Kubota F3990 vs Roper lawn tractors K521
Side-by-side specs comparison
Verdict by the numbers
- The Kubota F3990 is more powerful than the Roper lawn tractors K521: 39 HP versus 5 HP (+34 HP, +680%).
- The Kubota F3990 is the more recent model: production started in 2014, versus 1973 for the Roper lawn tractors K521.
- The Kubota F3990 is heavier: 778 kg versus 133 kg for the Roper lawn tractors K521.
- The Kubota F3990 has the wider mower deck: 60" versus 26".
Full specs comparison
| Kubota F3990 | Roper lawn tractors K521 | |
|---|---|---|
| Power | 39 HP | 5 HP |
| Production years | 2014–2024 | 1973–1976 |
| Fuel | Diesel | Gasoline |
| Cylinders | 4 | 1 |
| Weight | 778 kg | 133 kg |
| Drive | 4WD | 2WD |
| Transmission | Hydrostatic | — |
| Gears (fwd/rev) | — | 3 / 1 |
| Wheelbase | 130 cm | 102 cm |
| Length | 251 cm | 146 cm |
| Mower deck | 60" | 26" |