This page provides a detailed comparison of the specifications for the Hart-Parr 40 and the John Deere 820 (1956-1958).
| Hart-Parr 40 | John Deere 820 (1956-1958) | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Hart-Parr | John Deere |
| Engine Model | - | John Deere |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Kerosene | Diesel |
| Engine Induction Type | - | Naturally aspirated |
| Engine Cylinders | 4 | 2 |
| Engine Displacement Value | 618 ci (10.1 L) | 471 ci (7.7 L) |
| Engine Rated Rpm | 802 | - |
| Engine Power Output Value | 41 hp (30.3 kW) | 67 hp (50.0 kW) |
| Transmission | ||
| Transmission Type | Gear | Unsynchronized gear with dry disc clutch |
| Transmission Forward Gears | 2 | 6 |
| Transmission Reverse Gears | 1 | 1 |
| Dimensions | ||
| Length Value | 140 | 142.5 |
| Width Value | 96 | 79.1 |
| Operating Weight Value | 6300 lb (2858 kg) | 7848 lb (3560 kg) |
| Miscellaneous | ||
| Chassis | 4x2 | 4x2 2WD |
| Drive Type | 2WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Category | - | Category 3 |
| Hitch Position | - | Rear |
| Hydraulic System Type | - | Powr-Trol |
| Operator Station Type | - | Open operator station |
| Starter Type | - | Gasoline pony motor |
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