Technical specification of agricultural tractor John Deere 4050/4250/4350/4450/4650/4850 :
| Model | John Deere 4050 | John Deere 4250 | John Deere 4350 | John Deere 4450 | John Deere 4650 | John Deere 4850 |
| Years of production | 83-88 | 83-88 | 85-88 | 83-88 | 83-88 | 83-88 |
| Engine model / type | 6466T | 6466T | 6466T | 6466T | 6466A | 6466A |
| Number of cylinders / turbocharging | 6T | 6T | 6T | 6T | 6TI | 6TI |
| Engine displacement (cm3) | 7640 | 7640 | 7640 | 7640 | 7640 | 7640 |
| Piston dimension / stroke (mm) | 115,8,5×120,6 | 115,8,5×120,6 | 115,8,5×120,6 | 115,8,5×120,6 | 115,8,5×120,6/td> | 115,8,5×120,6 |
| Maximum engine power (hp) / rpm | 128/2200 | 144/2200 | 140/2200 | 160/2200 | 190/2200 | 215/2200 |
| Torque (Nm) / rpm | 522/1500 | 601/1500 | 600/1400 | 650/1440 | 775/1460 | 875/1540 |
| Number of gears (front + rear) | 15+4 | 15+4 | 15+4 | 15+4 | 15+4 | 15+4 |
| Number of synchronized gears (front+rear) | powershift | powershift | powershift | powershift | powershift | powershift |
| Speed-Shift | powershift | powershift | powershift | powershift | powershift | powershift |
| Type of reverse | – | – | – | – | – | – |
| Driving speed (km/h) | 2,3-31,3 | 2,2-30,3 | 3,3-29,0 | 2,2-29,9 | 2,3-30,9 | 2,3-30,9 |
| Max Driving speed (km/h) | – | – | – | – | – | – |
| Hydraulic pump capacity (L/min) | 105 | 105 | 96 | 105 | 126 | 126 |
| 3-Point Hitch control | mech | mech | mech | mech | mech | mech |
| 3-point hitch max load (kg) | 5560/5830 | 5560/5830 | 5560 | 5560/6126 | 7290/8390 | 7290/8390 |
| PTO speed (rpm) | 540/1000 | 540/1000 | 540/1000 | 540/1000 | 1000 | 1000 |
| Disc brake type (dry / wet) | – | – | – | – | – | – |
| Type of control of the braking system | hydr | hydr | hydr | hydr | hydr | hydr |
| Turning radius 2WD (m) | – | – | – | – | – | – |
| Turning radius 4WD (m) | 9,8 | 9,8 | 9,8 | 9,8 | 10,8 | 10,8 |
| Front wheel 2WD | – | – | – | – | – | – |
| Front wheel 4WD | 16,9R28 | 16,9R28 | 14,9R28 | 16,9-28 | 16,9-30 | 16,9-30 |
| Rear wheel 2WD | – | – | – | – | – | – |
| Rear wheel 4WD | 20,8R38 | 20,8R38 | 18,4R38 | 20,8-38 | 20,8-42 | 20,8-42 |
| 2WD total weight (kg) | – | – | – | – | – | – |
| 4WD total weight (kg) | 6343 | 6473 | 6390 | 6820 | 8224 | 8349 |
| Total height with cabin (cm) | 301 | 301 | 291 | 299 | 307 | 307 |
| Total length (cm) | 487 | 487 | 467 | 487 | 542 | 542 |
| Total width (cm) | 268 | 268 | 268 | 268 | 297 | 297 |
| Fuel tank capacity (l) | 246 | 246 | 174 | 246 | 386 | 386 |
| Cabin sound level (dB) | 76 | 76 | 80 | 76 | 79 | 80 |
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John Deere is a major American manufacturer of agricultural machinery. The first machine produced in 1836 was a plow that made tillage easier. In 1868, the company was incorporated as Deere & Company and in 1958 as John Deere-Delaware Company. John Deere machines are considered reliable, and as a result, are extremely popular.
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