1P39QMB：Single-cylinder,four-stroke,forced air-cooled,electric/kick start 50cc
SPECIFICATION

Displacement: 49.5ml
Compression ratio: 10.5:1
Primary reduction: 0.8—2.4
Bore*Stroke:39mm*41.4mm
Max.Net Power & Rotating Speed:2.2kw/7500r/min
Rated Power & Rotating Speed:1.8kw/7500r/min
Max.Torpue & Rotating Speed:2.6N.m/6000r/min
Min.Fuel Consumption: ≤450g/kw.h
Ldling Speed:1700r/min
Ignition:CDI
Starter:Electric starter/Kick starter
Lubrication: Pressure/splash
Transmission: automatic drive speed