The Kubota KB21X tractor fuel tank capacity found is 6.3 gal (23.8 L). Fuel type is diesel.
Fuel tank6.3 gal (23.8 L)
Fuel typediesel
5-gal cansabout 2 x 5-gal cans
Full fuel weightabout 45 lb (20 kg) of diesel
Kubota KB21X Fuel Tank Specs
Fuel tank capacity
6.3 gal (23.8 L)
Fuel type
diesel
Engine
1.1L 3-cylinder
Engine horsepower
20.7 hp
Fuel capacity per horsepower
0.3 gal per hp
Fuel tank size class
medium compact-tractor fuel tank
5-gallon fuel cans
about 2 x 5-gal cans
10-litre fuel jugs
about 3 x 10-L jugs
Estimated full tank fuel weight
about 45 lb (20 kg) of diesel
Fuel Tank Benchmarks
Fuel tank capacity benchmark
This model
6.3 gal
Average
9 gal
Low
4.5 gal
High
16 gal
Engine horsepower benchmark
This model
20.7 hp
Average
32 hp
Low
16 hp
High
60 hp
Fuel per horsepower benchmark
This model
0.3 gal/hp
Average
0.28 gal/hp
Low
0.15 gal/hp
High
0.55 gal/hp
Benchmarks are general reference ranges for compact tractors.
Kubota KB21X Fuel Tank FAQ
Fuel tank capacity
The Kubota KB21X tractor holds 6.3 gallons, which is about 23.8 litres. Use that as the refill figure when planning diesel storage, fuel cans or workshop servicing.
Fuel type
The fuel type found for the Kubota KB21X tractor is diesel. Match the fuel type to the operator manual and the engine fitted to your exact model.
Fuel tank size class
The Kubota KB21X is listed as having a medium compact-tractor fuel tank based on the fuel tank capacity found.
Fuel cans needed from empty
From empty, the Kubota KB21X needs about 2 x 5-gal cans or about 3 x 10-L jugs to cover a full refill.
Estimated full tank fuel weight
A full tank on the Kubota KB21X adds about 45 lb (20 kg) of diesel before allowing for the tank itself.
Engine specs found
Engine specs found for the Kubota KB21X include 1.1L 3-cylinder, 20.7 hp.
Fuel capacity per horsepower
The fuel capacity per horsepower for the Kubota KB21X is 0.3 gal per hp based on the fuel tank and engine horsepower figures found.
Fuel refill planning note
Plan around roughly 6.3 gal of fuel for a full refill. This gives more working time than a small tank, but refuelling still matters for longer mowing or property jobs. Tank class: medium fuel tank. Fuel type: diesel.
Official information note
Mistakes do happen. Check the operator manual, service manual and official kubotausa.com website for official fuel capacity specifications before refuelling, servicing or buying parts.
