ENGINE YX 140cc

1:    MODEL:  4-stroke, oil-cooler, single cylinder, manual clutch, horizontal 2:    Bore*stroke:    56*57 3:    Cylinder capacity: 140ml  alloy cylinder 4:    Power/torque: ≥7.0kw /8500±500r/min 5:    Net maximum torque: ≥9.5N.m /5500±500r/min 6:    Mini fuel consumption: ≤354g/KW.h 7:    Ignition advanced angle:  15°±2° 8:    Valve gap(mm):        0.05±0.02 9:    Fuel mark:        above 90#   GB 484-89 10:   Engine oil mark :   SAEAPI 15W/40-SF 11:   Engine oil consumption : 8g/KW.h 12:   Transmission ratio :   elementary: 3.722(18/67)                    1 gear : 3.272(11/36)     2 gear: 1.937(16/31)                    3 gear : 1.350(20/27)     4gear : 1.043(23/24) 13:   spark plug size :      A7 TC 14:   spark plug gap:       0.6-0.7 16:   Ignition method:     CDI 17:   Clutch model      multi-plate    manual clutch 18:   Air filter model :    sponge air filter 19:   Lubricating system:  pressure splash 20:   Engine oil capacity:  1.0L 21:   Start method:      kick start ( start any gear) 22:   Size:         435*285*235 23:   N.W:      20±1KG