The John Deere 620 is a 2WD row-crop tractor from the Two-Cylinder 20 series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1956 to 1958. The John Deere 620 is equipped with a 5.0 L (303.0 cu·in) two-cylinder engine and an unsynchronized gear transmission with mechanical dry disc clutch and 6 forward and 1 reverse gears.
The JD 620 row-crop tractor used the John Deere engine. It is a 5.0 L, 4,965 cm2, (303.0 cu·in) two-cylinder natural aspirated engine with 140.0 mm (5.51 in) of the cylinder bore and 162.0 mm (6.38 in) of the piston stroke. This engine was available for gasoline, LP-gas, or all-fuel.
The John Deere 620 is equipped with power assist steering, differential mechanical contracting band brakes and open operator station.
John Deere 620 Specifications
| General Specifications | |
| Model | John Deere 620 |
| Length | Standard: 3,430 mm (135.0 in) High-crop: 3,730 mm (147.2 in) |
| Width | Standard: 2,200 mm (86.6 in) High-crop: 1,870 mm (74.0 in) |
| Height | Standard: 2,230 mm (87.8 in) High-crop: 2,450 mm (96.7 in) |
| Wheel base | 2,280 mm (89.8 in) |
| Weight | 3,085 kg (6,801 lbs) |
| Fuel tank capacity | All-fuel: 77.6 liters (20.5 US gal.; 17.1 Imp. gal) Gasoline: 84.2 liters (22.2 US gal, 18.5 Imp. gal) LP-gas: 125.0 liters (33.0 US gal, 27.5 Imp. gal) |
| Battery | Two 6V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 2 |
| Fuel type | Gasoline |
| Displacement | 5.0 L, 4,965 cm2, (303.0 cu·in) |
| Bore and stroke | 140.0 mm X 162.0 mm (5.51 in X 6.38 in) |
| Horsepower | – |
| Starter | Electric |
| Oil capacity: | 7.6 L (8 US. qt, 6.7 Imp. qt.) |
| Coolant capacity: | 24.6 L (26 US. qt, 21.6 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Power assist |
| Brakes | Differential mechanical contracting band |
| Transmission model | John Deere |
| Transmission type | Unsynchronized gear with mechanical dry disc clutch |
| Gears | 6 forward and 1 reverse |
| Speed | Forward: 18.5 kmh (11.5 mph) Reverse: 4.8 (3 mph) |
| Transmission oil capacity | 22.7 L (6 US. gal, 5 Imp. gal.) |
| Tires | |
| Front tires | Ag: 6.00-16, 7.50-20 (high-crop) |
| Rear tires | Ag: 12.4-38, 13-30 |
| Three-Point Hitch | |
| Caterogy | II |
| Control type | – |
| Lift capacity (at ends) | – |
| PTO (Power take-off shaft) | |
| Rear PTO type | – |
| Rear PTO speed | 540 rpm |
| Hydraulic system | |
| Hydraulic type | – |
| Pressure | 1200 psi (82.7 bar) |
| Valves | 1 or 2 |
| Pump flow | 8.9 gpm (33.7 lpm) |
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