Diesel 8-speed 2WD June 12 - 21, 1978 Link: Nebraska Tractor Test 1280 file PTO performance Drawbar performance Gear 6 used for power test Gear 4 used for pull test
Power at rated engine speed
22.27hp / 16.6kW
Fuel use
1.6gal/hour / 6.1l/hour
Power at rated PTO speed
20.66hp / 15.4kW
Max power
17.77hp / 13.3kW
Max pull
2,699lbs / 1224kg
JOHN DEERE 850 POWER
Engine (gross)
25hp / 18.6kW
Drawbar (claimed)
19hp / 14.2kW
PTO (claimed)
22hp / 16.4kW
Drawbar (tested)
17.77hp / 13.3kW
PTO (tested)
22.27hp / 16.6kW
ENGINE DETAIL
Description
Yanmar 3T80-J diesel 3-cylinder liquid-cooled
Displacement
78ci / 1.3L
Bore/Stroke
3.15x3.35inches / 80x 85 mm
Power (gross)
25hp / 18.6kW
Air cleaner
paper element
Compression
21.2:1
Rated RPM
2600
Starter volts
12
Coolant capacity
6 qts /5.7 L
JOHN DEERE 850 ENGINE
Description
Yanmar 1.3L 3-cyl diesel
TRANSMISSION
Type
gear
Gears
8 forward and 2 reverse
Clutch
210mm dry disc
SPEEDS
Description
With 11.2-24 rear tires
MECHANICAL
Chassis
4x2 2WD/4x4 MFWD 4WD
Steering
manual/power
Brakes
differential mechanical expanding shoe
Cab
Two-post ROPS
Transmission
8-speed gear
CAPACITY
Fuel
8.5gal / 32.2L
Hydraulic system
4.75gal / 18.0L/5.25gal / 19.9L *After 1984
HYDRAULICS
Type
open center
Capacity
4.75gal / 18.0L/5.25gal / 19.9L *After 1984
Pressure
2030psi / 140.0bar
TRACTOR HITCH
Rear Type
I
POWER TAKE-OFF (PTO)
Rear PTO
transmission*Early models, through the 1983 model year./live two-stage clutch*Introduced in 1984, tractor serial number 16001.
Rear RPM
540 (1.375)
Engine RPM
540@2258
JOHN DEERE 850 TIRES
Ag front
5.00-15
Ag rear
9.5-24/11.2-24
Lawn/turf front
23/8.5-12
Lawn/turf rear
13.6-16
DIMENSIONS
Wheelbase
64inches / 162cm
Length
117.7inches / 298cm
Width
53.3inches / 135cm
Height (hood)
50.8inches / 129cm
Weight
2400lbs / 1088kg
Ground clearance
13.7inches / 34cm
Front tread
42 to 58inches / 106to 147 cm
Rear tread
42 to 50inches / 106to 127 cm
DIMENSIONS & TIRES
Wheelbase
64inches / 162cm
Weight
2400lbs / 1088kg
Front tire
5.00-15
Rear tire
9.5-24
ATTACHMENT OVERVIEW
Description
72
72
Type
mid-mount John Deere 72/3-blade
Cutting width
72inches / 182cm
Weight
525lbs / 238kg
Overall width
84inches / 213cm
BLADE
Type
front-mount John Deere 423
Width
72inches / 182cm
Height
24inches / 60cm
Lift height
14.5inches / 36cm
Angle
27°
Weight
405lbs / 183kg
Lift type
hydraulic
Angle type
manual/hydraulic
66
Type
front-mount John Deere 666/two-stage
Clearing width
66inches / 167cm
Clearing height
28inches / 71cm
Weight
612lbs / 277kg
JOHN DEERE 75 LOADER
Loader weight
833lbs / 377kg
Height (to pin)
92inches / 233cm
Clearance, dumped bucket
75inches / 190cm
Dump reach
24inches / 60cm
Dump angle
40°
Reach at ground
55inches / 139cm
Breakout force (at pin)
1710lbs / 775kg
Lift to full height (at pin)
950lbs / 430kg
Bucket width
53inches / 134cm/61inches / 154cm
JOHN DEERE 8A BACKHOE
Backhoe type
John Deere 8A Backhoe
JOHN DEERE 1550 BACKHOE
Backhoe type
John Deere 1550 Backhoe
Weight
1300lbs / 589kg
Transport height
68inches / 172cm
Digging depth
93inches / 236cm
Reach from pivot
131inches / 332cm
Loading height
65.5inches / 166cm
Bucket Rotation
180
Swing Arc
180
Bucket force
3107lbs / 1409kg
Dipperstick force
1470lbs / 666kg
850 SERIAL NUMBERS
Location
Serial number plate on the rear of the John Deere 850, below the PTO shaft.
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
Battery volts
12
About John Deere Tractor
The 850 tractor is part of the John Deere's 50 Compact Series. The 850 is a Compact Utility Tractors type, which is used mostly in Agriculture Tractors. A engine powers the 850 tractor. This setting is more practical in the real world.