4.4.1 Engine starting Before starting the engine confirm the fuel throttling and gear box engaging lever is in NEUTRAL position (refer figure 4.20). Do not touch the throttle or throttle lever while starting the engine. Engine should start and stabilize in the specified idle speed without any aid. If engine has stopped by pressing emergency button, release the button before restart. If the engine is stopped by shutting main fuel supply valve, open the fuel valve before the starting attempt. Always ensure safe coolant level in the heat exchanger expansion tank.
Figure 4.20 4.4.2 Engine warm up After the engine is started, it takes a while for the lubricating oil to re-establish the required oil film in between moving parts. The most appropriate clearance conditions between moving parts are obtained only when the engine parts reach the normal operating temperature. Gradually accelerating the engine during warm up will avoid abnormal wear and tear of liner, piston rings and bearings caused by insufficient lubrication. 4.4.3 Monitoring the engine oil Always maintain the correct oil level in the sump. Too high and very low level will be a threat to engine safety.
During warm-up period, engine should be loaded gradually, until it reaches the temperature of 60°C. Required oil pressure will ensure enough oil flow to various engine sub-assemblies and parts. Oil pressure will vary depending on viscosity and oil viscosity depends on temperature. Normal oil pressure at 105°C should be between 300-350 KPa 21