1. Technical maintenance The maintenance of agricultural machinery must be in accordance with the principle of "prevention is more important than treatment, maintenance is more important than repair", and technical maintenance procedures must be implemented. Power machinery must determine the maintenance cycle according to the main fuel consumption, on time, by number, and by item. Maintain according to technical requirements to meet technical maintenance standards and ensure that the machines and tools are in good technical condition. The maintenance of agricultural machinery must be carried out in strict accordance with the instructions for use and the contents specified by the local agricultural machinery management department. Advanced maintenance of locomotives should be carried out indoors under the guidance of maintenance management personnel. Fuel-powered machinery must achieve four leaks (No oil leakage, no water leakage, no air leakage, no electricity leakage), five clean (oil, water, gas, machines, tools), six closed (diesel tank port, fuel tank port, oil filling port, oil inspection port, carburetor, magneto), one in good condition (in good technical condition); supporting agricultural tools must be repaired all year round to achieve three flexibility (flexible operation, rotation, and lifting), five no (not rough, dull, deformed, not rusty, not missing parts), one in good condition (in good technical condition). 2. The repair of agricultural machinery The major repairs of tractors, automobiles, and internal combustion engines must be undertaken by agricultural machinery repair factories with major repairs capabilities. Agricultural machinery repair and distribution factories must ensure that overhauled locomotives meet the technical and economic indicators such as power and fuel consumption specified in the quality acceptance standards, implement three guarantees, and have a clear warranty period. The technical status of agricultural machinery should be regularly inspected according to the needs of agricultural machinery operations to ensure timely repair. Small tractors can be inspected regularly and repaired on demand. There are also service quality problems in the maintenance and repair of agricultural machinery. In order to protect the legitimate interests of farmers, my country's agricultural machinery authorities, together with the industrial and commercial administration departments, have formulated corresponding management and supervision measures to standardize agricultural machinery maintenance behavior, strengthen maintenance management and ensure the quality of maintenance services. Farmers can follow these measures to choose which provides maintenance services for themselves. Units and individual repair households.