This page provides a detailed comparison of the specifications for the Hart-Parr Old Reliable 30-60 and the Kubota B2231.
| Hart-Parr Old Reliable 30-60 | Kubota B2231 | |
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| Engine | ||
| Engine Manufacturer | Hart-Parr | Kubota |
| Engine Model | - | D1105 |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Kerosene | Diesel |
| Engine Induction Type | Natural | Naturally Aspirated |
| Engine Cylinders | 2 | 3 |
| Engine Displacement Value | 2356 ci (38.6 L) | 68 ci (1.1 L) |
| Engine Rated Rpm | 300 | 2500 |
| Engine Power Output Value | - | 23 hp (16.9 kW) |
| Transmission | ||
| Transmission Type | Gear | Hydrostatic |
| Transmission Forward Gears | 1 | Infinite (3-range) |
| Transmission Reverse Gears | 1 | Infinite (3-range) |
| Dimensions | ||
| Length Value | 200 | - |
| Width Value | 106 | 48.6 |
| Operating Weight Value | 20100 lb (9117 kg) | - |
| Miscellaneous | ||
| Chassis | 4x2 | 4x4 MFWD 4WD |
| Drive Type | 2WD | MFWD 4WD |
| Hitch Type | - | Category I |
| Hitch Capacity Value | - | 2139 lb (970 kg) |
| Hydraulic System Type | - | Open center |
| Operator Station Type | - | ROPS or Cab (optional) |
| Starter Type | - | Electric |
