JD 850 Engine Technical Data
Engine Model – Yanmar 3T80-J
Engine Type – 3-cyl., liquid-cooled diesel
Number of Cylinders – Three
Displacement, cu in (L) – 78,0 (1,3)
Engine Bore, in (mm) – 3,15 (80,0)
Engine Stroke, in (mm) – 3,35 (85,0)
Rated Engine Power, hp (kW) – 25,0 (18,6)
Rated Engine Speed, rpm – 2600
Compression – 21.2:1
Air Cleaner – Paper element
Fuel Tank Capacity, gal (L) – 8,5 (32,3)
Coolant Capacity, qts (L) – 6,0 (5,7)
Electrical System Rating, Volts – 12
Electrical Ground – Negative
Battery Number – One
John Deere 850 Power Take-Off
Rear PTO Operational Type – Transmission / Live two-stage clutch (Opt)
PTO Horsepower, hp (kW) – 22,0 (16,4)
PTO Speeds, rpm – 540
PTO / Engine Speeds, rpm – 540/2258
John Deere 850 Transmission
Transmission Type – 8F/2R Gears
Number of Forward Speeds – 8
Number of Reverse Speeds – 2
Clutch – Dry disc
Clutch Disc Diameter, in (mm) – 8,3 (210)
Maximum Speed Forward, mph (kph) – 11,7 (18,8)
Service Brake – Differential mechanical expanding shoe
Wheels and Tires
Drive Wheels – 2WD/4WD
Steering Configuration – Front Steer
Steering System – Manual / Power (Opt)
Front Tire Size (Std) – 5.00-15
Rear Tire Size (Std) – 11.2-24
Front Tire Size (Turf) – 23×8.5-12
Rear Tire Size (Turf) – 13.6-16
JD 850 Hydraulics and Hitch
Hydraulic System Type – Open center
Hydraulic Capacity (Std), gal (L) – 4,8 (18,0)
Hydraulic Capacity (Opt), gal (L) – 5,3 (20,0)
3-Point Hitch Category – 1
Drawbar Power, hp (kW) – 17,8 (13,3)
John Deere 850 Dimensions and Weight
Wheelbase, in (mm) – 64 (1620)
Length, in (mm) – 117,7 (2980)
Height, in (mm) – 50,8 (1290)
Overall Width, in (mm) – 53,3 (1350)
Ground Clearance, in (mm) – 13,7 (340)
Front Tread, in (mm) – 42 to 58 (1060 to 1470)
Rear Tread, in (mm) – 42 to 50 (1060 to 1270)
Weight, lb (kg) – 2400 (1088)