Serial Number Location
The serial number on the Ford 640 Tractor is located:
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Stamped on the left side of the engine block, just above the oil pan rail, near the starter motor
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Serial numbers begin with a numerical sequence only (no letter prefix)
Serial Numbers by Year:
| Year |
Serial Number Range |
| 1954 |
1 – 10614 |
| 1955 |
10615 – 77270 |
| 1956 |
77271 – 116367 |
| 1957 |
116368 and up |
Key Specifications
| Feature |
Specification |
| Engine |
2.2L (134 cu in) 4-cylinder gas or LP-gas |
| Horsepower |
~31 HP (23.1 kW) |
| PTO Power |
~27.6 HP (20.6 kW) |
| Transmission |
4-speed unsynchronized gear, 1 reverse |
| Fuel Capacity |
11 gal (41.6 L) |
| Operating Weight |
3,031 lbs (1,375 kg) |
Hydraulics
| Feature |
Specification |
| System Type |
Open center |
| Hydraulic Capacity |
8 gal (30.3 L) |
| 3-Point Hitch Category |
Category I |
| Lift Capacity |
1,250 lbs (567 kg) |
Dimensions
| Feature |
Measurement |
| Wheelbase |
75.2 in (191 cm) |
| Length |
121.4 in (308 cm) |
| Width |
64.75 in (164 cm) |
| Height |
58.7 in (149 cm) |
| Ground Clearance |
21 in (53 cm) |
Tire Sizes
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Front: 5.50-16
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Rear: 11-28
Key Features
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Classic Ford Workhorse – Lightweight and powerful enough for mowing, light tillage, and hauling
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Fuel Versatility – Available in gasoline and LP-gas configurations
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Simple & Reliable Transmission – Durable 4-speed gear setup for straightforward field work
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Category I 3-Point Hitch – Standardized for a wide range of compatible implements
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Compact & Agile – Ideal for small farms, gardens, and utility work with limited space
Common Replacement Parts
Shop genuine Ford 640 tractor parts at Broken Tractor:
Engine & Cooling
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Carburetors, fuel filters, radiators, water pumps, head gaskets
Transmission
Hydraulic System
Electrical
Steering & Front End
Maintenance Schedule
| Task |
Recommended Interval |
| Oil & Filter Change |
Every 100 hours or seasonally |
| Air Cleaner Service |
Monthly or more in dusty areas |
| Fuel Filter Cleaning |
Every 200 hours |
| Coolant Flush |
Every 2 years |
| Hydraulic Fluid Change |
Every 300–400 hours |
| Grease Fittings |
Weekly or before heavy use |
