Product parameters: <br><br>1. Engine type:single cylinder,2Stroke,6.0HP,water-cooled. <br><br>2. Displacement:102.0cc. <br><br>3. Max. output:4.4KW. <br><br>4.Max speed(r/min):4500~5500 <br><br>5.Gear positions:F-N-R. <br><br>6.Ignition system:CDI <br><br>7.Control system:Tiller control. <br><br>8. Start system:Manual start. <br><br>9. Fuel tank copacity:2.5L. <br><br>10.Have the external port of fuel tank . <br><br>11.Recommended fuel:#92 Lead-free gasoline. <br><br>12.Bore×stroke(mm):55×43. <br><br>13.Recommended propeller range(in):3-7.8＂×8＂ <br><br>14.Engine oil:Two stroke engine oil. <br><br>15. G.W./N.W.:57/46Lbs. <br><br>16. Carton Size(L×W×H):44in×15in×24.4in. <br><br>Two stroke water cooling external engine ： please read the instruction before use. please precisely follow instruction use appropriate TOW STROKE engine oil. The engine MUST be under the warter before start it. Shaft length is 26 in，If the boat tailboard height less than 17.3 in, you can use