Komatsu — Komatsu PC450LC-6 Hydraulic Excavator Operation & Maintenance Manual (EN)

12. OPERATION 12.2.2 STARTING IN COLD WEATHER WARNING Check that there are no persons or obstacles in the surround- ing area, then sound the horn and start the engine. Never use starting aid fluids as they may cause explosions. NOTICE Do not keep the starting motor rotating continuously for more than 20 seconds. If the engine fails to start, repeat from step 2 and after waiting for about 2 minutes. When starting in low temperatures, do as follows. 1. Set fuel control dial y at the low idling (MIN) position. 2. Hold the key in starting switch x at the HEAT position, and check that preheating monitor c lights up.

After about 30 seconds, preheating monitor lamp c will flash for about 10 seconds to indicate that preheating is finished. REMARK The monitor and gauge also light up when the key is at the HEAT position, but this does not indicate any abnormality. PC450-ENG 2-49