Yuri 18 Inch 1900W Gasoline Chain Saw 450Mm Yr-Gcs1126. Rated Output Power: 1900W; No-load Speed: 8500Rpm; Displacement: 58cc; Engine Type: Single Cylinder, Air-forced Cooling, Two Stroke; Bar Length: 18″ (450mm); Max Cutting Diameter: 450mm; Two-cycle Oil/Gasoline Mix Ratio: 1:25; Fuel Tank Capacity: 550ml; Engine Oil Tank Capacity: 260ml