Summary ï¼? Advantages:Needless to replace the internals of the engine head,just handle the handle to operate it. Easy to operate.More time-saving and effortless.Drilling faster and more efficient. Have reached the Tip-top level of the same field now,and allow to be replaced with the same kind of the domestic products. Applications:Available for drilling,splitting breaking, ramming, shovelling. And widely used in mining,road-construction, quarrying and national defense construction,etc. TECHNICAL SPECIFICATIONS 1.Weight of the main machine: 27kg 2.Overall dimension: 746Ã?315Ã? 229mm 3.Type of engine:single cylinder,air cooled two strokes 4.Cylinder DiameterÃ?Stroke of piston:5 8 Ã? 70mm 5. Rotating speed of engine: â?¥2450r/min 6.Displacement of engine plston: 185cm37.Type of carburetor: hand needle valve,no floating type 8.Ignition system: Controllable silicon contactless system 9. Drilling speed:(mean value of five holes) â?¥ 250mm /min 10. Max. drilling depth: â?¥ 6m 11.Fuel consumption: 0.122 /m 12.Tank capacity:â?¥ 1.14L 13. Mixing ratio of gasoline and lubrication oil (in volumes):12:1 14. End of drill rod dimensions: hexagonal2 2 Ã? 108mm 15. Rotating speed of drill rod:â?¥200r/min 16. Clearance of Spark plug :0.5 -0.7mm