Production
| Description | Utility tractor / Built in Highland Park, Michigan, USA / Original price was $3,096 in 1961 / An orchard variant was also available, with a model number of 641-21. |
|---|---|
| Manufacturer | Ford |
Engine
| Air cleaner | oil bath / oil bath |
|---|---|
| Bore/Stroke | 3.4375x3.60 inches (87 x 91 mm) / 3.562x3.60 inches (90 x 91 mm) / 3.4375x3.60 inches (87 x 91 mm) |
| Compression | 7.5:1 / 16.8:1 / 7.5:1 |
| Coolant capacity | 15 qts (14.2 L) |
| Description | Ford EAE Red Tiger / gasoline / 4-cylinder 8-valve / liquid-cooled vertical inline / Ford / diesel / 4-cylinder 8-valve / liquid-cooled vertical inline / Ford EAE Red Tiger / LP gas / 4-cylinder 8-valve / liquid-cooled vertical inline |
| Displacement | 134 ci (2.2 L) / 144 ci (2.4 L) / 134 ci (2.2 L) |
| Emissions | Tier 0 |
| Firing order | 1-2-4-3 / 1-2-4-3 / 1-2-4-3 |
| Power (gross) | 48.4 hp (36.1 kW) / 42.7 hp (31.8 kW) |
| Rated RPM | 2200 / 2200 / 2200 |
| Sparkplug | 14MM |
| Sparkplug gap | 0.025 inches (min) (0.635 mm) |
| Starter volts | 6 / 12 / 6 |
| Torque | 126.8 lb-ft (171.9 Nm) |
| Torque RPM | 1600 |
| Oil capacity | 5 qts (4.7 L) |
| Oil change | 100 h |
| Engine type | Ford 2.2L 4-cyl gasoline / Ford 2.4L 4-cyl diesel / Ford 2.2L 4-cyl LP gas |
| Engine type | Ford 2.2L 4-cyl gasoline / Ford 2.4L 4-cyl diesel / Ford 2.2L 4-cyl LP gas |
| Belt (claimed) | 32 hp (23.9 kW) |
| Belt (tested) | 33.65 hp (25.1 kW) |
| Drawbar (tested) | 29.82 hp (22.2 kW) |
| Engine (gross) | 48.4 hp (36.1 kW) |
| Plows | 2 (14-inch) |
| PTO (tested) | 31.78 hp (23.7 kW) |
Transmission
| Clutch | 254mm dry disc / dry disc |
|---|---|
| Description | The 12-speed adds a mechanical over/under to the basic four-speed transmission. |
| Gears | 4 forward and 1 reverse / 12 forward and 3 reverse |
| Manufacturer | Ford |
| Oil capacity | 6 qts (5.7 L) |
| Oil type | SAE 80 Mild EP |
| Type | unsynchronized gear / unsynchronized gear |
| Transmission type | 4-speed unsynchronized gear / 12-speed unsynchronized gear |
| Transmission type | 4-speed unsynchronized gear / 12-speed unsynchronized gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Differential mechanical expanding shoe brakes |
| Drive type | Two-wheel drive |
| Steering | manual |
Capacity
| Fuel | 13 gal (49.2 L) |
|---|---|
| Hydraulic system | 2 gal (7.6 L) |
| Rear axle | 8 qts (7.6 L) |
Hydraulics
| Capacity | 2 gal (7.6 L) |
|---|---|
| Total flow | 4 gpm (15.1 lpm) |
| Type | open center |
Hitch
| Control | position and draft control |
|---|---|
| Rear lift | 1250 lbs (567 kg) |
| Rear Type | I |
PTO
| Rear PTO | transmission |
|---|---|
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery AH | 80 (6V) |
|---|---|
| Battery volts | 6 (gas/lp) |
| Charging amps | 20 |
| Charging system | generator |
| Ground | positive (6V) |
Dimensions & Tires
| Ballasted weight | 5523 lbs (2505 kg) |
|---|---|
| Front tread | 52 to 80 inches (132 to 203 cm) |
| Operating weight | 3291 lbs (1492 kg) |
| Rear tread | 52 to 76 inches (132 to 193 cm) |
| Front tire | 5.50-16 |
| Rear tire | 11-28 |
| Weight | 3291 lbs (1492 kg) |
| Ag front | 5.50-16 |
| Ag rear | 11-28 |
641 Serial Number Location
| Description | Transmission case, top left, behind the starter. |
|---|
641 Serial Numbers
| 1957 | 1001 |
|---|---|
| 1958 | 11977 |
| 1959 | 58312 |
| 1960 | 105943 |
| 1961 | 131427 |
| 1962 | 155531 |
| Description | FAQ: How to read a serial number table. |
Ford 641 attachments
| Description | front-end loader |
|---|
Nebraska Tractor Test 642
| Belt fuel use (max) | 3.4 gal/hour (12.9 l/hour) |
|---|---|
| Belt power (max) | 33.65 hp (25.1 kW) |
| Description | Gasoline 12-speed 2WDMarch 20 - 31, 1958Link: Nebraska Tractor Test 642 file / Drawbar performance / Gear 5 used for power test. / Gear 1 used for pull test. |
| Max power | 29.82 hp (22.2 kW) |
| Max pull | 4,101 lbs (1860 kg) |
Nebraska Tractor Test 686
| Description | Diesel 12-speed 2WDMarch 11 - 18, 1959Link: Nebraska Tractor Test 686 file / PTO performance / Drawbar performance / Gear 5 used for power test. / Gear 1 used for pull test. |
|---|---|
| Fuel use | 2.2 gal/hour (8.3 l/hour) / 1.8 gal/hour (6.8 l/hour) / 2.3 gal/hour (8.7 l/hour) |
| Max power | 29.33 hp (21.9 kW) |
| Max pull | 4,230 lbs (1918 kg) |
| Power at rated engine speed | 31.78 hp (23.7 kW) |
| Power at rated PTO speed | 25.29 hp (18.9 kW) |
References
| Description | Tractors For Industrial Use published in 1958, by Ford / 1200 Farm Loaders published in 1966, by Ford / 1955-1960 Tractor Shop Manual (SE-8175) published in 1961 / Power Up with Ford published in 1957 / Diesel Tractors published in 1959, by Ford / New Ford 601 Series Workmaster Tractors published in 1957 / New Ford Workmaster Tractors published in 1957 |
|---|
Tractor Tests
| Description | NTTL 642: gasoline 12-speed 2WD / NTTL 686: diesel 12-speed 2WD |
|---|
Variants
| 611 | Select-O-Speed, no PTO |
|---|---|
| 621 | Four-speed, no PTO or 3-point |
| 631 | Four-speed, no PTO |
| 641 | Four-speed |
| 651 | Five-speed |
| 661 | Five-speed, live PTO |
| 671 | Select-O-Speed |
| 681 | Select-O-Speed, dual-speed PTO |