The Kubota F3990 has a hydrostatic transmission, with Infinite forward and reverse, a top forward speed of 12.5 mph (20.1 km/h), and reverse speed of 6.8 mph (10.9 km/h).
Transmission typeHydrostatic
Gears / rangesInfinite forward and reverse
Forward speed12.5 mph (20.1 km/h)
Kubota F3990 Transmission Specs
Transmission type
Hydrostatic
Gears / ranges / speeds
Infinite forward and reverse
Forward speed
12.5 mph (20.1 km/h)
Reverse speed
6.8 mph (10.9 km/h)
Transmission Comparison Charts
Forward speed comparison
This model
12.5 mph
Average
13 mph
Low
5 mph
High
25 mph
Reverse speed comparison
This model
6.8 mph
Average
6 mph
Low
2.5 mph
High
12 mph
Kubota F3990 Transmission Notes
Transmission type note
The key drivetrain answer for the Kubota F3990 is Hydrostatic. That matters first because transmission type changes how the tractor feels more than a small horsepower difference
Gears and range note
For the Kubota F3990, read Infinite forward and reverse as the range/speed side of the transmission, not automatically as a manual gearbox count
Forward / reverse speed note
Travel speed for the Kubota F3990 is listed as 12.5 mph (20.1 km/h) forward and 6.8 mph (10.9 km/h) reverse. Forward speed matters for transport; reverse speed matters for loader and yard work
Buyer takeaway
If you are comparing tractors, judge the Kubota F3990 from Hydrostatic, Infinite forward and reverse, and 12.5 mph (20.1 km/h), not horsepower alone. Transmission setup decides how the tractor actually drives
What is the main transmission spec for the Kubota F3990?
The main captured transmission detail is Hydrostatic. In plain terms, it is better for easy speed control, mowing, loader work and stop-start property jobs.
How many gears or speeds does the Kubota F3990 have?
The Kubota F3990 gears/ranges line is listed as Infinite forward and reverse. Hydrostatic rows may describe ranges instead of fixed manual gears.
What is the Kubota F3990 forward and reverse speed?
Forward speed is listed as 12.5 mph (20.1 km/h), while reverse speed is listed as 6.8 mph (10.9 km/h).
Is the Kubota F3990 transmission fluid capacity listed?
This row does not show a clean fluid capacity. Check the operator manual before doing a transmission or hydrostatic fluid change.
What should I check before buying a used Kubota F3990?
Confirm the exact transmission type, test forward and reverse operation, check for fluid leaks, and verify any service history for the transmission or transaxle.
Official information note
Mistakes do happen. Tractor transmission specs can change by year, market, serial range, transaxle, trim and option package. Please check the operator manual, service manual, build sheet and official kubotausa.com website for official transmission information before servicing or buying parts.
