The Wheel Horse 312-8 is a 2WD lawn and garden tractor from the 300 series. This tractor was manufactured by Wheel Horse from 1985 to 1997.
Wheel Horse 312-8 is equipped with one of two engines: the Kohler K301S, a 0.5 L (29.0 cu·in) single-cylinder gasoline engine (1985-1987), or the Kohler M12S, a 0.5 L (29.0 cu·in) single-cylinder gasoline engine (after 1987) and belt-driven gear transmission with 6 forward and 2 reverse gears.
The tractor could be equipped with the following engines:
- Kohler K301S. It is a 0.5 L, 476 cm2, (29.0 cu·in) single-cylinder natural aspirated gasoline engine with 86.0 mm (3.39 in) of the cylinder bore and 83.0 mm (3.27 in) of the piston stroke. This engine produced 12.2 PS (8.9 kW; 12.0 HP) at 3,600 rpm of output power.
- Kohler M12S. It is a 0.5 L, 476 cm2, (29.0 cu·in) single-cylinder natural aspirated gasoline engine. The cylinder bore is 86.0 mm (3.39 in) and the piston stroke is 83.0 mm (3.27 in). The compression ratio rating is 6.6:1. This engine produced 12.2 PS (8.9 kW; 12.0 HP) at 3,600 rpm of output power.
The Wheel Horse 312-8 is equipped with manual steering, open operator station, and 8.5 liters (2.2 US gal.; 1.9 Imp. gal) fuel tank.
Following attachments are available for the WH 312-8 lawn tractor:
- 910 mm (36 in) mower deck with manual lift
- 930 mm (37 in) mower deck with manual lift
- 1,060 mm (42 in) mower deck with manual lift and 3-blades
- 1,210 mm (48 in) mower deck with manual lift and 3-blades
- Front-mount 1,210 mm (48 in) blade
- Front-mount 1,060 mm (42 in) snow blower
- Front-mount 1,110 mm (44 in) snow blower
Wheel Horse 312-8 Specifications
| General Specifications | |
| Model | Wheel Horse 312-8 |
| Length | 1,650 mm (65 in) |
| Width | 920 mm (36.2 in) |
| Height | 1,070 mm (42.1 in) |
| Wheel base | 1,150 mm (45.3 in) |
| Weight | 248 kg (547 lbs) |
| Fuel tank capacity | 8.5 liters (2.2 US gal.; 1.9 Imp. gal) |
| Battery | 12V, 24Ah, CCA: 160A |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Kohler K301S |
| Engine type | Four-stroke, air-cooled, inline |
| Cylinders | 1 |
| Fuel type | Gasoline |
| Displacement | 0.5 L, 476 cm2, (29.0 cu·in) |
| Bore and stroke | 86.0 mm X 83.0 mm (3.39 in X 3.27 in) |
| Horsepower | 12.2 PS (8.9 kW; 12.0 HP) at 3,600 rpm |
| Starter | Electric |
| Oil type | API SF or SG |
| Spark plug | Champion RH10 |
| Engine | |
| Engine model | Kohler M12S |
| Engine type | Four-stroke, air-cooled, inline |
| Cylinders | 1 |
| Fuel type | Gasoline |
| Displacement | 0.5 L, 476 cm2, (29.0 cu·in) |
| Bore and stroke | 86.0 mm X 83.0 mm (3.39 in X 3.27 in) |
| Compression ratio | 6.6:1 |
| Horsepower | 12.2 PS (8.9 kW; 12.0 HP) at 3,600 rpm |
| Starter | Electric |
| Oil type | API SF or SG, SAE: 5W-30 |
| Oil capacity: | 2.4 L (2.5 US. qt, 2.1 Imp. qt.) |
| Spark plug | Champion RH10 |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | – |
| Transmission model | |
| Transmission type | Belt-driven gear |
| Gears | 6 forward and 2 reverse |
| Speed | Forward: 8.8 kmh (5.5 mph) Reverse: 4.2 (2.6 mph) |
| Transmission oil capacity | 1.9 L (0.5 US. gal, 0.4 Imp. gal.) |
| Tires | |
| Front tires | Lawn/turf: 15×6.00-6 |
| Rear tires | Lawn/turf: 22×9.00-12 |
| PTO (Power take-off shaft) | |
| Front PTO type | Independent with mechanical clutch |
| Front PTO speed | – |
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