小四轮拖拉机的冷却系统多属于开式,而且不装水泵和风扇,无节温器,结构比较简单。因此个别机手在使用上忽略了对它的维护保养,时常出现水箱无水起动机车、缺水仍坚持作业甚至“干锅”等情况,致使发动 Small four-wheel tractor cooling system are mostly open, and do not install pumps and fans, no thermostat, the structure is relatively simple. Therefore, the use of individual handguns in its neglect of its maintenance, often appear tank anhydrous starter car, water still insist on homework or even “Griddle ” and so on, resulting in the launch