Introduction
Simplicity 7790H Garden Tractor
The Simplicity 7790H is a garden tractor manufactured between 1984 and 1985 in Port Washington, Wisconsin, USA. Designed for lawn maintenance and light-duty property tasks, this model represents a period of American manufacturing focused on operator accessibility and mechanical simplicity.
Engine and Performance
The tractor is powered by an air-cooled, 2-cylinder engine with a displacement of 790 cc (48.21 ci). It produces 18.5 hp (13.8 kW) at a rated speed of 2800 RPM. The engine utilizes a dry-type air cleaner and features an electric starter system operating on 12 volts. Maintenance intervals for the oil change are specified at 300 hours.
Transmission and Drivetrain
Power is delivered through a belt-driven hydrostatic transmission, providing infinite forward and reverse speed control without the need for traditional gear shifting. The machine is configured as a two-wheel drive unit, utilizing spur gear final drives to transfer power to the rear wheels.
Mechanical Systems and Chassis
The 7790H features manual steering, with power steering available as an optional upgrade. Braking is managed by mechanical band brakes. The operator occupies an open station design. The tractor weighs approximately 689 lbs (312 kg) and has a wheelbase of 48.1 inches (122 cm).
Tires and Implements
The unit is equipped with lawn and turf tires sized 16-6.50x8 for the front and 23-10.50x12 for the rear, optimized for stability on grass surfaces. It supports 42-inch or 48-inch mower decks and offers an optional sleeve hitch for towing light attachments.
Conclusion
The Simplicity 7790H is a robust garden tractor suited for residential lawn care and light property management. Its hydrostatic transmission and 18.5 hp engine configuration provide the necessary versatility for users requiring reliable performance in a compact, two-wheel-drive platform.
Production Information of Simplicity, 7790H
- Original price was $6,099 in 1985
- Garden tractor
- Built in Port Washington, Wisconsin, USA
| Manufacturer | Simplicity |
|---|
Dimension and Tires Information of Simplicity, 7790H
| Wheelbase | 48.1 inches [122 cm] |
|---|---|
| Height (hood) | 35.7 inches [90 cm] |
| Height (steering wheel) | 39.7 inches [100 cm] |
| Length | 70 inches [177 cm] |
| Weight | 689 lbs [312 kg] |
| Width | 38.9 inches [98 cm] |
| Lawn/turf front | 16-6.50x8 |
|---|---|
| Lawn/turf rear | 23-10.50x12 |
Engine Specifications of Simplicity, 7790H
- Air-cooled
- 2-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 790 cc [48.21 ci] |
| Oil change | 300 h |
| Air cleaner | Dry |
| Bore/Stroke | 3.386x2.677 inches [86 x 68 mm] |
| Starter | Electric |
| Rated RPM | 2800 |
| Power | 18.5 hp [13.8 kW] |
Transmission Information of Simplicity, 7790H
Transmission variants 1
| Type | Belt-driven hydrostatic |
|---|---|
| Gears | Infinite forward and reverse |
| Oil capacity | 3 qts [2.8 L] |
Mechanical Specs of Simplicity, 7790H
- Two-wheel drive
- Mechanical band brakes
- Open operator station.
| Final drives | Spur gear |
|---|---|
| Steering | Manual |
Three-Point Hitch of Simplicity, 7790H
| Type | Sleeve hitch |
|---|
Optional. Part number 1600055.
Electrical System of Simplicity, 7790H
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery CCA | 500 |
| Charging system | Flywheel alternator |
| Battery Group | 24 |
| Charging amps | 16 |
Where it sits
With 18 HP, the Simplicity 7790H sits between Regent 17H (17 HP) and 4041 (19 HP) in Simplicity's range. Its power puts it in the 93th percentile of 1980s models in our database (977 machines).
Frequently asked questions
How much horsepower does the Simplicity 7790H have?
The Simplicity 7790H delivers 18 HP.
What years was the Simplicity 7790H produced?
The Simplicity 7790H was produced in 1984-1985.
What engine does the Simplicity 7790H have?
The Simplicity 7790H is powered by a 2-cylinder engine.
What transmission does the Simplicity 7790H use?
The Simplicity 7790H uses a Belt-driven hydrostatic transmission.
How much does the Simplicity 7790H weigh?
The Simplicity 7790H weighs 689 lbs [312 kg].
Is the Simplicity 7790H 4WD?
The Simplicity 7790H is available in 2WD.