John Deere 40A Fuel Tank Capacity

Quick answer

The John Deere 40A holds 14 gal (53 L) of fuel. The listed fuel type is diesel; half a tank is 7 gal (26.5 L), and an empty-to-full refill needs about 3 x 5-gal cans.

Fuel tank capacity14 gal (53 L)Empty-to-full tank amount

Half tank7 gal (26.5 L)Planning guide

5-gal cansabout 3 x 5-gal cans to have enough fuel from emptyPortable fuel estimate

Fuel typedieselUse correct fuel

John Deere 40A fuel tank capacity specs

Fuel tank capacity	14 gal (53 L)
Fuel capacity in litres	53 L
Half tank amount	7 gal (26.5 L)
5-gallon fuel cans	about 3 x 5-gal cans to have enough fuel from empty
10-litre fuel jugs	6 x 10-L jugs
Fuel type	diesel
Estimated full tank fuel weight	99 lb (45 kg) of diesel
Engine horsepower	34 hp
Engine displacement	114.2 cu in (1.87 L)
Fuel capacity per horsepower	0.412 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 40A fuel planning notes

Fuel capacity note	The main fuel number for the John Deere 40A is 14 gal (53 L). Use it as the empty-to-full tank amount, not as a guaranteed runtime figure.
Refill planning	If carrying fuel to the John Deere 40A, budget about 3 x 5-gal cans or 6 x 10-L jugs for a full empty-to-full refill.
Fuel type note	The listed fuel type for the John Deere 40A is diesel. Match the fuel type before filling; do not assume every John Deere machine uses diesel.
Full tank weight	A full tank on the John Deere 40A adds 99 lb (45 kg) of diesel. This is an estimate for fuel weight only, not total machine weight.
Engine context	For comparison, the John Deere 40A engine details listed here are engine horsepower 34 hp, engine displacement 114.2 cu in (1.87 L), and tank-to-power ratio 0.412 gal per hp. Tank size alone does not predict fuel use per hour.

Fuel tank capacity guide

This model

14 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 40A fuel capacity FAQ

What is the John Deere 40A fuel tank capacity?

For refueling, the John Deere 40A is listed at 14 gal (53 L). This is tank size, not a guaranteed runtime figure.

What is the litre conversion for the John Deere 40A fuel tank?

The John Deere 40A holds about 53 litres of fuel when filled from empty.

How much fuel is half full on the John Deere 40A?

A half tank on the John Deere 40A works out to roughly 7 gal (26.5 L), based on the listed 14 gal (53 L) full capacity.

How many fuel containers does the John Deere 40A need from empty?

The John Deere 40A fuel capacity works out to about 3 x 5-gal cans or 6 x 10-L jugs. A normal top-up usually takes less.

Does the John Deere 40A use diesel fuel?

For the John Deere 40A, fuel type is listed as diesel. Do not assume diesel or gasoline without checking the machine label and manual.

Does fuel tank capacity tell me the John Deere 40A runtime?

Runtime depends on loader work, PTO use, mowing, pulling load, terrain, throttle and engine condition. The 14 gal (53 L) tank gives the storage amount, not a fixed hour rating.