Usage method: 1. Manually move the flywheel to see if it is smooth and not smooth to adjust the relevant screw (adjusted before sale) 2. Check whether the sliding parts are clean or not. 3. fill up the alcohol lamp to less than two-thirds. 4. Lighting the alcohol lamp on the front of the test tube, about 1 minute later, the flywheel was pulled and the engine rotated. The preheating time with the generator is slightly longer. Matters needing attention: 1. Don't touch the baked test tube and the metal connected with it to avoid scalding. 2. Lighting alcohol lamp for a long time, alcohol lamp can not be easily touched, in order to avoid burns. 3. Suitable for operation under the guardianship of parents over 8 years old. 4. When heating, the cotton thread of the alcohol lamp should not touch the test tube, the piston should not be refueled, and the connecting rod should be lubricated. Metal Body Quartz Glass Hot Cylinder Single Cylinder Stirling Engine Model - Red Features: .Beautiful Appearance: The connection is made of red metal and looks novel and chic.The body is made of aluminium alloy fine metal polished.The surface is smooth and bright, emitting silver light, not easy to rust and fade. It looks very mechanical and technical, and realizes the combination of texture and beauty .Superior Performance: Stable and strong, quartz heating tube can run at high speed for a long time without wear.The alcohol lamp is fixed on the metal base for safer and more reliable .Operation Process: The engine model is placed in a horizontal position, and alcohol is injected into the alcohol lamp to ensure the safety, and the alcohol lamp is ignited. The alcohol lamp heats the piston tube, and the dry air expands to generate power, drive the flywheel to rotate quickly, thus lighting the lamp. Use 95% alcohol(not including) during operation, no water, kerosene, gasoline, lighter oil, liquor and spirits .Significance and Value: Entertaining, through the hands-on operation, you can observe the Stirling engine operation process, understand the principle of Stirling power more intuitively, and deepen your interest in physics learning. The product itself has been assembled and can be directly used, and its superior quality and exquisite appearance also make it have a high collection value and can be used as a high-end gift .Application: The product is suitable for people over 14 years old .Tips: Be careful not to be hot to the high temperature during the operation Specifications: .Color: As Shown .Material: Quartz Glass + Aluminium Alloy .Product Weight: 500g .Package Dimensions: 20 x 15 x 10cm .Package Weight: 600g Package Content: .1 x Stirling Engine Model