实践中发现,利用电起动机起动的农用动力机械使用日久,起动机电磁开关触点将会逐渐烧蚀,造成起动困难。故障刚开始出现时,接通起动开关,起动机处有“嗒、嗒”的响声,但不易起动,有时竟要接通三四次才勉强起动着。当故障严重时,响声没有了,也起动不着了。 In practice, it has been found that the use of electric starter to start the agricultural power machinery is used for a long time, starter electromagnetic switch contact will gradually ablation, resulting in difficult to start. At the beginning of the fault, turn on the start switch, the starter at the “click, click ” sound, but not easy to start, sometimes actually connected to three or four times before reluctantly started. When the fault is serious, the sound is gone, but also start out.