Fiat 650S Special

The Fiat 650S Special is a tractor produced by Fiat. It is equipped with a 225.84 ci 3.7 L engine. The listed engine power is Diesel (listed): 70 hp / 52.2 kW. Transmission: 14 forward and 4 reverse. Operating weight: 6371 to 7165 pounds.

Engine Power

Diesel (listed): 70 hp / 52.2 kW

Fuel & Capacities

20.6 gal 78.0 L

Transmission

14 forward and 4 reverse

Operating Weight

6371 to 7165 pounds

Overview

	1971 - 1974 Utility tractor

Production
Manufacturer	Fiat
Utility tractor

Fiat 650S Engine
Fiat 3.7L 3-cyl diesel
Fuel tank	20.6 gal 78.0 L
Engine details ...

Fiat 650S Power
Engine	70 hp 52.2 kW

Mechanical
Two- or four-wheel drive
Steering	manual
Steering	power OptOptional
Open operator station.

Hydraulics
Type	open center
Pump flow	6.2 gpm 23.5 lpm

Tractor hitch
Rear Type	II
Control	position and draft control
Rear lift	4400 lbs 1995 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000 (1.375)
Engine RPM	540@1830
	1000@1973

Dimensions & Tires
4WD Wheelbase	93.3 inches 236 cm
Weight	6371 to 7165 pounds
Front tire	7.50-18
2WD Rear tire	13.6-36
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

References

600DT Special published in 1971, by Fiat

Engine

Engine Detail — 225.84 ci / 3.7 L Diesel

Manufacturer	Fiat OM CN3
Fuel Type	Diesel
Configuration	3-cylinder, liquid-cooled
Displacement	225.84 ci 3.7 L
Bore/Stroke	4.33x5.12 inches 110 x 130 mm
Power	70 hp 52.2 kW
Compression	17.4:1
Rated RPM	2200
Starter volts	12

Transmission

Transmission options
7-speed partially synchronized
14-speed creeper

Transmission — 7 forward and 2 reverse partially synchronized

Type	partially synchronized
Gears	7 forward and 2 reverse
With 14.9/14-30 rear tires.

Transmission
Type	creeper
Gears	14 forward and 4 reverse

Dimensions

Fiat 650S Tires
2WD Standard tires (ag)	Front: 7.50-18. Rear: 13.6-36
4WD Standard tires (ag)	Front: 9.5/9-24. Rear: 16.9/14-30
4WD Optional tires (ag)	Front: 9.5/9-24. Rear: 13.6/12-36
4WD. Rear: Optional tires (ag)	Front: 11.2/10-24

Dimensions
4WD Wheelbase	93.3 inches 236 cm
Length	142.3 inches 361 cm
4WD Height (steering wheel)	69.8 inches 177 cm
4WD Height (hood)	63 inches 160 cm
2WD Weight	6371 lbs 2889 kg
4WD Weight	7165 lbs 3250 kg
4WD Ground clearance	16.9 inches 42 cm

Photos

Fiat 650S Special tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Fiat 650S Special based on its 70 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	3 to 4 Bottom (16")3 - 4 铧 (40 cm)	Heavy Duty	Suitable for medium loam and stubble turnover.
Rotary Cutter / MowerMowing & Clearing	7 to 8 ft (84-96 in)2.1 - 2.4 m	Heavy Duty	Heavy-duty twin spindle cutter for overgrown acreage.
Rotary TillerSeedbed Prep	78 to 84 in200 - 215 cm	Heavy Duty	Heavy commercial tiller with multi-speed gearbox.
Disc HarrowSecondary Tillage	7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙	Medium Duty	Field leveling and clod breaking behind plows.
Hay BalerHay & Forage	4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机	Heavy Duty	Silage and dry hay; 540 RPM PTO with slip-clutch.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Fiat 650S Special.

Estimated Continuous Field Runtime: 5.7 hrs

Approximately 5.7 hours of continuous field operation at ~75% rated power on a full tank (20.6 gal / 78 L).

Estimated 75% Load Fuel Burn~3.6 gal/hr (13.8 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours