5 Ways the 850 X-Tier Dozer Outperforms the CAT® D6XE | John Deere
Video by John Deere
Watch on YouTube ↗Skip to content1980's John Deere 850 at Orange Park High School — Jacobuu, CC BY 4.0. Resized; converted to WebP. · Jacobuu · CC BY 4.0 commons.wikimedia.org source ↗ 1980's John Deere 850 at Orange Park High School — Jacobuu, CC BY 4.0. Resized; converted to WebP. · Jacobuu · CC BY 4.0 commons.wikimedia.org source ↗
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Years in Production / 1978–1989
John Deere
850
Explore the specifications, hardware, and original references for the John Deere 850.
25hp
Source index power
MFWD Optional
Drive
1978–1989
Production years
John Deere
Manufacturer
850 / 01
At a glance
Overview
1978 - 1989
50 Compact Series
Compact Utility tractor
Yanmar built
Production
Compact Utility tractor
Built in Japan
- Distributor
- John Deere
- Manufacturer
- Yanmar
- Original Price
- $7,670 (1983 )
- Original Price
- $11,000 (1989 )
Mechanical
Two- or four-wheel drive
Differential mechanical expanding shoe brakes
Two-post ROPS.
- Steering
- manual
- Steering
- power OptOptional
Capacity
- Fuel
- 8.5 gal32.2 L
- Hydraulic System
- 4.75 gal18.0 L
- Hydraulic System
- 5.25 gal*After 198419.9 L
Hydraulics
- Type
- open center
- Capacity
- 4.75 gal18.0 L
- Capacity
- 5.25 gal*After 198419.9 L
- Pressure
- 2030 psi140.0 bar
Hitch
- Rear Type
- I
- Control
- position control
Pto
- Rear Pto
- transmission *Early models, through the 1983 model year.
- Rear Pto
- live two-stage clutch *Introduced in 1984, tractor serial number 16001.
- Rear Type
- 540 (1.375)
- Engine Rpm
- 540@2258
Serial Numbers
FAQ: How to read a serial number table.
- 1978
- 1000
- 1979
- 3859
- 1980
- 7389
- 1981
- 11338
- 1982
- 12481
- 1983
- 14183
- 1984
- 16006
- 1985
- 18001
- 1986
- 22001
- 1987
- 25501
- 1988
- 28337
- Final
- 30852
Electrical
- Ground
- negative
- Charging System
- alternator
- Charging Amps
- 25
- Battery Cca
- 570
- Battery Volts
- 12
- Battery Group
- BCI 30H
850 / 02
Under the hood
Engine Detail
Yanmar 3T80-J
diesel
3-cylinder
liquid-cooled
- Displacement
- 78 ci1.3 L
- Bore Stroke
- 3.15x3.35 inches80 x 85 mm
- Power Gross
- 25 hp18.6 kW
- Air Cleaner
- paper element
- Compression Ratio
- 21.2:1
- Rated Rpm
- 2600
- Starter Volts
- 12
- Coolant Capacity
- 6 qts5.7 L
- Fuel Type
- diesel
- Cylinders
- 3
- Cooling
- liquid-cooled
Engine Options
Yanmar 1.3L 3-cyl diesel
850 / 03
Gears & controls
Transmission
- Transmission Type
- gear
- Gears
- 8 forward and 2 reverse
- Clutch
- 210mm dry disc
- Speeds Description
- With 11.2-24 rear tires.
John Deere850 Transmission
8-speed gear
850 / 04
Size. Stance. Footprint.
Dimensions And Tires
- Wheelbase
- 64 inches162 cm
- Weight
- 2400 lbs1088 kg
- Front Tire
- 5.00-15
- Rear Tire
- 9.5-24
Serial Number Location
Serial number plate on the rear of the John Deere 850, below the PTO shaft.
Tires And Tracks
- Front Ag
- 5.00-15
- Rear Ag
- 9.5-24
- Rear Ag
- 11.2-24
- Lawn Turf Front
- 23/8.5-12
- Lawn Turf Rear
- 13.6-16
850 / 05
Tractor Photos
See it in action
Videos
Watch John Deere 850 videos from their original YouTube creators.
850 / 07
Tests (NTTL)
Nebraska Tractor Test 1280
Diesel 8-speed 2WDJune 12 - 21, 1978
PTO performance
Drawbar performance
Gear 6 used for power test.
Gear 4 used for pull test.
- Id
- 1280
- Power At Rated Engine Speed
- 22.27 hp16.6 kW
- Fuel Use
- 1.6 gal/hour6.1 l/hour
- Fuel Use
- 1.4 gal/hour5.3 l/hour
- Power At Rated Pto Speed
- 20.66 hp15.4 kW
- Max Power
- 17.77 hp13.3 kW
- Max Pull
- 2,699 lbs1224 kg