John Deere RX63 vs Kubota F3990
Side-by-side specs comparison
Verdict by the numbers
- The Kubota F3990 is more powerful than the John Deere RX63: 39 HP versus 6 HP (+33 HP, +550%).
- The Kubota F3990 is the more recent model: production started in 2014, versus 1987 for the John Deere RX63.
- The Kubota F3990 is heavier: 778 kg versus 139 kg for the John Deere RX63.
- The Kubota F3990 has the wider mower deck: 60" versus 26".
Full specs comparison
| John Deere RX63 | Kubota F3990 | |
|---|---|---|
| Power | 6 HP | 39 HP |
| Production years | 1987–1990 | 2014–2024 |
| Fuel | Gasoline | Diesel |
| Cylinders | 1 | 4 |
| Weight | 139 kg | 778 kg |
| Drive | 2WD | 4WD |
| Transmission | — | Hydrostatic |
| Gears (fwd/rev) | 7 / 1 | — |
| Wheelbase | 106 cm | 130 cm |
| Length | 154 cm | 251 cm |
| Mower deck | 26" | 60" |
Frequently asked questions
Which is more powerful, the John Deere RX63 or the Kubota F3990?
The Kubota F3990 is more powerful than the John Deere RX63: 39 HP versus 6 HP (+33 HP, +550%).
Which is more recent, the John Deere RX63 or the Kubota F3990?
The Kubota F3990 is the more recent model: production started in 2014, versus 1987 for the John Deere RX63.
Which is heavier, the John Deere RX63 or the Kubota F3990?
The Kubota F3990 is heavier: 778 kg versus 139 kg for the John Deere RX63.
Which has the wider mower deck, the John Deere RX63 or the Kubota F3990?
The Kubota F3990 has the wider mower deck: 60" versus 26".