John Deere 790

John Deere 790The John Deere 790 is a 2WD or 4WD compact utility tractor manufactured by the Yanmar for John Deere from 2000 to 2007. The John Deere 790 is equipped with 1.5 L three-cylinder diesel engine and sliding gear transmission with 8 forward and 2 reverse gears.

The John Deere 790 utility tractor is equipped with manual steering for the 2WD version or hydrostatic power steering for 4WD version, independent dry shoe brakes, open operator station with ROPS (rollover protection structure) and 24.0 liters (6.3 US gal.; 5.3 Imp. gal) fuel tank.

The tractor could be equipped with the following engines:

  • From 2000 to 2002 the JD 790 used the Yanmar 3TNE84-JK engine. It is a 1.5 L, 1,496 cm2, (91.3 cu·in) three-cylinder natural aspirated diesel engine with 84.0 mm (3.31 in) of the cylinder bore and 90.0 mm (3.54 in) of the piston stroke. The compression ratio rating is 18.0:1. This engine produced 30.5 PS (22.4 kW; 30 HP) of gross output power and 25.3 PS (18.6 KW; 25.0 HP) of PTO horsepower.
  • After 2003 this compact tractor used the Yanmar 3TNV82A engine. It is a 1.3 L, 1,330 cm2, (81.2 cu·in) three-cylinder natural aspirated diesel engine. The cylinder bore is 82.0 mm (3.23 in) and the piston stroke is 84.0 mm (3.31 in). The compression ratio ratin is 18.0:1. This engine produced 30.5 PS (22.4 kW; 30 HP) of gross output power and 25.3 PS (18.6 KW; 25.0 HP) of PTO horsepower.

Following attachments are available for JD 790 utility tractor:

  • Mid-mount John Deere 60 in (1,520 mm) three-blade mower deck with hydraulic lift
  • John Deere 70 loader
  • John Deere 419 loader
  • John Deere 7 backhoe

John Deere 790 Specifications

General Specifications
ModelJohn Deere 790
Length2,820 mm (111 in)
Width1,360 mm (53.5 in)
Height2,080 mm (81.9 in)
Wheel base1,550 mm (61 in)
Weight Early 2WD: 895 kg (1,973 lbs)
Early 4WD: 976 kg (2,150 lbs)
2WD: 875 kg (1,929 lbs)
4WD: 930 kg (2,050 lbs)
Fuel tank capacity24.0 liters (6.3 US gal.; 5.3 Imp. gal)
Battery12V Group 45 500 CCA
Cabin typeOpen operator station with ROPS
Engine
Engine modelYanmar 3TNE84-JK
Engine typeFour-stroke, liquid-cooled, inline
Cylinders3
Fuel typeDiesel
Displacement1.5 L, 1496 cm2, (91.3 cu·in)
Bore and stroke84.0 mm X 90.0 mm (3.31 in X 3.54 in)
Compression ratio18.0:1
Horsepower30.5 PS (22.4 kW; 30 HP)
StarterElectric
Oil typeAPI: CC
Oil capacity:4.1 L (4.33 US. qt, 3.61 Imp. qt.)
Coolant capacity:4.8 L (5.07 US. qt, 4.22 Imp. qt.)
Engine
Engine modelYanmar 3TNV82A
Engine typeFour-stroke, liquid-cooled, inline
Cylinders3
Fuel typeDiesel
Displacement1.3 L, 1330 cm2, (81.2 cu·in)
Bore and stroke82.0 mm X 84.0 mm (3.23 in X 3.31 in)
Compression ratio18.0:1
Horsepower30.5 PS (22.4 kW; 30 HP)
Starterelectric
Oil typeAPI: CC
Oil capacity:4.1 L (4.33 US. qt, 3.61 Imp. qt.)
Coolant capacity:4.8 L (5.07 US. qt, 4.22 Imp. qt.)
Transmission and chassis
Chassis4×2 2WD or 4×4 MFWD 4WD
Steering typeManual (2WD) and hydrostatic power (4WD)
BrakesIndependent dry shoe
Transmission model–
Transmission typeSliding gear
Gears8 forward and 2 reverse
Speed Forward: 19.0 kmh (11.8 mph) Reverse: 5.5 (3.4 mph)
Transmission oil capacity15.0 L (15.85 US. qt, 13.2 Imp. qt.)
Front axle gearcase (4WD)2.13 L (2.25 US. qt, 1.87 Imp. qt.)
Tires
Front tires Ag: 6.00-12 (early); 5.00-15 (2WD); 7.00-14 (MFWD)
Lawn/turf: 25×8.50-14
Industrial: 25×8.50-14
Rear tires Ag: 12.4-16 (early); 11.2-24
Lawn/turf: 13.6-16
Industrial: 15.0-19.6
Three-Point Hitch
CaterogyI
Control type–
Lift capacity370 kg (816 lbs)
PTO (Power take-off shaft)
Middle PTO type–
Middle PTO spped2,100 rpm
Rear PTO typeTransmission or live (two-stage clutch)
Rear PTO spped540 rpm
Hydraulic system
Hydraulic typeOpen center
Hydraulic capacity15.0 L (15.85 US. qt, 13.2 Imp. qt.)
Pressure2,050 psi (141.3 bar)
Pump flow5.4 gpm (20.4 lpm)
Steering flow4.2 gpm (15.9 lpm)
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. In addition, the characteristics may vary depending on the modification and market. We do not provide advice on technical issues related to the any operation or repair. We do not recommend using provided information for repairing or spare parts ordering, use only official service manuals and spare-parts catalogs.

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