Ford 641: all source data
All 109 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Ford |
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| (no label) | Utility tractor |
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| (no label) | Built in Highland Park, Michigan, USA |
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| (no label) | Original price was $3,096 in 1961 |
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| (no label) | An orchard variant was also available, with a model number of 641-21. |
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Engine| (no label) | Ford 2.2L 4-cyl gasoline |
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| (no label) | Ford 2.4L 4-cyl diesel |
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| (no label) | Ford 2.2L 4-cyl LP gas |
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Transmission| (no label) | 4-speed unsynchronized gear |
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| (no label) | 12-speed unsynchronized gear |
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Power| Engine (gross) | 48.4 hp | 36.1 kW |
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| Belt (claimed) | 32 hp | 23.9 kW |
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| Plows | 2 (14-inch) |
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| Drawbar (tested) | 29.82 hp | 22.2 kW |
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| PTO (tested) | 31.78 hp | 23.7 kW |
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| Belt (tested) | 33.65 hp | 25.1 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Steering | manual |
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| Steering | power assist optional |
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| (no label) | Differential mechanical expanding shoe brakes |
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| (no label) | Open operator station. |
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Capacity| Fuel | 13 gal | 49.2 L |
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| Hydraulic system | 2 gal | 7.6 L |
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| Rear axle | 8 qts | 7.6 L |
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Hydraulics| Type | open center |
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| Capacity | 2 gal | 7.6 L |
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| Total flow | 4 gpm | 15.1 lpm |
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Hitch| Rear Type | I |
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| Control | position and draft control |
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| Rear lift | 1250 lbs | 567 kg |
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Pto| Rear PTO | transmission |
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| Rear PTO Type | 540 (1.375) |
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| Engine RPM | 540@1485 |
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Dimensions| Weight | 3291 lbs | 1492 kg |
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| Front tire | 5.50-16 |
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| Rear tire | 11-28 |
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Serial location| (no label) | Transmission case, top left, behind the starter. |
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Electrical| Ground | positive (6V) |
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| Ground | negative (12V) |
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| Charging system | generator |
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| Charging amps | 20 |
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| Battery volts | 6 (gas/lp) |
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| Battery volts | 12 (diesel) |
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| Battery AH | 80 (6V) |
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| Battery AH | 135 (12V) |
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Engine
Engine options| (no label) | Ford 2.2L 4-cyl gasoline |
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| (no label) | Ford 2.4L 4-cyl diesel |
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| (no label) | Ford 2.2L 4-cyl LP gas |
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Engine detail| (no label) | Ford EAE Red Tiger |
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| (no label) | gasoline |
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| (no label) | 4-cylinder 8-valve |
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| (no label) | liquid-cooled vertical inline |
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| Displacement | 134 ci | 2.2 L |
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| Bore/Stroke | 3.4375x3.60 inches | 87 x 91 mm |
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| Emissions | Tier 0 |
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| Power (gross) | 48.4 hp | 36.1 kW |
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| Air cleaner | oil bath |
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| Compression | 7.5:1 |
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| Rated RPM | 2200 |
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| Torque | 126.8 lb-ft | 171.9 Nm |
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| Torque RPM | 1600 |
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| Firing order | 1-2-4-3 |
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| Starter volts | 6 |
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| Coolant capacity (Coolant) | 15 qts | 14.2 L |
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| Sparkplug | 14MM |
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| Sparkplug gap | 0.025 inches (min) | 0.635 mm |
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| Sparkplug gap | 0.028 inches (max) | 0.711 mm |
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| (no label) | Ford |
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| (no label) | diesel |
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| (no label) | 4-cylinder 8-valve |
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| (no label) | liquid-cooled vertical inline |
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| Displacement | 144 ci | 2.4 L |
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| Bore/Stroke | 3.562x3.60 inches | 90 x 91 mm |
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| Power (gross) | 42.7 hp | 31.8 kW |
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| Air cleaner | oil bath |
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| Compression | 16.8:1 |
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| Rated RPM | 2200 |
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| Firing order | 1-2-4-3 |
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| Starter volts | 12 |
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| (no label) | Ford EAE Red Tiger |
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| (no label) | LP gas |
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| (no label) | 4-cylinder 8-valve |
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| (no label) | liquid-cooled vertical inline |
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| Displacement | 134 ci | 2.2 L |
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| Bore/Stroke | 3.4375x3.60 inches | 87 x 91 mm |
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| Compression | 7.5:1 |
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| Rated RPM | 2200 |
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| Firing order | 1-2-4-3 |
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| Starter volts | 6 |
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Engine oil| Oil capacity | 5 qts | 4.7 L |
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| Oil change | 100 h |
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Transmission
Transmission options| (no label) | 4-speed unsynchronized gear |
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| (no label) | 12-speed unsynchronized gear |
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Transmission| Manufacturer | Ford |
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| Type | unsynchronized gear |
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| Gears | 4 forward and 1 reverse |
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| Clutch | 254mm dry disc |
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| Oil capacity | 6 qts | 5.7 L |
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| Oil type | SAE 80 Mild EP |
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| Type | unsynchronized gear |
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| Gears | 12 forward and 3 reverse |
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| Clutch | dry disc |
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| (no label) | The 12-speed adds a mechanical over/under to the basic four-speed transmission. |
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Dimensions
Tires| Ag front | 5.50-16 |
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| Ag rear | 11-28 |
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Dimensions| Operating weight | 3291 lbs | 1492 kg |
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| Ballasted weight | 5523 lbs | 2505 kg |
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| Front tread | 52 to 80 inches | 132 to 203 cm |
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| Rear tread | 52 to 76 inches | 132 to 193 cm |
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