Structure dataEngine ModelYG170MMEngine Type1-Cylinder,doublecam,4-Stroke,water-cooledStart systemElectricCylinder diameter70 (mm)Piston journey65 (mm)Cylinder dimension250 (ml)Nominal displacement250 (ml)Compression ratio0.459027778Capability parame
Detailed introduction to 250CC Motorcycle Engine:
| Structure data | ||
| Engine Model | YG170MM | |
| Engine Type | 1-Cylinder,doublecam,4-Stroke,water-cooled | |
| Start system | Electric | |
| Cylinder diameter | 70 (mm) | |
| Piston journey | 65 (mm) | |
| Cylinder dimension | 250 (ml) | |
| Nominal displacement | 250 (ml) | |
| Compression ratio | 0.459027778 | |
| Capability parameter | ||
| Max power | 19/8500±500 (kw/(r/min)) | |
| Standard power | 17/8500±500 (kw/(r/min)) | |
| Max torque | 21/7500±500 (N·m/(r/min)) | |
| Consumption(g/kw.h) | ≤354 | |
| Minidle speed | 1500±150 (r/min) | |
| Pollution C0:% HC:ppm | CO≤3.8 Hc≤800 | |
| Starting capability | ≤15 | |
| Transmission data | ||
| Clutch type | Wet and multitudinous | |
| Transmission system | Chain | |
| Transmission type | Gear | |
| Primary transmission ratio | 2.727 | |
| Gear transmission ratio | I1 | 2.846 |
| I2 | 1.777 | |
| I3 | 1.333 | |
| I4 | 1.041 | |
| I5 | 0.885 | |
| I6 | 0.785 | |
| Fuel data | ||
| Fuel type | RQ-90 | |
| Capacity | 1.4(L) | |
| Lubricating oil | 15W/40-SE | |
| Air cleaner | ≥135m3/h | |
| Carburetor | Z30V | |
| Spark plug | TORCH C9EH | |
| Pump type | Inner and outside rotor | |
| Magnetor type | Magnetizing | |