: Check the annunciator panel for engine oil pressure, hydraulic pressure, and battery charge lamps before operation. Ground Rules
: A critical "pre-flight" inspection. This includes verifying hydraulic systems, cables, shackles, hooks, and other vital components to ensure the crane is in working order. Kobelco 7080 Crane Operators Manual
If you buy a digital version, print it out and put it in a waterproof binder. A tablet is great until you drop it in a puddle of diesel. Paper manuals are unbreakable. : Check the annunciator panel for engine oil