John Deere 420 Fuel Tank Capacity

Quick answer

The John Deere 420 holds 6.5 gal (24.6 L) of fuel. The listed fuel type is diesel; half a tank is 3.25 gal (12.3 L), and an empty-to-full refill needs about 2 x 5-gal cans.

Fuel tank capacity6.5 gal (24.6 L)Empty-to-full tank amount

Half tank3.25 gal (12.3 L)Planning guide

5-gal cansabout 2 x 5-gal cans to have enough fuel from emptyPortable fuel estimate

Fuel typedieselUse correct fuel

John Deere 420 fuel tank capacity specs

Fuel tank capacity	6.5 gal (24.6 L)
Fuel capacity in litres	24.6 L
Half tank amount	3.25 gal (12.3 L)
5-gallon fuel cans	about 2 x 5-gal cans to have enough fuel from empty
10-litre fuel jugs	3 x 10-L jugs
Fuel type	diesel
Estimated full tank fuel weight	46 lb (21 kg) of diesel

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 420 fuel planning notes

Fuel capacity note	For the John Deere 420, fuel tank capacity is 6.5 gal (24.6 L). This helps with fill-up planning, fuel storage and estimating how much fuel to bring to a job.
Refill planning	If carrying fuel to the John Deere 420, budget about 2 x 5-gal cans or 3 x 10-L jugs for a full empty-to-full refill.
Fuel type note	Fuel type matters on the John Deere 420. The listed type is diesel, so use the correct fuel before judging performance or runtime.
Full tank weight	A full tank on the John Deere 420 adds 46 lb (21 kg) of diesel. This is an estimate for fuel weight only, not total machine weight.

Fuel tank capacity guide

This model

6.5 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 420 fuel capacity FAQ

What is the full tank capacity for the John Deere 420?

The John Deere 420 holds 6.5 gal (24.6 L) of fuel. A normal top-up may take less if there is fuel already in the tank.

How many litres is the John Deere 420 fuel tank?

The John Deere 420 holds about 24.6 litres of fuel when filled from empty.

How many litres is half a tank on the John Deere 420?

A half tank on the John Deere 420 works out to roughly 3.25 gal (12.3 L), based on the listed 6.5 gal (24.6 L) full capacity.

How many 10-litre jugs fill the John Deere 420?

The John Deere 420 fuel capacity works out to about 2 x 5-gal cans or 3 x 10-L jugs. A normal top-up usually takes less.

Is the John Deere 420 diesel or gasoline?

For the John Deere 420, fuel type is listed as diesel. Do not assume diesel or gasoline without checking the machine label and manual.

Can I calculate John Deere 420 fuel burn from tank size?

The John Deere 420 tank size is 6.5 gal (24.6 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.