The Yamaha YT6800 is a 2WD lawn tractor manufactured by Yamaha from 1989 to 1992. The Yamaha YT6800 is equipped with a 0.6 L (35.0 cu·in) two-cylinder gasoline engine and a belt-driven hydrostatic transmission with gears.
The Yamaha YT6800 lawn tractor used the Yamaha engine. It is a 0.6 L, 573 cm2, (35.0 cu·in) two-cylinder natural aspirated gasoline engine with 78.0 mm (3.07 in) of the cylinder bore and 60.0 mm (2.36 in) of the piston stroke. The compression ratio rating is 8.6:1. This engine produced 18.2 PS (13.4 kW; 18.0 HP) of power
The Yamaha YT6800 is equipped with manual steering, drum brakes, an open operator station, 9.5 liters (2.5 US gal.; 2.1 Imp. gal) fuel tank, and a mid-mount Yamaha 1,210 mm (480 in) mower deck with 3-blade.
Yamaha YT6800 Specifications
| General Specifications | |
| Model | Yamaha YT6800 |
| Length | 1,750 mm (68.9 in) |
| Width | 1,610 mm (63.4 in) |
| Height | 1,040 mm (40.9 in) |
| Wheel base | 1,170 mm (46.1 in) |
| Weight | 244 kg (538 lbs) |
| Fuel tank capacity | 9.5 liters (2.5 US gal.; 2.1 Imp. gal) |
| Battery | 12V, 26Ah |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Yamaha |
| Engine type | Four-stroke, air-cooled, V |
| Cylinders | 2 |
| Fuel type | Gasoline |
| Displacement | 0.6 L, 573 cm2, (35.0 cu·in) |
| Bore and stroke | 78.0 mm X 60.0 mm (3.07 in X 2.36 in) |
| Compression ratio | 8.6:1 |
| Horsepower | 18.2 PS (13.4 kW; 18.0 HP) |
| Starter | Electric |
| Oil capacity: | 1.8 L (1.9 US. qt, 1.6 Imp. qt.) |
| Spark plug | NGK BPR5HS |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | Drum |
| Transmission model | – |
| Transmission type | Belt-driven hydrostatic |
| Gears | – |
| Speed | Forward: 9.2 kmh (5.7 mph) Reverse: 4.5 kmh (2.8 mph) |
| Tires | |
| Front tires | Lawn/turf: 15×6.00-6 |
| Rear tires | Lawn/turf: 20×10.00-8 |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent with electric clutch |
| Rear PTO speed | – |

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