This page provides a detailed comparison of the specifications for the John Deere 770 and the John Deere 790.
| John Deere 770 | John Deere 790 | |
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| Engine | ||
| Engine Manufacturer | Yanmar | Yanmar |
| Engine Model | 3TN82-RJX | 3TNE84 |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Natural aspiration | Natural Aspiration |
| Engine Cylinders | 3 | 3 |
| Engine Displacement Value | 83 ci (1.4 L) | 91 ci (1.5 L) |
| Engine Rated Rpm | 2600 | 2600 |
| Engine Power Output Value | 23 hp (17.2 kW) | 30 hp (22.4 kW) |
| Transmission | ||
| Transmission Type | Unsynchronized gear | Sliding Gear |
| Transmission Forward Gears | 8 | 8 |
| Transmission Reverse Gears | 2 | 2 |
| Dimensions | ||
| Length Value | 87.8 | 87.8 |
| Width Value | 53.5 | 53.5 |
| Operating Weight Value | 1929 lb (875 kg) | 1930 lb (875 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | - |
| Drive Type | 2WD | 4x2 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | Three-Point Hitch | Three-Point Hitch |
| Hitch Category | I | I |
| Hitch Position | Rear | Rear |
| Hitch Capacity Value | 816 lb (370 kg) | 816 lb (370 kg) |
| Hydraulic System Type | Open center | Open Center |
| Operator Station Type | Open operator station with two-post ROPS | Open operator station with ROPS |
| Starter Type | Electric | Electric |
