Introduction
Ariens S-18H Garden Tractor
The Ariens S-18H is a garden tractor produced between 1977 and 1978 in Brillion, Wisconsin, USA. Designed for residential and light-duty landscaping applications, this model belongs to the S-18H series and emphasizes mechanical simplicity and operator accessibility.
Engine and Performance
The tractor is powered by an air-cooled, single-cylinder engine with a displacement of 604 cc (36.9 ci). It delivers a gross power output of 18 hp (13.4 kW). The engine features a bore and stroke of 3.75 by 3.25 inches with a compression ratio of 8.1:1. It requires 2 quarts (1.9 L) of oil for lubrication and utilizes a dry element air cleaner with a foam pre-cleaner to maintain performance in dusty conditions.
Transmission and Drivetrain
The S-18H is equipped with a shaft-driven Sunstrand hydrostatic transmission, providing infinite forward and reverse speed control. The transmission system uses SAE 5W-30 oil with a capacity of 5.5 quarts (5.2 L), allowing for smooth operation during mowing and hauling tasks.
Electrical and PTO Systems
The electrical system operates on a 12-volt circuit, supported by a battery with 255 CCA and 39 AH capacity. Charging is managed by a flywheel alternator providing 15 amps. The tractor features independent front and rear PTOs, both utilizing an electric clutch for engagement, which provides flexibility for attaching various implements, including a compatible 42-inch or 48-inch mower deck.
Dimensions and Chassis
The chassis features manual steering and drum brakes, housed within an open operator station design. The tractor has a wheelbase of 48 inches (121 cm), a total length of 74.75 inches (189 cm), and a width of 43 inches (109 cm). The shipping weight of the unit is 895 lbs (405 kg). It is fitted with 16-6.50x8 front tires and 23-10.50x12 rear tires, suitable for lawn and turf applications.
Conclusion
The Ariens S-18H is a compact, robust garden tractor suitable for property owners requiring a versatile machine for mowing and light implement use. Its hydrostatic transmission and independent PTO system offer a high level of operational convenience for maintenance tasks within its power class.
Production Information of Ariens lawn tractors, S-18H
- Garden tractor
- Built in Brillion, Wisconsin, USA
| Manufacturer | Ariens |
|---|
Dimension and Tires Information of Ariens lawn tractors, S-18H
| Wheelbase | 48 inches [121 cm] |
|---|---|
| Shipping weight | 895 lbs [405 kg] |
| Height (steering wheel) | 47.75 inches [121 cm] |
| Length | 74.75 inches [189 cm] |
| Width | 43 inches [109 cm] |
| Lawn/turf front | 16-6.50x8 |
|---|---|
| Lawn/turf rear | 23-10.50x12 |
Engine Specifications of Ariens lawn tractors, S-18H
- Air-cooled horizontal-shaft
- 1-cylinder
| Starter | Electric |
|---|---|
| Displacement | 604 cc [36.9 ci] |
| Oil capacity | 2 qts [1.9 L] |
| Fuel use | 1.8 gal/hour [6.8 l/hour] |
| Bore/Stroke | 3.75x3.25 inches [95 x 83 mm] |
| Sparkplug gap | 0.025 inches [0.635 mm] |
| Starter volts | 12 |
| Compression | 8.1:1 |
| Air cleaner | Dry element with foam precleaner |
| Power (gross) | 18 hp [13.4 kW] |
Transmission Information of Ariens lawn tractors, S-18H
Transmission variants 1
| Transmission | Sunstrand |
|---|---|
| Oil type | SAE 5W-30 |
| Oil capacity | 5.5 qts [5.2 L] |
| Type | Shaft-driven hydrostatic |
| Type(optional) | SAE 5W-30 |
| Gears | Infinite forward and reverse |
Mechanical Specs of Ariens lawn tractors, S-18H
- Drum brakes
- Open operator station.
| Steering | Manual |
|---|
Power Information of Ariens lawn tractors, S-18H
| Rear PTO | Independent |
|---|---|
| Front PTO Type | 3600 |
| Clutch | Electric |
| Clutch | Electric |
| Front PTO | Independent |
Three-Point Hitch of Ariens lawn tractors, S-18H
| Rear Type(optional) | 0 |
|---|
Electrical System of Ariens lawn tractors, S-18H
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery CCA | 255 |
| Charging system | Flywheel alternator |
| Battery AH | 39 |
| Charging amps | 15 |
Where it sits
With 18 HP, the Ariens lawn tractors S-18H sits just above S-16H (16 HP) in Ariens 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 Ariens lawn tractors S-18H have?
The Ariens lawn tractors S-18H delivers 18 HP.
What years was the Ariens lawn tractors S-18H produced?
The Ariens lawn tractors S-18H was produced in 1977-1978.
What engine does the Ariens lawn tractors S-18H have?
The Ariens lawn tractors S-18H is powered by a 1-cylinder engine.
What transmission does the Ariens lawn tractors S-18H use?
The Ariens lawn tractors S-18H uses a Sunstrand transmission.
How much does the Ariens lawn tractors S-18H weigh?
The Ariens lawn tractors S-18H weighs 895 lbs [405 kg].