Wikitractor

Ford 641

Production ended · 2WD

PTO power · tested

31.8 hp

Weight
3,291 lb
Engines
3 Gasoline · Diesel · LP gas
Built
no record
Price new · 1961
$3,096

Power

Engine48.4 hp gross
PTO31.8 hp tested
Drawbar29.8 hp tested
Belt pulley32 hp claimed
Belt pulley, tested33.6 hp
Listed power48 hp engine basis
Plows rated2

Engines

Ford 2.2L 4-cyl gasolineGasoline · 4 cyl134 ci
Ford 2.4L 4-cyl dieselDiesel · 4 cyl144 ci
Ford 2.2L 4-cyl LP gasLP gas · 4 cyl134 ci
Engine details
Ford 2.2L 4-cyl gasoline
Bore × stroke
3.44 in × 3.6 in
Rated speed
2,200 rpm
Rated power
48.4 hp
Torque
127 lb·ft at 1,600 rpm
Compression
7.5:1
Cooling
liquid-cooled vertical inline
Emissions
Tier 0
Firing order
1-2-4-3
Notes
4-cylinder 8-valve
Ford 2.4L 4-cyl diesel
Bore × stroke
3.56 in × 3.6 in
Rated speed
2,200 rpm
Rated power
42.7 hp
Compression
16.8:1
Cooling
liquid-cooled vertical inline
Firing order
1-2-4-3
Notes
4-cylinder 8-valve
Ford 2.2L 4-cyl LP gas
Bore × stroke
3.44 in × 3.6 in
Rated speed
2,200 rpm
Compression
7.5:1
Cooling
liquid-cooled vertical inline
Firing order
1-2-4-3
Notes
4-cylinder 8-valve

Transmissions

4-speed unsynchronized gearunsynchronized gear4F / 1R
12-speed unsynchronized gearunsynchronized gear12F / 3R
Transmission notes

12-speed unsynchronized gear: The 12-speed adds a mechanical over/under to the basic four-speed transmission.

Weight

Weight3,291 lb operating
Ballasted5,523 lb

Dimensions

Wheelbaseno record
Lengthno record
Front tread, narrowest52 in
Front tread, widest80 in
Rear tread, narrowest52 in
Rear tread, widest76 in

Capacities

Fuel tank13 gal
Hydraulic system2 gal

Hydraulics

Systemopen center
Pump flowno record
Total flow4 gpm

Hitch

Rear hitch categoryI
Controlposition and draft control
Rear lift capacity1,250 lb

PTO

Rear PTOtransmission
Rear PTO speeds540 (1.375)
Engine rpm at PTO speed540@1485

Chassis

Drive2WD
Steeringmanual
BrakesDifferential mechanical expanding shoe brakes
CabOpen operator station

Tires

Front5.50-16
Rear11-28

Electrical

System voltage6 V
Battery capacity80 Ah
Charginggenerator
Charging output20 A
Groundpositive (6V)

Production

Price new$3,096 (1961)
FactoriesHighland Park, Michigan, USA
Built byFord

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

Serial numbers

Transmission case, top left, behind the starter.

YearFirst serial
19571001
195811977
195958312
1960105943
1961131427
1962155531

Literature

  • Tractors For Industrial Use Ford, 1958
  • 1200 Farm Loaders Ford, 1966
  • Power Up with Ford 1957
  • Diesel Tractors Ford, 1959
  • New Ford 601 Series Workmaster Tractors 1957
  • New Ford Workmaster Tractors 1957
  • 1955-1960 Tractor Shop Manual (SE-8175) 1961
  • Owner's Manual Series 601 and 801 (SE6085C) 1957
  • Owner's Manual Series 601 D and 801 D (SE6970A) 1959

Attachments

  • front-end loader