Maintenance can be roughly divided into two parts: A, technical maintenance of agricultural machinery maintenance according to the "prevention is better than cure, raise is more important than" the principle, carry out technical and maintenance procedures, power machinery, maintenance cycle should be determined according to the main fuel consumption on time, according to the number, according to item, according to the technical requirements for maintenance, achieve technical maintenance standards, to ensure that the machines in good technical condition. The maintenance of agricultural machinery should be carried out in strict accordance with the instructions for use and the contents stipulated by local agricultural machinery administrative departments. The advanced maintenance of the locomotive shall be carried out indoors under the guidance of the maintenance management personnel. Fuel powered machinery to be four no leakage (no oil leakage, no water leakage, no gas leakage, no electricity leakage), five clean (oil, water, gas, machinery, tools), six closed (diesel tank mouth, gasoline tank mouth, oil filler mouth, oil inspection mouth, carburetor, magneto), one good (technical state intact); Supporting farm tools to implement perennial repair, to achieve three flexible (operation, rotation, lifting and lifting flexible), five not (not open, not blunt, not out of shape, not rust, not missing parts), one intact (technical state intact). The overhaul of tractors, automobiles and internal combustion engines for repair of agricultural machinery must be undertaken by agricultural machinery repair factories with the capacity for overhaul. Agricultural machinery repair factory should ensure that the overhaul locomotive to meet the quality acceptance standards of power, fuel consumption rate and other technical and economic indicators, the implementation of three guarantees, and a clear warranty period. According to the needs of agricultural machinery operations, the technical state of agricultural machinery for regular inspection, to ensure timely repair. Small tractors may be inspected regularly and repaired as required. The maintenance and repair of agricultural machinery also exists the problem of service quality. In order to protect the legitimate interests of farmers, the competent departments of agricultural machinery in China, together with the administrative departments for industry and commerce, have formulated corresponding administrative and supervisory measures for standardizing the maintenance behavior of agricultural machinery, strengthening the maintenance management and ensuring the quality of maintenance services. Farmers may choose units and individual repair households that provide maintenance services for them in accordance with these measures.