Dimensions
| Length w/ 3-Point Hitch | 111.2 in (2823.5 mm) | 
| Length w/o 3-Point Hitch | 87.8 in (2230.5 mm) | 
| Width w/ Turf Tires | 53.8 in (1367 mm) | 
| Wheelbase | 61 in (1550 mm) | 
| Height (ROPS) | 79 in (2006 mm) | 
| Height (Hood) | 48.1 in (1227.7 mm) | 
| Ground Clearance (Rear Axle) | 12 in (305 mm) | 
| Ground Clearance (Front Axle, 2WD) | 13.4 in (340 mm) | 
| Ground Clearance (Front Axle, 4WD) | 10.4 in (264 mm) | 
| Front Wheel Tread | 38.2 in (970 mm) | 
| Rear Wheel Tread | 52.5 in (1334 mm) | 

Tires
| Front Tire Size (Standard) | 6.00-12 R1 | 
| Front Tire Size (Ag, 2WD) | 5.00-15 | 
| Front Tire Size (Ag, 4WD) | 7.00-14 | 
| Front Tire Size (Lawn/turf) | 25×8.50-14 | 
| Front Tire Size (Industrial) | 25×8.50-14 | 
| Rear Tire Size (Standard) | 12.40-16 R1 | 
| Rear Tire Size (Ag) | 11.2-24 | 
| Rear Tire Size (Lawn/turf) | 13.6-16 | 
| Rear Tire Size (Industrial) | 15.0-19.6 | 

Operational Specs
| Operating Weight (2WD) | 1930 lb (875 kg) | 
| Operating Weight (4WD) | 2105 lb (954 kg) | 
| Operating Voltage | 12 V | 
| Alternator | 20 amps | 
| Battery | 12 V, CCA 500, Group 45 | 
| Starter | 1.9 hp (1.42 kw) | 
| ROPS Type | Two-post ROPS | 
Engine Details
| Model Year | 2000-2002 | 2003-2007 | 
| Number Of Cylinders | 3 | 3 | 
| Engine Make | Yanmar | Yanmar | 
| Engine Model | Yanmar 3TNE84 | Yanmar 3TNE82A | 
| Displacement | 91.3 cu in (1.49 L) | 81.1 cu in (1.33 L) | 
| Bore | 3.31 in (84 mm) | 3.23 in (82 mm) | 
| Stroke | 3.54 in (90 mm) | 3.31 in (84 mm) | 
| Horsepower (Gross) | 30 hp (22.4 kw) | 27 hp (20.1 kw) | 
| PTO Power | 25 hp (18.6 kw) | 24 hp (17.9 kw) | 
| Power Measured @ | 2600 rpm | 2600 rpm | 
| Peak Torque | 54.1 lb ft (73.4 Nm) | 50.8 lb ft (68.9 Nm) | 
| Torque Measured @ | 2600 rpm | 2600 rpm | 
| Injection Pump Type | Direct Injection – Self Bleeding | Direct Injection | 
| Cooling System | Radiator Cooling | Radiator | 
| Lubrication | Pressurized | Forced Iubrication by trochoid pump | 
| Oil Filter | Single Element | Standard Single Element | 
| Air Cleaner | Dry Element | Dry type with safety element | 
| Compression Ratio | 18:1 | 18.5:1 | 
| Fuel Consumption @ 75% Load | 1.3 gal/hr (4.9 L/hr) | 1.08 gal/hr (4.1 L/hr) | 
| Aspiration | Naturally aspirated | Naturally aspirated | 
Yanmar 3TNE82A-EJKD diesel engine for John Deere 790 Compact Utility Tractor with serial numbers >592446; Yanmar 3TNE82A-EJKS engine for S/N <790000.

Transmission
| Type | Unsynchronized transmission, sliding gear, 2 range | 
| Number of Gears | 8 forward and 2 reverse | 
| Main Clutch Disk Type (2WD) | Single Stage Dry | 
| Main Clutch Disk Type (4WD) | Dual Stage Dry | 
| Max Travel Speed, Forward (2000-2002 / 2003-2007) | 10.8 mph (17.3 km/h) / 11.8 mph (19.1 km/h) | 
| Max Travel Speed, Reverse (2000-2002 / 2003-2007) | 3.1 mph (4.9 km/h) / 3.4 mph (5.4 km/h) | 
| Drive | 2WD or 4WD | 
| Steering (2WD) | Manual | 
| Steering (4WD) | Hydrostatic power | 
| Service Brakes | Independent dry shoe brakes | 
| Differential Lock | Mechanical | 
| Final Drive Type | Spur Gear | 

