Ariens lawn tractors S-12H
Power
12 hp
Production
1976-1978
Engine
1-cylinder
Transmission
Sunstrand
Weight
895 lbs [405 kg]
Drive
2WD
From the same series:
Introduction
Ariens S-12H Garden Tractor
The Ariens S-12H is a garden tractor produced between 1976 and 1978 in Brillion, Wisconsin, USA. Designed for residential lawn care and light landscaping duties, this model belongs to the Ariens S-series lineup.
Engine and Performance
The tractor is powered by a 12 horsepower (gross), single-cylinder, air-cooled engine with a displacement of 476 cc (29.07 ci). It features a bore and stroke of 3.375 by 3.25 inches and a compression ratio of 6.6:1. The engine utilizes a dry element air cleaner with a foam pre-cleaner to protect internal components during operation. Fuel consumption is rated at approximately 1 gallon per hour.
Transmission and Drivetrain
Power is delivered through a shaft-driven hydrostatic transmission manufactured by Sunstrand. This system provides infinite forward and reverse gearing, allowing for smooth speed control without manual shifting. The tractor utilizes a two-wheel drive configuration and is equipped with drum brakes for deceleration.
Electrical and PTO
The electrical system operates on 12 volts, supported by a 39 Ah battery with a 255 CCA rating. Charging is handled by a flywheel alternator system providing 15 charging amps. The tractor includes an independent front Power Take-Off (PTO) system, engaged via an electric clutch, which facilitates the operation of compatible implements such as a 42 or 48-inch mower deck.
Dimensions and Chassis
The S-12H features an open operator station with manual steering. It has a wheelbase of 48 inches, an overall length of 74.75 inches, and a width of 43 inches. The shipping weight is 405 kg (895 lbs). The machine is fitted with 16x6.50-8 front tires and 23x8.50-10 rear tires, designed specifically for lawn and turf applications.
Conclusion
The Ariens S-12H is a robust, mechanically straightforward garden tractor suitable for homeowners and collectors. Its hydrostatic drive and independent PTO make it a versatile tool for mowing and basic grounds maintenance tasks.
Production Information of Ariens lawn tractors, S-12H
- Garden tractor
- Built in Brillion, Wisconsin, USA
| Manufacturer | Ariens |
|---|
Dimension and Tires Information of Ariens lawn tractors, S-12H
| 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 | 16x6.50-8 |
|---|---|
| Lawn/turf rear | 23x8.50-10 |
Engine Specifications of Ariens lawn tractors, S-12H
- Air-cooled horizontal-shaft
- 1-cylinder
| Starter | Electric |
|---|---|
| Displacement | 476 cc [29.07 ci] |
| Oil capacity | 2 qts [1.9 L] |
| Fuel use | 1 gal/hour [3.8 l/hour] |
| Bore/Stroke | 3.375x3.25 inches [86 x 83 mm] |
| Sparkplug gap | 0.025 inches [0.635 mm] |
| Starter volts | 12 |
| Compression | 6.6:1 |
| Air cleaner | Dry element with foam precleaner |
| Power (gross) | 12 hp [8.9 kW] |
Transmission Information of Ariens lawn tractors, S-12H
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-12H
- Two-wheel drive
- Open operator station.
- Drum brakes
| Steering | Manual |
|---|
Power Information of Ariens lawn tractors, S-12H
| Front PTO | Independent |
|---|---|
| Clutch | Electric |
| Front PTO Type | 3600 |
Three-Point Hitch of Ariens lawn tractors, S-12H
| Rear Type(optional) | 0 |
|---|
Electrical System of Ariens lawn tractors, S-12H
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery CCA | 255 |
| Charging system | Flywheel alternator |
| Battery AH | 39 |
| Charging amps | 15 |
Where it sits
With 12 HP, the Ariens lawn tractors S-12H sits between S-10G (10 HP) and S-14G (14 HP) in Ariens lawn tractors's range. Its power puts it in the 76th percentile of 1970s models in our database (1008 machines).
Frequently asked questions
How much horsepower does the Ariens lawn tractors S-12H have?
The Ariens lawn tractors S-12H delivers 12 HP.
What years was the Ariens lawn tractors S-12H produced?
The Ariens lawn tractors S-12H was produced in 1976-1978.
What engine does the Ariens lawn tractors S-12H have?
The Ariens lawn tractors S-12H is powered by a 1-cylinder engine.
What transmission does the Ariens lawn tractors S-12H use?
The Ariens lawn tractors S-12H uses a Sunstrand transmission.
How much does the Ariens lawn tractors S-12H weigh?
The Ariens lawn tractors S-12H weighs 895 lbs [405 kg].
Is the Ariens lawn tractors S-12H 4WD?
The Ariens lawn tractors S-12H is available in 2WD.