1) Theory guides practice. The basic principle and basic structure of small gasoline engines should be fully grasped before failure analysis and processing can be carried out, especially for different models of oil engines, specific models must be analyzed;

2) When a fault occurs, a comprehensive and scientific analysis and judgment must be carried out according to the scene to ensure that the processing of the fault is accurate, rather than relying on imagination or past so-called experience to deal with the problem. Gasoline engines often have failures in oil circuits, circuits and other parts at the same time, resulting in more complex failure phenomena. Sometimes similar phenomena will occur at different failure points, causing certain difficulties in troubleshooting. Through the analysis and thinking of the failure phenomenon observed on the spot, various possible causes of the failure are envisaged and analyzed and compared, and the scope and location of the failure can be determined. Then from simple to complex, from the outside to the inside, first analyze the circuit and then analyze the oil circuit, then adjust the ignition time, check the sequence of gas distribution timing, and compress the fault to a certain point;

3) Develop good habits, do the necessary inspections before starting the machine, and make regular inspections during the operation of the machine to avoid sudden failures as much as possible;

4) Strictly carry out technical maintenance at all levels on the oil machine at ordinary times to ensure that the oil machine is in good working condition and avoid sudden failures and major accidents.