Engine type: single cylinder,air-cooled，two-stroke Engine model: YD45 Engine Displacement: 45cc Engine power:1.8kw/7000rpm Max Speed :11500r/min ldling Speed :2800rpm±200rpm Carburetor type:diaphragm type Starting system:Recoiled,iuauel Fuel tank capacity:550ml Fuel/oil tank capacity:260ml Gasoline:Engine oil=25:1 Chainsaw lubrication type:Autamatic pump with adjustr Chain pitch:0.325or0.375” Bar length:18”(455mm) Packing size:color box41*26*31cm Measurement:54*42*32.5cm Quantity per carton:2pcs N.W/G.W:7.2KG/8KG