PTO (Power Take-Off)
| PTO Type (Standard) | Transmission Drive (Single Stage Clutch, Dry) | 
| PTO Type (Optional) | Continuous Live (Dual Stage Clutch, Dry) | 
| Rear PTO Speed | 540 rpm | 
| Mid PTO Speed | 2100 rpm | 
| PTO Power (2000-2002 / 2003-2007) | 25 hp (18.6 kw) / 24 hp (17.9 kw) | 
| PTO Brake | Wet Disk Brake (Mid PTO only) | 
Hydraulic System
| Type | Open Center | 
| Pump Type (Manual Steering Models) | Single Gear | 
| Pump Type (Power Steering Models) | Dual Gear | 
| Max Operating Pressure | 2050 psi (14135 kPa) | 
| Implement Pump Flow | 5.4 gal/min (20.5 L/min) | 
| Steering Pump Flow | 4.2 gal/min (15.9 L/min) | 
| Total Pump Flow | 9.6 gal/min (36.4 L/min) | 
| Draft Control Sensing | Position control | 
| 3-Point Hitch Category | Category I | 
| 3-Point Hitch Lift Capacity @ 24″ | 815 lb (370 kg) | 
John Deere 790 Attachments
Here’s a detailed overview of attachments compatible with the John Deere 790 Compact Utility Tractor, including specs and key features for each

Front Loaders
| Model | 70 Loader | 419 Loader | 
| Height (to pin) | 77 in (1950 mm) | 88 in (2230 mm) | 
| Clearance (dumped bucket) | 62.5 in (1580 mm) | 66.3 in (1680 mm) | 
| Dump Reach (at maximum height) | 31 in (780 mm) | 39.7 in (1000 mm) | 
| Reach (at ground level) | 46 in (1160 mm) | 51.5 in (1300 mm) | 
| Dump angle | 45° | 45° | 
| Rollback angle | 22° | 23.4° | 
| Boom Breakout force (at pin) | 1300 lbf (589 kgf) | 1616 lbf (733 kgf) | 
| Boom Breakout force (at 500 mm) |  | 1378 lbf (625 kgf) | 
| Bucket Breakout force | 1570 lbf (712 kgf) | 1124 lbf (509 kgf) | 
| Lift to full height (at pin) | 755 lb (342 kg) | 610 lb (276 kg) | 
| Lift to full height (at 500 mm) |  | 527 lb (239 kg) | 
| Lift to 1.5m (at pin) |  | 829 lb (376 kg) | 
| Lift to 1.5m (at 500 mm) |  | 730 lb (331 kg) | 
| Bucket Width / Capacity | 48 in (1210 mm) / 0.17 yd3 (0.1 m3) | 53 in (1350 mm) / 0.29 yd3 (0.22 m3) 61 in (1550 mm) / 0.33 yd3 (0.25 m3)
 73 in (1850 mm) / 0.56 yd3 (0.43 m3)
 Heavy Duty 61 in (1550 mm) / 0.47 yd3 (0.36 m3)
 | 
Backhoe
| Model | John Deere 7 | 
| Digging Depth (2-Foot flat) | 90 in (2280 mm) | 
| Bucket Digging Force (SAE) | 1945 lbf (8.65 kN) | 
| Dipperstick Digging Force (SAE) | 1095 lbf (4.87 kN) | 
| Reach from Swing Pivot | 114 in (2890 mm) | 
| Loading Height | 70 in (1770 mm) | 
| Weight | 787 lb (356 kg) | 

Mower, 60″
| Model | John Deere 60″ Mower | 
| Type | Mid-mount John Deere 3-blade with hydraulic lift | 
| Overall Width | 72.5 in (1840 mm) | 
| Cutting Width | 60 in (1520 mm) | 
| Cut Height | 1 to 8.75 in (20 to 220 mm) | 
| Weight | 325 lb (147 kg) | 
Blade, 66″
| Model | John Deere 380A | 
| Type | Front-mount, hydraulic lift, hydraulic angle | 
| Width | 66 in (1670 mm) | 
| Height | 25.75 in (650 mm) | 
| Lift | 13 in (330 mm) | 
| Angling | 30° | 
| Cut | 5.5 in (130 mm) | 
| Weight | 474 lb (215 kg) | 
Service Refill Capacities
| Fuel Tank Capacity | 6.3 gal (24 L) | 
| Engine Oil Capacity | 1.08 gal (4.1 L) | 
| Cooling System Capacity | 1.25 gal (4.8 L) | 
| Transmission / Hydraulic Oil Capacity (HST) | 4 gal (15 L) | 
| Front Axle Fluid Capacity | 0.58 gal (2.18 L) | 
John Deere 790 Filters
| Primary Air Filter (3TNE84) | UC11955 | 
| Primary Air Filter (-LJNTD,-LJNTS,-EJKD,-EJKS) | M131802 | 
| Secondary Air Filter (3TNE84) | CH12881 | 
| Secondary Air Filter (-LJNTD,-LJNTS,-EJKD,-EJKS) | M131803 | 
| Fuel Filter (-790000) | MIU804763 | 
| Fuel Filter (790001-) | M811032 | 
| Engine Oil Filter | M806419 | 
| Hydraulic Oil Filter | RE27284 | 
Serial Numbers
John Deere 790 serial number location: PIN plate on the rear of the tractor.
| Year | Serial Number | 
| 2000 | LV0790G390001 | 
| 2001 | LV0790G490001 | 
| 2002 | LV0790G570001 | 
| 2003 | LV0790G592446 | 
| 2004 | LV0790G790001 | 
| 2005 | LV0790G890001 | 
| 2006 | LV0790G990001 | 
| 2007 | LV0790S190001 |