Preparations for standby l. Before a large diesel is started it must be warmed through by circulating hot water through the jackets, etc. This will enable the various engine parts to expand in relation to one another. 2. The various supply tanks, filters, valves and drains are all to be checked. 3. The lubricating oil pumps and circulating water pumps are started and all the visible returns should be observed. 4. All control equipment and alarms should be examined for correct operation 5. The indicator cocks are opened, the turning gear engaged and the engine turned through several complete revolutions. In this way any water which may have collected in the cylinders will be forced out. 6. The fuel oil system is checked and circulated with hot oil. 7. Auxiliary scavenge blowers, if manually operated, should be started. 8. The turning gear is removed and if possible the engine should be turned over on air before closing the indicator cocks. 9. The engine is now available for standby The length of time involved in these preparations will depend upon the size of the engine.