★<b>About certification:</b><br> We can only provide CE certification, there is no other certification can be provided,thanks for your understanding<br> Note: Please install gear oil first before using the motor.Otherwise the motor will be damaged.Please contact us if you need videos.<br> Two strokes 3.5 hp and 3.6 hp are controlled by the handle, which is operated by the clutch. There is no Neutral, only idle mode or low speed mode<br> Durable cast aluminum construction for superior corrosion protection<br> Through the prop exhaust outlet for decreased noise and pollutant<br><br> Black propeller or white propeller would be sent in random<br> Shipping Weight: 21.4 pounds<br> Short shaft ：40cm<br> Stroke: 2-Stroke <br> Engine(HP): 3.6HP<br> Ignition Systerm: CDI system<br> Cooling Systerm: Water Cooling<br><br> ★<b>Hard to start</b><br> 1.please make sure the ratio of Gasoline: Oil = 35：1.Please DO use special oil for 2-stroke motor.<br> 2.press the button on the carburetor for several times until the yellow and black pipes are full of oil.<br> 3.leave the throttle in the start position before starting,and then keep it in the ON position after running<br><br> ★<b>P.S.</b><br> About the noise: all the gasoline machines are noisy, currently we did not test the decibel , but the noise is the same as the motorcycle, so it is a normal phenomenon The machine itself is lightweight, it can use on boat weight of 100kg or less , load-bearing 4 people, but the speed is certainly not the same when one person on it or 4 people on it . Customer who has high expectations on speed, please be noticed<br> It can be marched with inflatable boats, rubber boats or fishing boats<br> Necessary: you have to prepare a boat-motor stand or Hanging board on your boat<br>