When purchasing a walk-behind tractor, first of all, pay attention to checking the appearance quality, including the painting quality of the covering parts and the manufacturing quality of each machine part. The paint should be bright and even, free from leaking, peeling, peeling and rusting; external parts intact. The surface of each casting is smooth and free of cracks, and the welding seam of the welding part should be smooth and firm; for important parts such as engine and body, engine cylinder head, high-pressure oil pump and oil circuit joint, driving wheel, frame and gearbox, etc. Whether the connecting bolts are complete and reliable, and there must be no serious oil leakage. The second is to see whether the instruments and lamps are complete and effective. You can open the engine pressure reducing lever and slowly shake the engine to check whether the oil pressure gauge or other oil pressure indicating device shows the pressure rise. Check whether each operating mechanism is stuck or not, and whether the operation is effective and reliable. Pull the clutch handle and put it in the "disengaged" position, the separation should be complete; in the "joined" position, there should be no slippage; in the "braking" position, you can manually push the tires in place to check whether the brakes are turned Effective and reliable. The gear lever should have an obvious feel when shifting, and there should be no jamming, difficulty in shifting, or inability to shift gears. In the stop state, the main shift lever can only be shifted from the neutral position to one or no more than two gears. , can not automatically disengage or randomly block when walking. When checking the steering clutch, put the gear in gear, put the main clutch in the engaging position, hold the handle, the driving wheel can roll easily, and loosen the handle of the steering wheel, it is difficult to push. You can also check left and right separately, hold the handle on one side, and you can turn it in the opposite direction.
Start the engine to check the operation. Before starting the engine, check the oil level of engine oil, gear lubricating oil and whether there is fuel and cooling water. After everything is normal, you can start and check whether the engine is difficult to start. After the engine runs smoothly, observe the color of the smoke discharged from the exhaust pipe. The smoke emitted by the diesel engine during normal operation is colorless or light gray. During operation, pay attention to whether there is any abnormal noise from each running part. Whether the steering is flexible and the braking is reliable. After running for about ten minutes, check the ground for oil and water leakage.
The safety protection of the hand tow involves the personal safety of the operator and others. It is recommended that users choose a model with complete safety protection devices. The starting claws, power output shafts, drive wheels, flywheels, transmission belts, exhaust pipes and other parts are all protected, and the hand trailers with safety warning signs are attached to obvious positions such as the frame fuel tank, which can be said to be safe. A model that can reassure users.
After selecting the hand tow, check the relevant technical documents and random items against the packing list, and verify whether the serial number of the certificate and the machine are consistent. It is also necessary to ask the sales unit or production enterprise to issue a sales invoice, which is not only a voucher for the user to purchase the machine, but also a necessary document for the user to handle the license and other procedures in the future. Don't forget to check and fill in the three-guarantee service card. The state has express regulations on the maintenance of agricultural machinery products, which is the basis for requesting warranty and claim from the manufacturer when the quality problem of the product purchased by the user occurs.
