John Deere 850 Specs ( 1978-1989 )
Production
| Description | Compact Utility tractor / Built in Japan |
|---|---|
| Distributor | John Deere |
| Manufacturer | Yanmar |
| Original price | $7,670 (1983 ) |
Engine
| Engine type | Yanmar 1.3L 3-cyl diesel |
|---|---|
| Air cleaner | paper element |
| Bore/Stroke | 3.15x3.35 inches (80 x 85 mm) |
| Compression | 21.2:1 |
| Coolant capacity | 6 qts (5.7 L) |
| Description | Yanmar 3T80-J / diesel / 3-cylinder / liquid-cooled |
| Displacement | 78 ci (1.3 L) |
| Power (gross) | 25 hp (18.6 kW) |
| Rated RPM | 2600 |
| Starter volts | 12 |
| Drawbar (claimed) | 19 hp (14.2 kW) |
| Drawbar (tested) | 17.77 hp (13.3 kW) |
| Engine (gross) | 25 hp (18.6 kW) |
| PTO (claimed) | 22 hp (16.4 kW) |
| PTO (tested) | 22.27 hp (16.6 kW) |
Transmission
| Clutch | 210mm dry disc |
|---|---|
| Gears | 8 forward and 2 reverse |
| Transmission type | 8-speed gear |
| Type | gear |
Mechanical
| Description | Differential mechanical expanding shoe brakes / Two-post ROPS. |
|---|---|
| Drive type | Two- or four-wheel drive |
| Steering | manual |
Capacity
| Fuel | 8.5 gal (32.2 L) |
|---|---|
| Hydraulic system | 4.75 gal (18.0 L) |
Hydraulics
| Capacity | 4.75 gal (18.0 L) |
|---|---|
| Pressure | 2030 psi (140.0 bar) |
| Type | open center |
Hitch
| Control | position control |
|---|---|
| Rear Type | I |
PTO
| Engine RPM | 540@2258 |
|---|---|
| Rear PTO | transmission *Early models, through the 1983 model year. |
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery CCA | 570 |
|---|---|
| Battery Group | BCI 30H |
| Battery volts | 12 |
| Charging amps | 25 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Front tread | 42 to 58 inches (106 to 147 cm) |
|---|---|
| Ground clearance | 13.7 inches (34 cm) |
| Height (hood) | 50.8 inches (129 cm) |
| Length | 117.7 inches (298 cm) |
| Max Drawbar | 825 lbs (374 kg) |
| Rear tread | 42 to 50 inches (106 to 127 cm) |
| Weight | 2400 lbs (1088 kg) |
| Wheelbase | 64 inches (162 cm) |
| Width | 53.3 inches (135 cm) |
| Front tire | 5.00-15 |
| Rear tire | 9.5-24 |
| Weight | 2400 lbs (1088 kg) |
| Wheelbase | 64 inches (162 cm) |
| Ag front | 5.00-15 |
| Ag rear | 9.5-24 |
| Lawn/turf front | 23/8.5-12 |
| Lawn/turf rear | 13.6-16 |
850 Serial Number Location
| Description | Serial number plate on the rear of the John Deere 850, below the PTO shaft. |
|---|
850 Serial Numbers
| 1978 | 1000 |
|---|---|
| 1979 | 3859 |
| 1980 | 7389 |
| 1981 | 11338 |
| 1982 | 12481 |
| 1983 | 14183 |
| 1984 | 16006 |
| 1985 | 18001 |
| 1986 | 22001 |
| 1987 | 25501 |
| 1988 | 28337 |
| Description | FAQ: How to read a serial number table. |
| Final | 30852 |
John Deere 850 attachments
| Description | 72" mid-mount mower deck / snowblower / blade / front-end loader / backhoe |
|---|
Nebraska Tractor Test 1280
| Description | Diesel 8-speed 2WDJune 12 - 21, 1978Link: Nebraska Tractor Test 1280 file / PTO performance / Drawbar performance / Gear 6 used for power test. / Gear 4 used for pull test. |
|---|---|
| Fuel use | 1.6 gal/hour (6.1 l/hour) / 1.4 gal/hour (5.3 l/hour) / 1.6 gal/hour (6.1 l/hour) |
| Max power | 17.77 hp (13.3 kW) |
| Max pull | 2,699 lbs (1224 kg) |
| Power at rated engine speed | 22.27 hp (16.6 kW) |
| Power at rated PTO speed | 20.66 hp (15.4 kW) |
References
| Description | 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 / Operator's Manual 850, 950 and 1050 Tractors (OMRW19870) published in 1984 / 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 |
|---|
Speeds
| Description | With 11.2-24 rear tires. |
|---|