Introduction
Hefty F Utility Tractor
The Hefty F is a utility tractor manufactured in Juneau, Wisconsin, USA, between 1974 and 1978. Designed for general agricultural and utility tasks, this model represents a standard configuration for small-scale operations during that period.
Engine and Performance
The tractor is powered by a Continental R800-46 gasoline engine, a liquid-cooled, four-cylinder unit manufactured by Renault. It produces 27 horsepower (20.1 kW) at a rated speed of 3300 RPM. The engine features an 8:1 compression ratio and a 0.8-liter displacement, utilizing a 1-3-4-2 firing order.
Transmission and Drivetrain
The Hefty F utilizes a gear-type transmission providing 6 forward speeds and 1 reverse gear, operated via a mechanical dry disc clutch. The drivetrain is configured as a two-wheel-drive system with spur gear final drives. Braking is managed through mechanical disc brakes, and the steering system is manual.
Hydraulics and Hitch
The hydraulic system is an open-center design with a pump flow of 3.2 gpm (12.1 lpm) and a system pressure of 2000 psi (137.9 bar). The rear hitch is a Category I three-point hitch equipped with position control. It offers a lift capacity of 1210 lbs (548 kg) at 24 inches behind the hitch points, and up to 1570 lbs (712 kg) at the link ends.
Dimensions and Capacity
With a wheelbase of 68 inches (172 cm), the tractor has a shipping weight of 2200 lbs (997 kg). The machine offers significant versatility through adjustable front and rear tread widths to accommodate different row spacings. The ground clearance under the frame is 18.5 inches (46 cm).
Conclusion
The Hefty F is a compact, straightforward utility tractor suited for light-duty agricultural work and property maintenance. Its reliance on a proven Continental engine and basic mechanical systems makes it a practical machine for owners seeking simplicity and serviceability.
Production Information of Hefty, F
- Utility tractor
- Built in Juneau, Wisconsin, USA
| Manufacturer | Hefty |
|---|
Dimension and Tires Information of Hefty, F
| Rear tread | 38 to 62 inches [96 to 157 cm (F)] |
|---|---|
| Wheelbase | 68 inches [172 cm] |
| Ground clearance | 18.5 inches (frame) [46 cm] |
| Shipping weight | 2200 lbs [997 kg] |
| Length | 101 inches [256 cm] |
| Front tread | 40 to 60 inches [101 to 152 cm (F)] |
| Clearance (front axle) | 16 inches [40 cm] |
| Height (steering wheel) | 58 inches [147 cm] |
| Rear tread | 60 to 84 inches [152 to 213 cm (FW)] |
| Rear tread | 46 to 84 inches [116 to 213 cm (FN)] |
| Front tread | 60 to 80 inches [152 to 203 cm (FW)] |
| Front tread | 48 to 76 inches [121 to 193 cm (FN)] |
| Clearance (rear axle) | 19.5 inches [49 cm] |
| Ag front | 5.00-15 |
|---|---|
| Ag rear | 11.2-24 |
| Ag front | 6.00-12 |
Engine Specifications of Hefty, F
- Continental R800-46
- Liquid-cooled inline
- 4-cylinder
- Gasoline
- The Continental R800 engine was built by Renault.
| Power | 27 hp [20.1 kW] |
|---|---|
| Firing order | 1-3-4-2 |
| Displacement | 51.6 ci [0.8 L] |
| Bore/Stroke | 2.28x3.14 inches [58 x 80 mm] |
| Rated RPM | 3300 |
| Compression | 8:1 |
| Coolant capacity | 5 qts [4.7 L] |
| Starter volts | 12 |
| Starter | Electric |
Transmission Information of Hefty, F
Transmission variants 1
- Two speeds, plus reverse, in three ranges.
| Type | Gear |
|---|---|
| Gears | 6 forward and 1 reverse |
| Clutch | Mechanical dry disc |
Mechanical Specs of Hefty, F
- Two-wheel drive
- Open operator station.
- Mechanical disc brakes
- Manual steering
| Final drives | Spur gear |
|---|
Power Information of Hefty, F
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540 (1.375) |
Hydraulics Specifications of Hefty, F
| Type | Open center |
|---|---|
| Pressure | 2000 psi [137.9 bar] |
| Pump flow | 3.2 gpm [12.1 lpm] |
Three-Point Hitch of Hefty, F
| Rear Type | I |
|---|---|
| Rear lift (at 24"/610mm) | 1210 lbs [548 kg] |
| Control | Position control |
| Rear lift (at ends) | 1570 lbs [712 kg] |
Electrical System of Hefty, F
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
Its power puts it in the 16th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Hefty F have?
The Hefty F delivers 27 HP.
What years was the Hefty F produced?
The Hefty F was produced in 1974-1978.
What engine does the Hefty F have?
The Hefty F is powered by a Gasoline, 4-cylinder engine.
What transmission does the Hefty F use?
The Hefty F uses a Gear transmission.
How much does the Hefty F weigh?
The Hefty F weighs 2200 lbs [997 kg].
Is the Hefty F 4WD?
The Hefty F is available in 2WD.