Introduction
Sears GT/18 Hydro Garden Tractor
The Sears GT/18 Hydro, manufactured by Roper and introduced in 1978, is a garden tractor designed for residential lawn care and property maintenance. Positioned as a versatile compact machine, it reflects the engineering standards of late 1970s utility equipment.
Engine and Performance
The tractor is powered by an air-cooled, horizontal-shaft opposed twin-cylinder engine, delivering a gross power output of 18 hp (13.4 kW). With a displacement of 781 cc and a bore/stroke ratio of 3.25 x 2.875 inches, the engine requires oil changes every 25 hours of operation to maintain performance. It is equipped with a 12-volt electric starter system.
Transmission and Drive
The GT/18 Hydro utilizes a belt-driven hydrostatic transmission, which allows for infinite forward and reverse speed adjustments without manual gear shifting. The transmission operates on Type F ATF fluid, with a total capacity of 4.5 quarts (4.3 liters). The tractor features a two-wheel drive configuration.
Mechanical and Dimensions
The machine features manual steering and an open operator station. Its physical footprint measures 68.5 inches in length, 36.5 inches in width, and 41.4 inches in height, with a shipping weight of 688 lbs. It is fitted with 16x6.50-8 front tires and 23x10.00-12 rear tires designed for lawn and turf applications.
Equipment Compatibility
The tractor is designed to support mower deck attachments in 42-inch or 48-inch configurations, providing flexibility for various lawn sizes and terrain conditions.
Conclusion
The Sears GT/18 Hydro serves as a functional garden tractor for homeowners requiring a mid-range power output for mowing and light maintenance tasks. Its hydrostatic transmission and straightforward mechanical design are representative of the era's focus on operational simplicity.
Production Information of Sears lawn tractors, GT/18 Hydro
- Original price was $2,479 in 1978
- Garden tractor
| Distributor | Sears |
|---|---|
| Manufacturer | Roper |
Dimension and Tires Information of Sears lawn tractors, GT/18 Hydro
| Length | 68.5 inches [173 cm] |
|---|---|
| Shipping weight | 688 lbs [312 kg] |
| Width | 36.5 inches [92 cm] |
| Height | 41.4 inches [105 cm] |
| Lawn/turf front | 16x6.50-8 |
|---|---|
| Lawn/turf rear | 23x10.00-12 |
Engine Specifications of Sears lawn tractors, GT/18 Hydro
- Air-cooled horizontal-shaft opposed twin
| Power (gross) | 18 hp [13.4 kW] |
|---|---|
| Displacement | 781 cc [47.7 ci] |
| Oil capacity | 1.75 qts [1.7 L] |
| Starter | Electric |
| Bore/Stroke | 3.25x2.875 inches [83 x 73 mm] |
| Oil change | 25 h |
| Starter volts | 12 |
Transmission Information of Sears lawn tractors, GT/18 Hydro
Transmission variants 1
| Type | Belt-driven hydrostatic |
|---|---|
| Type(optional) | Type F ATF |
| Oil type | Type F ATF |
| Gears | Infinite forward and reverse |
| Oil capacity | 4.5 qts [4.3 L] |
Mechanical Specs of Sears lawn tractors, GT/18 Hydro
- Two-wheel drive
- Manual steering
- Open operator station.
Electrical System of Sears lawn tractors, GT/18 Hydro
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
With 18 HP, the Sears lawn tractors GT/18 Hydro sits between ST/16 (16 HP) and GT/19.9 (19 HP) in Sears lawn tractors's range. Its power puts it in the 98th percentile of 1970s models in our database (1008 machines).
Frequently asked questions
How much horsepower does the Sears lawn tractors GT/18 Hydro have?
The Sears lawn tractors GT/18 Hydro delivers 18 HP.
What years was the Sears lawn tractors GT/18 Hydro produced?
The Sears lawn tractors GT/18 Hydro was produced in 1978.
What transmission does the Sears lawn tractors GT/18 Hydro use?
The Sears lawn tractors GT/18 Hydro uses a Belt-driven hydrostatic transmission.
How much does the Sears lawn tractors GT/18 Hydro weigh?
The Sears lawn tractors GT/18 Hydro weighs 688 lbs [312 kg].
Is the Sears lawn tractors GT/18 Hydro 4WD?
The Sears lawn tractors GT/18 Hydro is available in 2WD.