Item Name: Full Metal Hit & Miss Gas Engine. Weight: About 2.2kg(Engine+Wooden Base). Size Of Engine: 18012575mm(LWH). Size Of Wooden Base: 1806650mm(LWH). Fuel: ZIPPOOil or Gasoline. The best tappet clearance: 0.5mm. Revolutions Per minute:1200rmp. Open the bottom of base to check the wiring of the engine, connect the fuel tank piep, and install 3 AA batteries. Fill the fuel tank with gasoline(95#). When the filling is completed, make sure there’s no air in the oil pipe. Its role can make the mixed gasoline fully enter the cylinder. Turn on the power switch and turn the flywheel to start the engine counterclockwise on the right side of the engine(installing the flying hammer position). If the ignition device is normal and the cylinder is under normal compression, if the machine still does not start normally, it’s very likely that the carburetor needle should be adjusted. Screw the screw on the top of the carburetor, then loosen 1/4 turn, start the flywheel. This can be done several times to make the mixing ratio od gasonline and air re ach the normal working mix ratio. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Please allow little differs due to manual measurement. Kids should be accompanied by adult. Kids under 8 are not recommended to play. Please be carful when you add the fuel. An O-ring, which is not so airtight and can be started better. 1 X Eachine Hit & Miss Gas Engine (With Base).