John Deere 850
| | 1978 - 1989 |
| 50 Compact Series | | Compact Utility tractor | | Yanmar built |
|
Series map:
750
850
950
20.0hp
25.0hp
31.0hp
| Production |
| Distributor | John Deere
|
| Manufacturer | Yanmar
|
| Compact Utility tractor |
| Built in Japan |
| Original price | $7,670 (1983 )
|
| $11,000 (1989 )
|
| John Deere 850 Power |
| Engine (gross) | 25 hp
18.6 kW
|
| Drawbar (claimed) | 19 hp
14.2 kW
|
| PTO (claimed) | 22 hp
16.4 kW
|
| Drawbar (tested) | 17.77 hp
13.3 kW
|
| PTO (tested) | 22.27 hp
16.6 kW
|
 Performance test details ... |
| Mechanical |
| Two- or four-wheel drive |
| Steering | manual
|
| | power OptOptional
|
| Differential mechanical expanding shoe brakes |
| Two-post ROPS. |
| Capacity |
| Fuel | 8.5 gal
32.2 L
|
| Hydraulic system | 4.75 gal
18.0 L
|
| | 5.25 gal*After 1984
19.9 L
|
| Hydraulics |
| Type | open center
|
| Capacity | 4.75 gal
18.0 L
|
| | 5.25 gal*After 1984
19.9 L
|
| Pressure | 2030 psi
140.0 bar
|
| Tractor hitch |
| Rear Type | I
|
| Control | position control
|
| 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 PTO Type | 540 (1.375)
|
| Engine RPM | 540@2258
|
| 850 Serial Number Location |
 |
| Serial number plate on the rear of the John Deere 850, below the PTO shaft. |
| Electrical |
| Ground | negative
|
| Charging system | alternator
|
| Charging amps | 25
|
| Battery CCA | 570
|
| Battery volts | 12
|
| Battery Group | BCI 30H
|
| References |
 |
| Introducing the John Deere lawn and garden line for 1979 |
| Consumer Products Price List published in 1983, by John Deere |
| Grounds Care Equipment Purchasing Guide published in 1983, by John Deere |
| Compact Utility/Utility Tractors Product Information Handbook published in 1983, by John Deere |
| John Deere 850 and 950 tractors published in 1978 |
| Operator's Manual 850 and 950 Tractors (OMR68993) published in 1978 |
| John Deere tractors 22 to 50 HP published in 1980 |
| Compact Utility Diesel Tractors 14.5 to 40 PTO hp published in 1982, by John Deere |
| Diesel Tractors 14.5 to 60 PTO hp published in 1984, by John Deere |
| Page information |
 |
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| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. |
| Peter Easterlund - owner/author |
| Email: Peter@TractorData.com |
| Updated on December 11, 2023 |
http://techpubs.deere.com/ - Official operator manuals for purchase or download from Deere.
|
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is accurate. However, differences between sources, incomplete listings,
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Consult official
literature from the manufacturer before attempting any service or repair.
Engine details ...
Transmission details ...
John Deere 850 photos...
Full dimensions and tires ...
Attachment details ...