John Deere 850: all source data
All 71 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Distributor | John Deere |
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| Manufacturer | Yanmar |
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| (no label) | Compact Utility tractor |
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| (no label) | Built in Japan |
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| Original price | $7,670 (1983 ) |
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| Original price | $11,000 (1989 ) |
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Engine| (no label) | Yanmar 1.3L 3-cyl diesel |
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Transmission| (no label) | 8-speed gear |
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Power| Engine (gross) | 25 hp | 18.6 kW |
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| Drawbar (claimed) | 19 hp | 14.2 kW |
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| PTO (claimed) | 22 hp | 16.4 kW |
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| Drawbar (tested) | 17.77 hp | 13.3 kW |
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| PTO (tested) | 22.27 hp | 16.6 kW |
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Mechanical| (no label) | Two- or four-wheel drive |
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| Steering | manual |
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| Steering | power |
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| (no label) | Differential mechanical expanding shoe brakes |
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| (no label) | Two-post ROPS. |
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Capacity| Fuel | 8.5 gal | 32.2 L |
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| Hydraulic system | 4.75 gal | 18.0 L |
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| Hydraulic system | 5.25 gal | 19.9 L |
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Hydraulics| Type | open center |
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| Capacity | 4.75 gal | 18.0 L |
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| Capacity | 5.25 gal | 19.9 L |
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| Pressure | 2030 psi | 140.0 bar |
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Hitch| Rear Type | I |
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| Control | position control |
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Pto| Rear PTO | transmission |
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| Rear PTO | live two-stage clutch |
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| Rear PTO Type | 540 (1.375) |
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| Engine RPM | 540@2258 |
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Dimensions| Wheelbase | 64 inches | 162 cm |
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| Weight | 2400 lbs | 1088 kg |
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| Front tire | 5.00-15 |
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| Rear tire | 9.5-24 |
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Serial location| (no label) | Serial number plate on the rear of the John Deere 850, below the PTO shaft. |
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Electrical| Ground | negative |
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| Charging system | alternator |
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| Charging amps | 25 |
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| Battery CCA | 570 |
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| Battery volts | 12 |
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| Battery Group | BCI 30H |
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Engine
Engine detail| (no label) | Yanmar 3T80-J |
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| (no label) | diesel |
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| (no label) | 3-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 78 ci | 1.3 L |
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| Bore/Stroke | 3.15x3.35 inches | 80 x 85 mm |
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| Power (gross) | 25 hp | 18.6 kW |
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| Air cleaner | paper element |
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| Compression | 21.2:1 |
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| Rated RPM | 2600 |
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| Starter volts | 12 |
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| Coolant capacity (Coolant) | 6 qts | 5.7 L |
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Transmission
Transmission| Type | gear |
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| Gears | 8 forward and 2 reverse |
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| Clutch | 210mm dry disc |
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Dimensions
Tires| Ag front | 5.00-15 |
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| Ag rear | 9.5-24 |
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| Ag rear | 11.2-24 |
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| Lawn/turf front | 23/8.5-12 |
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| Lawn/turf rear | 13.6-16 |
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Dimensions| Wheelbase | 64 inches | 162 cm |
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| Length | 117.7 inches | 298 cm |
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| Width | 53.3 inches | 135 cm |
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| Height (hood) | 50.8 inches | 129 cm |
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| Weight | 2400 lbs | 1088 kg |
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| Max Drawbar | 825 lbs | 374 kg |
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| Ground clearance | 13.7 inches | 34 cm |
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| Front tread | 42 to 58 inches | 106 to 147 cm |
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| Rear tread | 42 to 50 inches | 106 to 127 cm |
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