Fuel tank capacity for the John Deere 820 is 19.5 gal (73.8 L). That equals 9.75 gal (36.9 L) at half tank, with diesel listed as the fuel type.
Fuel tank capacity19.5 gal (73.8 L)Empty-to-full tank amount
Half tank9.75 gal (36.9 L)Planning guide
5-gal cansabout 4 x 5-gal cans to have enough fuel from emptyPortable fuel estimate
Fuel typedieselUse correct fuel
John Deere 820 fuel tank capacity specs
Fuel tank capacity
19.5 gal (73.8 L)
Fuel capacity in litres
73.8 L
Half tank amount
9.75 gal (36.9 L)
5-gallon fuel cans
about 4 x 5-gal cans to have enough fuel from empty
10-litre fuel jugs
8 x 10-L jugs
Fuel type
diesel
Estimated full tank fuel weight
138 lb (63 kg) of diesel
Engine horsepower
32 hp
Engine displacement
151.9 cu in (2.49 L)
Fuel capacity per horsepower
0.609 gal per hp
Fuel capacity is a tank-size figure. Actual top-up amount and runtime depend on remaining fuel, workload, throttle use, terrain and machine condition.
John Deere 820 fuel planning notes
Fuel capacity note
For the John Deere 820, fuel tank capacity is 19.5 gal (73.8 L). This helps with fill-up planning, fuel storage and estimating how much fuel to bring to a job.
Refill planning
For an empty-to-full refill on the John Deere 820, plan for about 4 x 5-gal cans or 8 x 10-L jugs. Real fill amount can be slightly lower if fuel remains in the tank.
Fuel type note
Fuel type matters on the John Deere 820. The listed type is diesel, so use the correct fuel before judging performance or runtime.
Full tank weight
For transport and storage planning, the John Deere 820 full tank fuel load is roughly 138 lb (63 kg) of diesel. Actual weight varies slightly by fuel blend and temperature.
Engine context
The John Deere 820 engine specs listed with this page are engine horsepower 32 hp, engine displacement 151.9 cu in (2.49 L), and tank-to-power ratio 0.609 gal per hp. They help compare models but are not a fuel-consumption rating.
Fuel tank capacity guide
This model
19.5 gal
Guide low
4 gal
Guide typical
12 gal
Guide high
30 gal
Compared with a broad Small / older tractor guide, not the full tractor dataset.
John Deere 820 fuel capacity FAQ
What fuel tank size is listed for the John Deere 820?
The John Deere 820 tank holds 19.5 gal (73.8 L) from empty. Do not confuse full tank capacity with normal top-up amount.
How many litres is the John Deere 820 fuel tank?
The John Deere 820 fuel tank is 19.5 gal (73.8 L), which converts to about 73.8 litres.
What is the half-tank amount for the John Deere 820?
For the John Deere 820, half of the listed fuel capacity is 9.75 gal (36.9 L). The actual gauge reading may not be perfectly linear.
How many fuel cans are needed to fill the John Deere 820?
For an empty-to-full refill on the John Deere 820, plan for about 4 x 5-gal cans or 8 x 10-L jugs. Stop at the correct fill level rather than forcing extra fuel in.
Does the John Deere 820 use gasoline?
The listed fuel type for the John Deere 820 is diesel. Match the correct fuel before filling the tank.
How far can the John Deere 820 go on a tank?
The John Deere 820 tank size is 19.5 gal (73.8 L), but runtime changes with workload. Fuel use is higher with loader work, rotary cutting, baling, tilling, pulling, hill work or heavy PTO use than with light mowing, road travel or low-load utility work.
Is the John Deere 820 fuel tank small or large?
The John Deere 820 has a utility-size tank at 19.5 gal (73.8 L). It is large enough that container count matters if you are refueling away from a pump.
Official information note
Mistakes do happen. Check the operator manual, service manual and official deere.com website for official fuel capacity specifications.
