Ford 641 Specifications - Ford 641 Specs

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This tractor was one of the models that made the 601 Workmaster series. An orchard variant was also available, with a model number of 641-21.
Production
Manufacturer: Ford
Factory: Highland Park, Michigan, USA
Original price (USD), $3,096 (1961 ),
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
Capacity
Fuel: 13 gal [49.2 L]
Hydraulic system: 2 gal [7.6 L]
Rear axle: 8 qts [7.6 L]
3-Point Hitch
Rear Type: I
Rear lift: 1,250 lbs [567 kg]
Power Take-off (PTO)
Rear PTO: transmission
Rear RPM: 540
Dimensions & Tires
Weight: 3,291 lbs [1492 kg]
Front tire: 5.50-16
Rear tire: 11-28
641 Serial Numbers
Location: Transmission case, top left, behind the starter.
Ford 641 Power
Engine (gross): 48.4 hp [36.1 kW]
Belt (claimed): 32 hp [23.9 kW]
Plows: 2 (14-inch)
Drawbar (tested): 29.82 hp [22.2 kW]
PTO (tested): 31.78 hp [23.7 kW]
Belt (tested): 33.65 hp [25.1 kW]
Mechanical
Chassis: 4x2 2WD
Steering: manual, power assist optional
Brakes: differential mechanical expanding shoe
Cab: Open operator station.
Hydraulics
Capacity: 2 gal [7.6 L]
Total flow: 4 gpm [15.1 lpm]
Electrical
Ground: positive (6V), negative (12V)
Charging system: generator
Charging amps: 20
Battery
Number: 1
Volts: 6 (gas/lp), 12 (diesel)
Amp-hours: 80 (6V), 135 (12V)
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Bore/Stroke: 3.4375x3.60 inches [87 x 91 mm]
Emissions: Tier 0
Power (gross): 48.4 hp [36.1 kW]
Air cleaner: oil bath
Compression: 7.5:1
Rated RPM: 2200
Torque: 126.8 lb-ft [171.9 Nm]
Torque RPM: 1600
Firing order: 1-2-4-3
Starter volts: 6
Oil capacity: 5 qts [4.7 L]
Oil change: 100 h
Coolant capacity: 15 qts [14.2 L]
Sparkplug: 14MM
Sparkplug gap: 0.025 inches [0.635 mm] (min), 0.028 inches [0.711 mm] (max)
Engine Detail
Ford EAE Red Tiger, gasoline, 4-cylinder 8-valve, liquid-cooled vertical inline, 134 ci [2.2 L]
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SAE 80 Mild EP
Transmission
Manufacturer: Ford
Type: unsynchronized gear
Gears: 4 forward and 1 reverse
Oil capacity: 6 qts [5.7 L]
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Previous model: Ford 640
Dimensions
Weight (operating): 3,291 lbs [1492 kg]
Weight (ballasted): 5,523 lbs [2505 kg]
Front tread: 52 to 80 inches [132 to 203 cm]
Rear tread: 52 to 76 inches [132 to 193 cm]
Ford 641 Tires
Ag front: 5.50-16
Ag rear: 11-28