Chainsaw Model LYJ45 Engine Model LY1E43F Engine Type Single Cylinder, 2-stroke, Forced air cooling Bore譙troke 43mm?1mm Displacement 45cc Compression Ratio 7.5:1 Rated Power 1.6Kw/7500rpm Max. Torque 2.0N.m/7000rpm Gasoline and Oil Mixed Ratio 25:1 Lubricating Oil 2-stroke Engine Oil Ignition T.C.I. Starting System Recoil Starter Chainsaw Dimension 480mm?60mm?00mm Chainsaw Net Weight 6.5kg Guide Bar Type Sprocket Nose Guide Bar Size 16in. (406.4mm) 18in. (457.2mm) 20in. (508.0mm) Pitch 0.325in. (9.27mm) Gauge 0.058in. (1.47mm) we also supply various model of chain saw