1978 - 1989 |
50 Compact Series |
Compact Utility tractor |
Yanmar built |
Series: | 750 ← | 850 | → 950 |
870 ↓ |
Production | |
Distributor: | John Deere |
Manufacturer: | Yanmar |
Type: | Compact Utility tractor |
Factory: | Japan |
Original price: | $7,670 (1983 ) |
Original price: | $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 |
power test details ... |
John Deere 850 Engine | |
Yanmar 1.3L 3-cyl diesel | |
Engine details ... |
Mechanical | |
Chassis: | 4x2 2WD |
4x4 MFWD 4WD | |
Steering: | manual |
power*Optional | |
Brakes: | differential mechanical expanding shoe |
Cab: | Two-post ROPS. |
Transmission: | 8-speed gear |
Transmission details ... |
Capacity | |
Fuel: | 8.5 gal 32.2 L |
Hydraulic system: | 4.75 gal 18.0 L |
5.25 gal 19.9 L *After 1984 |
Hydraulics | |
Type: | open center |
Capacity: | 4.75 gal 18.0 L |
5.25 gal 19.9 L *After 1984 | |
Pressure: | 2030 psi 140.0 bar |
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 |
Dimensions & Tires | |
Wheelbase: | 64 inches 162 cm |
Weight: | 2400 lbs 1088 kg |
Front tire: | 5.00-15 |
Rear tire: | 9.5-24 |
Full dimensions and tires ... |
John Deere 850 attachments | |
72" mid-mount mower deck | |
snowblower | |
blade | |
front-end loader | |
backhoe | |
Attachment details ... |
850 Serial Numbers | |
Location: | Serial number plate on the rear of the John Deere 850, below the PTO shaft. |
photo of 850 serial number | |
1978: | 1000 |
1979: | 3859 |
1980: | 7389 |
1981: | 11338 |
1982: | 12481 |
1983: | 14183 |
1984: | 16006 |
1985: | 18001 |
1986: | 22001 |
1987: | 25501 |
1988: | 28337 |
Final: | 30852 |
how to read serial numbers... |
Electrical | |
Ground: | negative |
Battery volts: | 12 |
1978 - 1989 |
50 Compact Series |
Compact Utility tractor |
Yanmar built |
Series: | 850 ← | 950 | → 1050 |
970 ↓ |
Nebraska Tractor Test 1281 | |||
|
Nebraska Tractor Test 1281 | |
Diesel 8-speed 2WD June 12 - 16, 1978 Link: Nebraska Tractor Test 1281 file | |
PTO performance | |
Power at rated engine speed: | 27.36 hp 20.4 kW |
Fuel use: | 1.8 gal/hour 6.8 l/hour |
Power at rated PTO speed: | 28.05 hp 20.9 kW |
Fuel use: | 1.9 gal/hour 7.2 l/hour |
Drawbar performance | |
Max power: | 22.12 hp 16.5 kW |
Fuel use: | 1.8 gal/hour 6.8 l/hour |
Gear 6 used for power test. | |
Max pull: | 3,056 lbs 1386 kg |
Gear 4 used for pull test. |
1978 - 1989 |
50 Compact Series |
Compact Utility tractor |
Yanmar built |
Series: | 850 ← | 950 | → 1050 |
970 ↓ |
Engine Detail | |
Yanmar 3T90-J | |
diesel | |
3-cylinder | |
liquid-cooled | |
Displacement: | 105 ci 1.7 L |
Bore/Stroke: | 3.54x3.54 inches 90 x 90 mm |
Power (gross): | 31 hp 23.1 kW |
Air cleaner: | paper element |
Compression: | 20.4:1 |
Rated RPM: | 2400 |
Starter volts: | 12 |
Coolant capacity: | 6.5 qts 6.2 L |
1978 - 1989 |
50 Compact Series |
Compact Utility tractor |
Yanmar built |
Series: | 850 ← | 950 | → 1050 |
970 ↓ |
Transmission | |
Type: | gear |
Gears: | 8 forward and 2 reverse |
Clutch: | 210mm dry disc |
Four gears, plus reverse, with high and low ranges. |
Speeds | |
