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Tractor · 1957Unverified

Ford 671

Name: Ford 671
Brand: Ford

Ford 671 — 601 Workmaster Series · 48 hp. Reference specifications; pending source verification.

The Ford 671 is a tractor with a power rating of approximately 48 hp, positioning it at the lower end of its class in terms of power output. Produced between 1957 and 1961, this model features a 4-cylinder diesel liquid-cooled engine and a two-wheel drive configuration with a powershift transmission. The tractor's operating weight is specified as 1506 kg, and it is capable of handling operations on up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

48 hp

Weight

1506 kg

Catalogue coverage

Variants represented

Richest spec table

91 rows

Recorded power

48 hp

Recorded weight

1506 kg

Transmissions

10-speed full power shift

Production years

1957-1961

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerFordReference

Utility tractorReference

Built in Highland Park, Michigan, USAReference

Original price$3,222 (1961)Reference

This is one of the models that made the 601 Workmaster seriesReference

Two-wheel driveReference

SteeringmanualReference

Steeringpower assist optionalReference

Differential mechanical expanding shoe brakesReference

Open operator station.Reference

Variants

611Select-O-Speed, no PTOReference

621Four-speed, no PTO or 3-pointReference

631Four-speed, no PTOReference

641Four-speedReference

651Five-speedReference

661Five-speed, live PTOReference

671Select-O-SpeedReference

681Select-O-Speed, dual-speed PTOReference

Engine

Ford 2.2L 4-cyl gasolineReference

Ford 2.4L 4-cyl dieselReference

Ford 2.2L 4-cyl LP gasReference

Engine (gross)36.1 kWReference

Belt (claimed)23.9 kWReference

Plows2 (14-inch)Reference

Ford EAE Red TigerReference

gasolineReference

4-cylinder 8-valveReference

liquid-cooled vertical inlineReference

Displacement2.2 LReference

Bore/Stroke87 x 91 mmReference

EmissionsTier 0Reference

Power (gross)36.1 kWReference

Air cleaneroil bathReference

Compression7.5:1Reference

Rated RPM2200Reference

Torque171.9 NmReference

Torque RPM1600Reference

Firing order1-2-4-3Reference

Starter volts6Reference

Coolant capacity14.2 LReference

Sparkplug14MMReference

Sparkplug gap0.635 mmReference

Sparkplug gap0.711 mmReference

Oil capacity4.7 LReference

Oil change100 hReference

FordReference

dieselReference

Displacement2.4 LReference

Bore/Stroke90 x 91 mmReference

Power (gross)31.8 kWReference

Compression16.8:1Reference

Starter volts12Reference

LP gasReference

Transmission

10-speed full power shiftReference

TransmissionSelect-O-SpeedReference

Typefull power shiftReference

Gears10 forward and 2 reverseReference

Oil capacity7.6 LReference

Oil typeM2C41Reference

Capacities

Fuel49.2 LReference

Rear axle7.6 LReference

PTO & Hydraulics

Hydraulic system7.6 LReference

Capacity7.6 LReference

Total flow15.1 lpmReference

Rear TypeIReference

Rear lift567 kgReference

Rear PTOindependentReference

Rear PTO Type540Reference

Dimensions

Weight1506 kgReference

Front tire5.50-16Reference

Rear tire11-28Reference

Ag front5.50-16Reference

Ag rear11-28Reference

Front tread132 to 203 cmReference

Rear tread132 to 193 cmReference

671 Serial Numbers

Location:Transmission case, top left, behind the starter.Reference

19571001Reference

195811977Reference

195958312Reference

1960105943Reference

1961131427Reference

1962155531Reference

FAQ: How to read a serial number table.Reference

Electrical

Groundpositive (6V)Reference

Groundnegative (12V)Reference

Charging systemgeneratorReference

Charging amps20Reference

Battery volts6 (gas/lp)Reference

Battery volts12 (diesel)Reference

Battery AH80 (6V)Reference

Battery AH135 (12V)Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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