John Deere 850

Production ended · 2WD or 4WD

PTO power · claimed

22 hp

Weight
2,400 lb
Engines
1 Diesel
Built
no record
Price new
no record

Power

Power specifications
Engine25 hp gross
PTO22 hp claimed
PTO, tested22.3 hp
Drawbar19 hp claimed
Drawbar, tested17.8 hp
Listed power25 hp engine basis

Engines

Engines fitted to the John Deere 850
Yanmar 1.3L 3-cyl dieselDiesel · 3 cyl78 ci
Engine details
Yanmar 1.3L 3-cyl diesel
Bore × stroke
3.15 in × 3.35 in
Rated speed
2,600 rpm
Rated power
25 hp
Compression
21.2:1
Cooling
liquid-cooled

Transmissions

Transmissions for the John Deere 850
8-speed geargear8F / 2R

Weight

Weight specifications
Weight2,400 lb unspecified

Dimensions

Dimensions specifications
Wheelbase64 in
Length117.7 in
Width53.3 in
Ground clearance13.7 in
Front tread, narrowest42 in
Front tread, widest58 in
Rear tread, narrowest42 in
Rear tread, widest50 in

Capacities

Capacities specifications
Fuel tank8.5 gal
Hydraulic system4.7 gal

Hydraulics

Hydraulics specifications
Systemopen center
Pump flowno record
Pressure2,030 psi

Hitch

Hitch specifications
Rear hitch categoryI
Controlposition control
Rear lift capacityno record

PTO

PTO specifications
Rear PTOtransmission
Rear PTO speeds540 (1.375)
Engine rpm at PTO speed540@2258

Chassis

Chassis specifications
Drive2WD/4WD
Steeringmanual
BrakesDifferential mechanical expanding shoe brakes
CabTwo-post ROPS

Tires

Tires specifications
Front5.00-15
Rear9.5-24

Electrical

Electrical specifications
System voltage12 V
Cold cranking570 CCA
Chargingalternator
Charging output25 A
Groundnegative

Production

Production specifications
FactoriesJapan
Built byYanmar

Serial numbers

Serial number plate on the rear of the John Deere 850, below the PTO shaft.

First serial number by year
YearFirst serial
19781000
19793859
19807389
198111338
198212481
198314183
198416006
198518001
198622001
198725501
198828337
Final30852

Literature

  • Introducing the John Deere lawn and garden line for 1979
  • Consumer Products Price List John Deere, 1983
  • Grounds Care Equipment Purchasing Guide John Deere, 1983
  • Compact Utility/Utility Tractors Product Information Handbook John Deere, 1983
  • Operator's Manual 850, 950 and 1050 Tractors (OMRW19870) 1984
  • John Deere 850 and 950 tractors 1978
  • Operator's Manual 850 and 950 Tractors (OMR68993) 1978
  • John Deere tractors 22 to 50 HP 1980
  • Compact Utility Diesel Tractors 14.5 to 40 PTO hp John Deere, 1982
  • Diesel Tractors 14.5 to 60 PTO hp John Deere, 1984

Attachments

  • 72" mid-mount mower deck
  • snowblower
  • blade
  • front-end loader
  • backhoe