John Deere 850 Fuel Tank Capacity

Quick answer

Fuel tank capacity for the John Deere 850 is 6.5 gal (24.6 L). That equals 3.25 gal (12.3 L) at half tank, with diesel listed as the fuel type.

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 850 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
Engine model	Yanmar 1.3L 3-cyli
Engine horsepower	25 hp
Engine displacement	1.3 L (79.3 cu in)
Fuel capacity per horsepower	0.26 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 850 fuel planning notes

Fuel capacity note	The main fuel number for the John Deere 850 is 6.5 gal (24.6 L). Use it as the empty-to-full tank amount, not as a guaranteed runtime figure.
Refill planning	For an empty-to-full refill on the John Deere 850, plan for about 2 x 5-gal cans or 3 x 10-L jugs. Real fill amount can be slightly lower if fuel remains in the tank.
Fuel type note	The listed fuel type for the John Deere 850 is diesel. Match the fuel type before filling; do not assume every John Deere machine uses diesel.
Full tank weight	For transport and storage planning, the John Deere 850 full tank fuel load is roughly 46 lb (21 kg) of diesel. Actual weight varies slightly by fuel blend and temperature.
Engine context	The John Deere 850 engine specs listed with this page are engine model Yanmar 1.3L 3-cyli, engine horsepower 25 hp, engine displacement 1.3 L (79.3 cu in), and tank-to-power ratio 0.26 gal per hp. They help compare models but are not a fuel-consumption rating.

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 850 fuel capacity FAQ

What is the John Deere 850 fuel capacity?

The John Deere 850 holds 6.5 gal (24.6 L) of fuel. A normal top-up may take less if there is fuel already in the tank.

What is the litre conversion for the John Deere 850 fuel tank?

The John Deere 850 fuel tank is 6.5 gal (24.6 L), which converts to about 24.6 litres.

What should the John Deere 850 hold at half fuel?

The John Deere 850 half-tank amount is 3.25 gal (12.3 L). If the machine is on a slope, the gauge may read differently.

How much portable fuel should I bring for the John Deere 850?

To fill the John Deere 850 from empty, budget about 2 x 5-gal cans or 3 x 10-L jugs. If it is only low rather than empty, reduce that amount.

What fuel should I put in the John Deere 850?

Use diesel in the John Deere 850 where that listing applies. Wrong fuel can create a much bigger problem than a low tank.

How long will the John Deere 850 run on a full tank?

Runtime depends on loader work, PTO use, mowing, pulling load, terrain, throttle and engine condition. The 6.5 gal (24.6 L) tank gives the storage amount, not a fixed hour rating.