Tractor · 1957Unverified
Ford 621
Ford 621 — 601 Workmaster Series · 48 hp. Reference specifications; pending source verification.
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
Hover a source tag to verify
Overview
ManufacturerFordReference
Utility tractorReference
Built in Highland Park, Michigan, USAReference
Original price was $3,222 in 1961Reference
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
5-speed gearReference
12-speed unsynchronized gearReference
TypegearReference
Gears5 forward and 1 reverseReference
Clutch254mm dry discReference
Oil capacity7.6 LReference
Oil typeSAE 80 Mild EPReference
Typeunsynchronized gearReference
Gears12 forward and 3 reverseReference
Clutchdry discReference
The 12-speed adds a mechanical over/under to the basic four-speed transmission.Reference
Capacities
Fuel49.2 LReference
Rear axle7.6 LReference
Dimensions
Weight1506 kgReference
Front tire5.50-16Reference
Rear tire10-28Reference
Ag front5.50-16Reference
Ag rear10-28Reference
Ag rear11-28Reference
Rear tread121 to 193 cmReference
621 Serial Number Location
Transmission case, top left, behind the starter.Reference
621 Serial Numbers
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.