1. Air-cooled machine cools down with water. Some operators saw that the air-cooled machine had a high temperature, and worried about damaging the machine, so they used watering methods to help cool down. In fact, it is a very wrong approach. When the temperature is suddenly cooled with water, the cylinder liner suddenly shrinks, it is easy to pull the cylinder, break the ring, or even rupture the cylinder liner.
2. Do not pay attention to class maintenance. Some operators think that it is enough to do maintenance every few days. In fact, wear and tear is a process that accumulates day by day, and shift maintenance is just as important.
3. Not paying attention to the quality of fuel and lubricating oil. Poor fuel quality not only makes the machine power insufficient, but also accelerates the wear of the oil pump and the core sleeve. The quality of the lubricating oil directly affects the start-up performance and service life of the machine, so you must not be careless. Lu Qibing, from Shahe Village, Yaowan Township, Yichang City, reported that his machine has been working very well. It was because one operation lacked lubricating oil and renewed oil was added. As a result, the performance of the machine deteriorated, and the problem was finally solved after an overhaul.
4. Improper use of sealant for the partial cover of the engine. After the sealant is used for the partial cover gasket, the excess glue easily enters the gearbox. Due to the long-term work and the suction of the oil pump, the sealant can easily block the oil inlet hole, so that the crankshaft and connecting rod cannot be effectively lubricated.