. SAFETY PRECAUTIONS DURING OPERATION 2 - 21 PRECAUTIONS IN COLD AREAS Carry o ut the warming-up operation t horoughly. If the machine i s not thoroughly warmed up before the gear shift lever or dump lever are operated, the reaction of the m achine wil l be s low or may change suddenly, and this may cause a n accident. If the b attery electrolyt harg or start the engine There i s a hazard t hat this will ignite the battery and cause the batter y to explode. Before charging or starting the engin e with a differen t power source, melt the battery electrolyte and c heck that there is no leakage of electrolyte before starting. different powe