With 12.4-28 rear tires. | |
1978 - 1989 |
50 Compact Series |
Compact Utility tractor |
Yanmar built |
Series: | 850 ← | 950 | → 1050 |
970 ↓ |
John Deere 950 Tires | |
Ag front: | 5.00-15 |
Ag rear: | 11.2-24 |
12.4-28 | |
Lawn/turf front: | 27/8.5-15 |
Lawn/turf rear: | 13.6-28 |
Dimensions | |
Wheelbase: | 68.9 inches 175 cm |
Length: | 122 inches 309 cm |
Width: | 53.3 inches 135 cm *Minimum |
Height (hood): | 53.1 inches 134 cm |
Ground clearance: | 15.3 inches 38 cm |
Front tread: | 44.9 to 56.7 inches 114 to 144 cm |
Rear tread: | 45.3 to 59.1 inches 115 to 150 cm |
John Deere 950 Weight | |
4WD Shipping: | 3000 lbs 1360 kg |
2WD Operating: | 2700 lbs 1224 kg |
Ballasted: | 3615 lbs 1639 kg |
1978 - 1989 |
50 Compact Series |
Compact Utility tractor |
Yanmar built |
Series: | 850 ← | 950 | → 1050 |
970 ↓ |
Attachment overview | |
72" mid-mount mower deck | |
Snowblower | |
Blade | |
Front-end loader | |
Backhoe |
72" Mower deck | |
Type: | mid-mount John Deere 72 |
3-blade | |
Cutting width: | 72 inches 182 cm |
Weight: | 525 lbs 238 kg |
Overall width: | 84 inches 213 cm |
Blade | |
Type: | front-mount John Deere 423 |
Width: | 72 inches 182 cm |
Height: | 24 inches 60 cm |
Lift height: | 14.5 inches 36 cm |
Angle: | 27° |
Weight: | 405 lbs 183 kg |
Lift type: | hydraulic |
Angle type: | manual |
hydraulic*Optional |
66" Snow blower | |
Type: | front-mount John Deere 666 |
two-stage | |
Clearing width: | 66 inches 167 cm |
Clearing height: | 28 inches 71 cm |
Weight: | 612 lbs 277 kg |
John Deere 75 Loader | |
Loader weight: | 833 lbs 377 kg |
Height (to pin): | 92 inches 233 cm |
Clearance, dumped bucket: | 75 inches 190 cm |
Dump reach: | 24 inches 60 cm |
Dump angle: | 40° |
Reach at ground: | 55 inches 139 cm |
Breakout force (at pin): | 1710 lbs 775 kg |
Lift to full height (at pin): | 950 lbs 430 kg |
Bucket width: | 53 inches 134 cm |
61 inches 154 cm |
John Deere 80 Loader | |
Height (to pin): | 93.9 inches 238 cm |
Clearance, dumped bucket: | 75.5 inches 191 cm |
Dump reach: | 24 inches 60 cm |
Dump angle: | 39° |
Reach at ground: | 53.2 inches 135 cm |
Rollback at ground: | 22° |
Breakout force (lift): | 1,800 lbs 816 kg |
Breakout force (bucket): | 2,060 lbs 934 kg |
Lift to full height (at pin): | 920 lbs 417 kg |
Bucket width: | 53 inches 134 cm |
Raise time to height: | 4.3 s |
Bucket dump time: | 4.7 s |
Lowering time: | 2.6 s |
Rollback time: | 2.8 s |
John Deere 8A Backhoe | |
Backhoe type: | John Deere 8A Backhoe |
Weight: | 950 lbs 430 kg |
2-Foot flat digging depth: | 102 inches 259 cm |
Reach from pivot: | 133 inches 337 cm |
Loading height: | 82 inches 208 cm |
Bucket force: | 3,200 lbs 1451 kg |
John Deere 1550 Backhoe | |
Backhoe type: | John Deere 1550 Backhoe |
Weight: | 1300 lbs 589 kg |
Transport height: | 68 inches 172 cm |
Digging depth: | 93 inches 236 cm |
Reach from pivot: | 131 inches 332 cm |
Loading height: | 65.5 inches 166 cm |
Bucket Rotation: | 180 |
Swing Arc: | 180 |
Bucket force: | 3107 lbs 1409 kg |
Dipperstick force: | 1470 lbs 666 kg |