This page provides a detailed comparison of the specifications for the Hart-Parr Old Reliable 30-60 and the John Deere 770.
| Hart-Parr Old Reliable 30-60 | John Deere 770 | |
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| Engine | ||
| Engine Manufacturer | Hart-Parr | Yanmar |
| Engine Model | - | 3TN82-RJX |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Kerosene | Diesel |
| Engine Induction Type | Natural | Natural aspiration |
| Engine Cylinders | 2 | 3 |
| Engine Displacement Value | 2356 ci (38.6 L) | 83 ci (1.4 L) |
| Engine Rated Rpm | 300 | 2600 |
| Engine Power Output Value | - | 23 hp (17.2 kW) |
| Transmission | ||
| Transmission Type | Gear | Unsynchronized gear |
| Transmission Forward Gears | 1 | 8 |
| Transmission Reverse Gears | 1 | 2 |
| Dimensions | ||
| Length Value | 200 | 87.8 |
| Width Value | 106 | 53.5 |
| Operating Weight Value | 20100 lb (9117 kg) | 1929 lb (875 kg) |
| Miscellaneous | ||
| Chassis | 4x2 | 4x2 2WD |
| Drive Type | 2WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | - | Three-Point Hitch |
| Hitch Category | - | I |
| Hitch Position | - | Rear |
| Hitch Capacity Value | - | 816 lb (370 kg) |
| Hydraulic System Type | - | Open center |
| Operator Station Type | - | Open operator station with two-post ROPS |
| Starter Type | - | Electric |
