EACHINE ET1 Horizontal Hit & Miss Complete Engine STEM Upgrade Stirling Engine. Eachine ET1 STEM Upgrade Hit & Miss Gas Engine Stirling Engine Model Combustion. 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: ZIPPO Oil or Gasoline. The best tappet clearance: 0.5mm. Revolutions Per minute:1200rmp. Open the bottom of the 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, and start the flywheel. This can be done several times to make the gasoline and air mixing ratio reach the normal working mix ratio. Due to the different displays and different lights, the picture may not reflect the actual color of the item. Thanks for your understanding. Please allow little differences due to manual measurement. Kids should be accompanied by an adult. Kids under 8 are not recommended to play. Please be careful when you add fuel. An O-ring, which is not so airtight and can be started better. Hit & Miss Gas Engine (With Base).