求翻译：空载，接通电源，按电机启动按钮，电机工作，指示灯HL亮，油泵工作，经油滤，从油箱吸油，经溢流阀回油箱是什么意思？

正在翻译，请等待...

unladen, switching on the power, the electric Start button, the electrical work HL indicator light, bright, oil pump, oil filter, absorb oil from oil tank, the valve is connected to the tank

The idling, puts through the power source, according to the electrical machinery start button, the electrical machinery work, indicating lamp HL is bright, the oil pump work, filters after the oil, blots from the fuel tank, returns to the fuel tank after the overflow valve

No load, powered by motor launch button, the electrical work, HL led light, oil pumps, oil filter, the tank oil absorption, relief valve to tank

正在翻译，请等待...