The Simplicity Sovereign 18H is a 2WD garden tractor from the Sovereign series. This tractor was manufactured by Simplicity in Port Washington, Wisconsin, USA from 1993 to 2000. The Sovereign 18H is equipped with a 0.6 L (38.1 cu·in) two-cylinder gasoline engine and a belt-driven hydrostatic transmission with infinite forward and reverse gears.
The Simplicity Sovereign 18H garden tractor used the Kohler CH18 engine. It is a 0.6 L, 624 cm2, (38.1 cu·in) two-cylinder natural aspirated gasoline engine with 77.0 mm (3.03 in) of the cylinder bore and 67.0 mm (2.64 in) of the piston stroke. The compression ratio rating is 8.5:1. This engine produced 18.2 PS (13.4 kW; 18.0 HP) at 3,600 rpm of output power.
The Simplicity Sovereign 18H is equipped with manual or power (optional) steering, open operator station and 11.4 liters (3 US gal.; 2.5 Imp. gal) fuel tank.
Following attachments are available for the Simplicity Sovereign 18H garden tractor:
- Mid-mount Simplicity 1691218: 42 in (1,060 mm) mower deck
- Mid-mount Simplicity 1691219: 48 in (1,210 mm) mower deck
- Front-mount Simplicity 1691520: 48 in (1,060 mm) blade
- Front-mount Simplicity 1691521: 36 in (910 mm) snowblower
- Front-mount Simplicity 1691522: 42 in (1,060 mm) snowblower
AGCO 918H Specifications
| General Specifications | |
| Model | Simplicity Sovereign 18H |
| Length | 1,770 mm (69.7 in) |
| Width | 930 mm (36.6 in) |
| Height (steering wheel) | 1,000 mm (39.4 in) |
| Wheel base | 1,280 mm (50.4 in) |
| Weight | 312 kg (688 lbs) |
| Fuel tank capacity | 11.4 liters (3 US gal.; 2.5 Imp. gal) |
| Battery | 12V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Kohler CH18 |
| Engine type | Four-stroke, air-cooled, V-twin |
| Cylinders | 2 |
| Fuel type | Gasoline |
| Displacement | 0.6 L, 624 cm2, (38.1 cu·in) |
| Bore and stroke | 77.0 mm X 67.0 mm (3.03 in X 2.64 in) |
| Compression ratio | 8.5:1 |
| Horsepower | 18.2 PS (13.4 kW; 18 HP) at 3,600 rpm |
| Starter | Electric |
| Oil type | SAE 10W-30 |
| Oil capacity: | 1.9 L (2 US. qt, 1.7 Imp. qt.) |
| Spark plug | Champion RC12YC |
| Transmission and chassis | |
| Chassis | 2WD |
| Steering type | Manual or power (optional) |
| Brakes | – |
| Transmission model | – |
| Transmission type | Belt-driven hydrostatic |
| Gears | Infinite forward and reverse |
| Speed | Forward: 11.3 kmh (7.0 mph) Reverse: 6.4 kmh (4.0 mph) |
| Tires | |
| Front tires | Lawn/turf: 16×6.50-8 |
| Rear tires | Lawn/turf: 23×10.5-12 |
| Three-Point Hitch | |
| Category | Sleeve hitch (optional) |
| Control type | – |
| Lift capacity (at ends) | kg (0 lbs) |
| PTO (Power take-off shaft) | |
| Middle PTO type | Independent with manual clutch |
| Middle PTO speed | – |
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