First, the appearance of quality inspection In the purchase of walking tractors, we must first pay attention to the inspection of the appearance of quality, including the coating quality of the parts and the quality of the manufacturing of various parts. The paint should be bright and uniform, without missing spray, peeling, peeling and rust; the external parts are intact. The surface of each casting is smooth and there must be no cracks. Welds at welds must be smooth and firm; for important components such as engines and engine blocks, engine cylinder heads, high-pressure oil pumps and oil line joints, drive wheels, and racks and gearboxes, etc. The connection bolts are complete and reliable and cannot leak oil. The safety protection of hand drags involves the personal safety of the operator and others. It is recommended that users choose the best security device. It is safe to protect the starting pawl, power output shaft, drive wheel, flywheel, transmission belt, exhaust pipe and other parts, and to attach a safety warning sign on the frame oil tank and other obvious positions. A model that allows users to rest assured. The second is to see if the instruments and lamps are complete and effective. You can use the engine decompression lever to open the engine slowly, and watch the oil pressure gauge or other oil pressure indicator to see if there is any pressure rise. Second, the operating agency checks to check whether the operating mechanism of the card collision phenomenon, the operation is effective and reliable. When pulling the clutch handle into the “separate†position, the separation should be thorough; in the “combined†position, there should be no slipping; in the “braking†position, the tire can be manually pushed in place to check if the brake is Effective and reliable. The gear shift lever should have obvious feel when it is engaged. It should not be stuck or difficult to hang on the gear or hang up. In the stop state, the main gear lever can only be engaged with one or no more than two from the neutral position. The file can't be automatically disengaged or in disorder when walking. When the steering clutch is inspected, hang up the gear, place the main clutch in the engaged position, hold the handle, and the drive wheel can be rolled lightly. Loosen the steering clutch handle, then it is difficult to move. It is also possible to check left and right separately, hold the handle on one side, and turn it in the opposite direction. Third, start the operation check Start the engine for operation check. Before starting the engine, check the oil level of engine oil, gear oil, and whether there is fuel and cooling water. After everything is normal, you can start and check if the engine start is difficult. After the engine runs smoothly, observe the color of the smoke emitted by the exhaust pipe. The smoke emitted by a diesel engine during normal operation is colorless or light grey. During the operation, it is necessary to pay attention to whether or not the operating parts have abnormal noise. Whether the steering is flexible and the braking is reliable. Run for about ten minutes to check the floor for leaks. 4. Checking the random item After selecting the hand-drag, check the relevant technical documents and random items against the packing list to verify whether the certificate and the machine number are the same. Also ask the sales organization or manufacturing company to issue sales invoices. This is not only the proof of the user's purchase payment, but also the necessary documentation for the user to apply for a license in the future. Do not forget to check and fill in the three-package service card. The state maintains clear provisions on the maintenance of agricultural machinery products. This is the basis for warranty claims and claims made by production companies when quality problems occur.
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