Farmall BN
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| Production | |
| Manufacturer | Farmall (a part of International Harvester) |
| Row-Crop tractor | |
| Factories | Chicago, Illinois, USA |
| Louisville, Kentucky, USA | |
| Total built | 14,967 |
| The Farmall BN used a different rear end and axle that was eight inches narrower than the Farmall B. | |
| Farmall BN Engine | |
| International Harvester 1.9L 4-cyl gasoline | |
| Fuel tank | 10 gal 37.9 L |
| Aux. fuel | 1 gal 3.8 L |
 Engine details ... | |
| Farmall BN Transmission | |
| 4-speed gear | |
 Transmission details ... |
| Farmall BN Power | |
| Drawbar (claimed) | 17 hp 12.7 kW |
| Belt (claimed) | 19 hp 14.2 kW |
| Plows | 1 *16-inch |
| Mechanical | |
| Two-wheel drive | |
| Manual steering | |
| Mechanical contracting band brakes | |
| Open operator station |
| Photos | |
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 Farmall BN photos... | |
| Tractor hitch | |
| Type | IH Pneumatic Lift-All |
| Power Take-off (PTO) | |
| Rear PTO | transmission |
| Rear PTO Type | 540 (1.125) |
| Dimensions & Tires | |
| Wheelbase | 72.75 inches 184 cm |
| Weight | 1800 lbs 816 kg |
| Front tire | 6.00-12 |
| Rear tire | 8-24 |
 Full dimensions and tires ... | |
| BN Serial Number Location | |
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| Right side of seat support frame |
| BN Serial Numbers | |
| 1940 | FABN39715 |
FAQ: How to read a serial number table. | |
| Belt Pulley | |
| Diameter | 8.5 inches 21 cm |
| Width | 6 inches 15 cm |
| RPM | 1157 |
| Speed | 2574 ft/min 784.56 meters/min |
| Electrical | |
| Ground | positive |
| Charging system | generator |
| Battery volts | 6 |
| References | |
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| The Farmall System of Farming published in 1946, by International Harvester |
| Page information | |
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| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on April 24, 2025 |