Specifications, Service and Repair of Farm and Lawn Tractors

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John Deere 790 Specs

VIEW 790 ATTACHMENTS

JD 790 Engine Specifications

Engine Model - Yanmar 3TNV82A
Engine Type - Diesel
Gross Horsepower - 27 (20.1 kW)
PTO Horsepower (Net) - 24 (17.6 kW)
Rated Speed - 2,700 rpm
Operating Range - 1,000–2,810 rpm
No. of Cylinders - 3
Displacement - 81.2 (1.33)
Bore and Stroke - 3.23 x 3.31 in. (82 x 84 mm)
Compression Ratio - 18.1:1
Lubrication - Pressurized
Cooling System - Water pump
Air Cleaner - Dry w/safety element
Engine Shutoff - Key switch
Injection Type - Direct
Pump Type - In-line w/electric shutoff
75% Load (Mowing) - 1.3 gal/hr (4.9 L/hr)
Fuel - No. 1 Diesel, No. 2 Diesel, B5 Biodiesel
Fuel Tank Capacity - 6.3 gal. (23.85 L)
Cooling System Capacity - 4.73 qt. (5.00 L)
Crankcase (w/Filter) Capacity - 4.16 qt. (4.40 L)
Electrical System Type - 12-volt
Battery Size (at -18C) - 500 cca
Alternator - 20-amp

John Deere 790 PTO

PTO Type (2WD) - Transmission-driven w/ overrunning clutch
PTO Type (MFWD) - Continuous live
Mid PTO Speed (Rated Engine rpm) - 2,100 rpm
Rear PTO Speed (Rated Engine rpm) - 540 rpm
PTO Brake - On mid-PTO only

John Deere 790 Transmission

Transmission Type (2WD) - Sliding gear
Transmission Type (MFWD) - Sliding gear
Clutch (2WD) - Single-stage, dry
Clutch (4WD) - Two-stage, dry
Transmission Capacity - 4.00 gal. (15.14 L)
Number of Speeds - 8 forward and 2 reverse
Final Drive - Spur gear

Steering and Brakes

Steering (2WD) - Manual or hydrostatic
Steering (4WD) - Hydrostatic
Brakes Type - Dry shoe

JD 790 Hydraulics and Hitch

Type of Hydraulic System - Open center
Working Pressure - 2,050 psi
Pump (Type) - Dual hydraulic pumps (4WD only)
Implement Pump Capacity - 5.4 gpm (20.5 L/min)
Steering Pump Capacity - 4.2 gpm (15.9 L/min)
Maximum Total Flow - 9.6 gpm (36.4 L/min)
Hydraulic System Capacity - 4.00 gal. (15.14 L)
3-Point Hitch - Category 1, Standard
Hitch Lift Capacity @ 24 in. Behind Link Ends - 815 lb. (370 kg)
Lift-Control Type - Position

Tire Sizes

Front Tires (2WD) - 5.00-15
Front Tires (4WD) - 7.00-14
Front Tires (Turf) - 25x8.50-14
Front Tires (Industrial) - 25x8.50-14
Rear Tires - 11.2-24
Rear Tires (Turf) - 13.6-16
Rear Tires (Industrial) - 15.0-19.6

JD 790 Dimensions

Wheelbase - 60.4 in. (153 cm)
Length - 87.8 in. (223 cm) / 111 in. (281 cm)
Height (hood) - 51.2 in. (130 cm)
Height (ROPS) - 82 in. (208 cm)
Weight 2WD (Field Ready w/R1 Tires) - 1930 lb. (875 kg)
Weight MFWD (Field Ready w/R1 Tires) - 2105 lb. (955 kg)

John Deere 790 Attachments

Backhoe - 7 Backhoe
Loader - 300 Loader
Front Blade - 380A (54-in., 60-in., 66-in.)
Mid-Mount Mower - 60-in.
Side Discharge Grooming Mower - 261 and 272
Rotary Cutters - 4, 5-ft.
Snow Blower - 59-in.
Tillers - 655 and 665

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