John Deere X520 vs Kubota F3990

Side-by-side specs comparison

John Deere X520

John Deere X520

26 HP · 2006–2008

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Kubota F3990

Kubota F3990

39 HP · 2014–2024

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Verdict by the numbers

  • The Kubota F3990 is more powerful than the John Deere X520: 39 HP versus 26 HP (+13 HP, +50%).
  • The Kubota F3990 is the more recent model: production started in 2014, versus 2006 for the John Deere X520.
  • The Kubota F3990 is heavier: 778 kg versus 322 kg for the John Deere X520.
  • The Kubota F3990 has the wider mower deck: 60" versus 54".

Full specs comparison

John Deere X520Kubota F3990
Power26 HP39 HP
Production years2006–20082014–2024
FuelDiesel
Cylinders24
Weight322 kg778 kg
Drive2WD4WD
TransmissionHydrostaticHydrostatic
Wheelbase130 cm130 cm
Length200 cm251 cm
Mower deck54"60"

Frequently asked questions

Which is more powerful, the John Deere X520 or the Kubota F3990?

The Kubota F3990 is more powerful than the John Deere X520: 39 HP versus 26 HP (+13 HP, +50%).

Which is more recent, the John Deere X520 or the Kubota F3990?

The Kubota F3990 is the more recent model: production started in 2014, versus 2006 for the John Deere X520.

Which is heavier, the John Deere X520 or the Kubota F3990?

The Kubota F3990 is heavier: 778 kg versus 322 kg for the John Deere X520.

Which has the wider mower deck, the John Deere X520 or the Kubota F3990?

The Kubota F3990 has the wider mower deck: 60" versus 54".

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