The Ford 7840 tractor specifications include PTO power rated at 90 hp (67.1 kW), a constant mesh, two-speed power shift, synchronized, or four-speed power shift transmission, and a listed weight of 8,076 to 10,274 lbs.
Ford 7840 key specifications
| PTO power |
90 hp (67.1 kW) |
| Displacement |
401 cu in (6.6 L) |
| Transmission |
constant mesh, two-speed power shift, synchronized, or four-speed power shift |
| Fuel capacity |
57.5 gal (217.6 L) |
| Weight |
8,076 to 10,274 lbs |
| Rear PTO speed |
540 or 1,000 rpm |
Ford 7840 industry comparison
See how this tractor compares across up to six main specifications using the low, average and high values for Ford farm and compact tractors in this specifications database.
PTO power90 hp
Low 11 hpAverage 78.8 hpHigh 316 hp
Displacement6.6 L
Low 0.7 LAverage 4.4 LHigh 14.8 L
Fuel capacity57.5 gal
Low 3.5 galAverage 40.3 galHigh 286 gal
Maximum listed weight10,274 lbs
Low 1,344 lbsAverage 8,007.5 lbsHigh 32,500 lbs
This model Ford farm and compact tractors average
Ford 7840 power chart
Compare the available engine, PTO and drawbar power ratings.
Tested drawbar power75.2 hp
Ford 7840 capacity chart
Compare the tractor's listed fuel, hydraulic and service-fluid capacities.
Maximum fuel capacity217.6 L
Ford 7840 dimensions chart
Compare the main listed tractor dimensions using centimetres.
Power and performance
| Original price |
$35,650 in 1996 |
Engine specifications
| Bore/Stroke |
4.40 × 4.40 inches (112 × 112 mm) |
| Rated RPM |
2,100 |
| Compression |
17.5:1 |
| Oil capacity |
22.1 qt (20.9 L) |
| Coolant capacity |
21.1 qt (20.0 L) |
| Starter volts |
12 |
| Engine speed range |
725-2,275 |
| Firing order |
1-5-3-6-2-4 |
| Intake valve clearance |
0.016 inches (0.406 mm, cold) |
| Exhaust valve clearance |
0.019 inches (0.483 mm, cold) |
Transmission options
| Gear options |
8 forward and 2 reverse, 16 forward and 4 reverse, 12 forward and reverse, or 16 forward and reverse |
| Clutch |
dry disc or wet disc |
| Oil capacity |
69.6 qt (65.9 L) or 64 qt (60.6 L) |
PTO and hitch
| Drawbar (tested) |
75.2 hp (56.1 kW) |
| PTO (tested) |
90.4 hp (67.4 kW) |
| Rear hitch category |
Category II |
| Hitch control |
Position control and top-link draft sensing. Electronic lower-link sensing optional on 7,840 SLE. |
| Rear lift (at 24"/610mm) |
6,210 lbs (2,816 kg, SL) |
| Rear PTO |
independent |
Hydraulics
| Hydraulic type |
open center (S/SL) |
| Valves |
1 to 4 |
| Pump flow |
17.4 gpm (65.9 L/min) |
| Steering pressure |
2,100 psi (144.8 bar) |
Mechanical specifications
| Drive |
4×2 2WD |
| Final drives |
inboard planetary |
| Differential lock |
electro-hydraulic (SLE) |
| Brakes |
mechanical (S) |
Electrical specifications
| Electrical ground |
negative |
| Charging system |
alternator |
| Charging amps |
55 (ROPS) |
| Batteries |
1 (ROPS) |
| Battery CCA |
800 |
| Battery volts |
12 |
Dimensions and weight
| Listed weight range |
8,076 to 10,274 lbs |
| Length |
176 inches (447 cm) |
| Width |
83 inches (210 cm) |
| 2WD front axle clearance |
23 inches (58 cm) |
| 4WD front axle clearance |
22 inches (55 cm) |
| Hood height |
70 inches (177 cm) |
| Cab height |
110 inches (279 cm) |
| Exhaust height |
114 inches (289 cm) |
Tires and tread
| Front tire |
10.00-16 |
| Rear tire |
18.4-34 |
Note: Industry comparison values are calculated from models in this specifications database. Specifications can vary by year, market, configuration, tires and optional equipment. For official specifications, check the tractor’s original operator, service or parts manual.
