The John Deere 770 is a 2WD or 4WD compact utility tractor from the 70 Compact series. This tractor was manufactured by the Yanmar for John Deere from 1989 to 1988. The JD 770 is equipped with a 1.4 L three-cylinder diesel engine and unsynchronized sliding gear type transmission with dry disc clutch (8 forward and 2 reverse gears).
The John Deere 770 compact utility tractor used the Yanmar 3TN82RJX engine. It is a 1.4 L, 1,362 cm2, (83.1 cu·in) three-cylinder natural aspirated diesel engine with 82.0 mm (3.23 in) of the cylinder bore and 86.0 mm (3.39 in) of the piston stroke. The compression ratio rating is 18.1:1. This engine produced 23.4 PS (17.2 kW; 23.0 HP) at 2,600 rpm of maximum output power.
The JD 770 is equipped with manual or hydrostatic power (optional) steering, dry shoe brakes, open operator station with two-post ROPS and 23.8 liters (6.3 US gal.; 5.2 Imp. gal) fuel tank.
Following attachments are available for John Deere 770 compact utility tractor:
- John Deere mid-mount 60 in (1,520 mm) mower deck with 3-blades
- John Deere 70 loader
- John Deere 7 backhoe
John Deere 770 Specifications
| General Specifications | |
| Model | John Deere 770 |
| Length | 2,230 mm (87.8 in) |
| Width | 1,360 mm (53.5 in) |
| Height | 2,000 mm (78.7 in) |
| Wheel base | 1,540 mm (60.6 in) |
| Weight | 2WD: 875 kg (1,929 lbs) 4WD: 954 kg (2,105 lbs) |
| Fuel tank capacity | 23.8 liters (6.3 US gal.; 5.2 Imp. gal) |
| Battery | 12V, CCA 447A |
| Cabin type | Open operator station with two-post ROPS |
| Engine | |
| Engine model | Yanmar 3TN82RJX |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 3 |
| Fuel type | Diesel |
| Displacement | 1.4 L, 1,362 cm2, (83.1 cu·in) |
| Bore and stroke | 82.0 mm X 86.0 mm (3.23 in X 3.39 in) |
| Compression ratio | 18.1:1 |
| Horsepower | 23.4 PS (17.2 kW; 23.0 HP) at 2,600 rpm |
| Starter | Electric |
| Oil capacity: | 4.0 L (4.23 US. qt, 3.52 Imp. qt.) |
| Coolant capacity: | 4.8 L (5.07 US. qt, 4.22 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD or 4×4 MFWD 4WD |
| Steering type | Manual or hydrostatic power (optional) |
| Brakes | Dry shoe |
| Transmission model | – |
| Transmission type | Unsynchronized sliding gear type with dry clutch |
| Gears | 8 forward and 2 reverse |
| Speed | Forward: 17.4 kmh (10.8 mph) Reverse: 5.0 (3.1 mph) |
| Transmission oil capacity | 15.1 L (15.96 US. qt, 13.29 Imp. qt.) |
| Tires | |
| Front tires | Ag: 4.00-15 (2WD), 6.00-12 (4WD) Lawn/turf: 25×8.50-14 |
| Rear tires | Ag: 12.4-16 Lawn/turf: 13.6-16 |
| Three-Point Hitch | |
| Caterogy | I |
| Control type | – |
| Lift capacity | 370 kg (816 lbs) |
| PTO (Power take-off shaft) | |
| Middle PTO type | – |
| Middle PTO spped | 2,100 rpm |
| Rear PTO type | Transmission or live (option) |
| Rear PTO spped | 540 rpm |
| Hydraulic system | |
| Hydraulic type | Open center |
| Hydraulic capacity | 15.1 L (15.96 US. qt, 13.29 Imp. qt.) |
| Pressure | 2050 psi (141.3 bar) |
| Total flow | 5.6 gpm (21.2 lpm) |
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