| Model:SK139QMB | Type: single cylinder four stroke, forced air cooling, horizontal |
| Cylinder diameter: Φ 39mm | Piston stroke: 41.5mm |
| Displacement: 49.6ml | Rated power and rated speed: 3.2kw/7500r/min |
| Maximum torque and corresponding speed: 2.8n · M / 6500r / min | Minimum fuel consumption rate: 367g / kW · H |
| Fuel grade: Unleaded Gasoline above 90 | Oil grade: sf15w / 40 gb11121-1995 |
| Transmission type: toothed V-belt | Continuously variable speed: 1.5-0.6 |
| Gear ratio: 11.5:1 | Ignition mode: CDI contactless ignition |
| Carburetor type and model: vacuum film carburetor pd18 | Spark plug model: A7RTC |
| Starting mode: both electric and pedal | |