 L diesel engine.

Engine — 650-S (DT) engine specifications
Make & modelO.M.-FIAT CN 3Source 2
Cylinders3, liquid-cooledSource 2
Displacement226.2 ci · 3.71 LSource 2
Max torque203 lb·ft · 275 N·m @ 1,300 rpm
Electrical system12 V

Source · Traktorenlexikon, “Fiat 650 S/650 S/DT”

How much will a 650-S (DT) lift, and what is its hydraulic flow?

A 650-S (DT) lifts 4,960 lb (2,250 kg) at the lower-link ends of its Category 2 three-point hitch.

Hydraulics & PTO — 650-S (DT) hydraulics and PTO specifications
Pump flow7.6 gpm · 28.8 L/min
Pressure2,843 psi · 196 bar
Hitch categoryCategory 2
Lift at ends4,960 lb · 2,250 kg
Rear PTO540/1000 rpm @ 1,830 engine rpm
PTO shaft1 3/8"- 6 splines or 1 3/8"- 21 part

Source · Traktorenlexikon, “Fiat 650 S/650 S/DT”

What transmission does a 650-S (DT) have?

Transmission specifications for the 650-S (DT) are below.

Transmission — 650-S (DT) transmission specifications
ClutchDry FEREDO double clutch
BrakesPedal-operated FERODO disc brake acting on differential shafts
SteeringHydraulic GEMMER power steering
Top speed14.9 mph · 24 km/h

Source · Traktorenlexikon, “Fiat 650 S/650 S/DT”

How much does a 650-S (DT) weigh?

A 650-S (DT) weighs 6,338 lb (2,875 kg) unladen.

Weights & dimensions — 650-S (DT) weights and dimensions
Unladen weight6,338 lb · 2,875 kgDT: 3,275
Wheelbase91.3 in · 2,320 mmDT: 2,370
Length148.4 in · 3,770 mm
Width69.3 in · 1,760 mm
Height68.5 in · 1,740 mm
Ground clearance20.1 in · 510 mmDT: 370
Front track57.1–77.2 in · 1,450–1,960 mmDT: 1,580
Rear track51.4–82.9 in · 1,305–2,105 mm
Turning radius, braked12.0 ft · 3.65 mDT: 4,500

Source · Traktorenlexikon, “Fiat 650 S/650 S/DT”

What oil does a 650-S (DT) take, and how much?

A 650-S (DT) engine takes 13.2 qt (12.5 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

650-S (DT) fluid capacities, grades and service intervals
SystemCapacity
Engine oil13.2 qt · 12.5 LSource: Traktorenlexikon, “Fiat 650 S/650 S/DT” · single source, not independently verified
Transmission & hydraulic25.4 qt · 24.0 LSource: Traktorenlexikon, “Fiat 650 S/650 S/DT” · single source, not independently verified
Cooling system18.0 qt · 17.0 LSource: Traktorenlexikon, “Fiat 650 S/650 S/DT” · single source, not independently verified

Always confirm against the operator’s manual for your machine before service.

Which tractors compare with a 650-S (DT)?

Within 10% of its 55.2 hp at the PTO as the maker claimed it, with no laboratory test on file, the same type, and first built within 15 years of it.

Common questions about the Fiat 650-S (DT)

Is a 650-S (DT) two-wheel drive or four-wheel drive?

The Fiat 650-S (DT) was offered in two-wheel-drive and four-wheel-drive versions.

What PTO does a 650-S (DT) have?

A 650-S (DT) has a 540/1000 rpm rear PTO on a 1 3/8"- 6 splines or 1 3/8"- 21 part shaft.

Sources and how this page was built

Compiled from Traktorenlexikon, “Someca 650”; and Traktorenlexikon, “Fiat 650 S/650 S/DT”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: Fiat 650 S/650 S/DT — CC BY-SA 4.0, WIKIBOOKS-TL-121827 · revision 1074413. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: Someca 650 — CC BY-SA 4.0, WIKIBOOKS-TL-121250 · revision 1065768. Wikibooks contributors (Traktorenlexikon). Original document