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In view of the particularity of the application scope of small excavators, end users must not conduct preliminary investigation and preparation for the following conditions before operating a small excavator:   1. Before entering the construction site, you need to carefully understand the construction conditions and tasks. After entering the work site, you should strictly abide by the relevant safety regulations of the construction site. The construction conditions and tasks include: the height and depth of filling and excavation, the status and location of exposed cables, various pipes, slopes and wire heights, tombs, tunnels and various obstacles. 2. Carefully check whether the circuit switch contacts and insulation are in good condition. 3. Check whether the fuel, lubricating oil and coolant of the excavator are sufficient. If they are insufficient, add them in time. When adding fuel, it is strictly forbidden to smoke or be close to an open flame to avoid causing a fire. 4. Check the pipelines and operating valves, working cylinders, oil pumps, etc. of the hydraulic system for leaks and abnormal movements. 5. Check whether the wire rope and the clips fixing the wire rope are firm and secure. 6. When the excavator is operating in rocky soil or frozen soil, blasting should be stopped first, and then excavation should be stopped. 7. Inspect, maintain, adjust and tighten the excavator according to daily routine maintenance items. 8. Place the main clutch control lever in the "neutral" position and start the engine (if you start by hand, be careful that the handle may hit someone; if you start with a hand pull rope, do not wrap the pull rope around your hand). Check whether each instrument, transmission mechanism, working device, and braking mechanism are normal. Only after confirmation is correct can you start working. 9. After the engine is started, personnel are strictly prohibited from standing in the bucket, on the arm, on the tracks and in the cab.  

1. Analyze the temperature of the working environment of the small excavator and also analyze the maximum load that the working object of the small excavator can bear. 2. After making an accurate judgment, select the appropriate brand of hydraulic oil based on the ambient temperature of the small excavator's operating area and the load conditions of the small excavator's working object. 3. Replace and maintain the filter element regularly, and pay attention to purchasing genuine hydraulic oil. 4. When the boom phenomenon occurs during operation, you can first reduce the pressure of the boom (less than the normal pressure) and observe whether the boom will fall quickly? 5. If the falling speed is very fast, it is recommended to replace the boom oil seal. 6. If the fault still exists after replacing the oil seal, you need to check the boom oil return safety valve. 7. Check the pressure value of the excavator pump valve group.  

How to buy mini excavator with good cost performance   1. Be sure to choose a large-capacity water tank to save water filling time and ensure continuous construction.   2. It is best for the machine to provide a variety of power to meet different construction requirements.   3. The operating buttons of the machine are simple and easy to operate, and the operator can operate the machine skillfully after a simple understanding.   4. The overall shape is beautiful and the cab is fashionable. A product with a beautiful appearance may not necessarily be of good quality, but a product with a rough appearance may not be of good quality.   5. The starting method of the small excavator is also very important. When we choose, it is best to choose electric start. It would be better if it also has the function of hand start, in case of emergency.   6. The last good brand is also crucial. We can check word-of-mouth online and do more comparisons to see which one has the best price/performance ratio and which one to choose.   When purchasing a small excavator, just pay attention to the above points. I hope it will be helpful to everyone.