MACHINE OPERATIONS AND CONTROLS OPERATION 5. After carrying out the warming-up operation, check that each gauge and monitor lamp is in the following condi- tion. G Engine water temperature gauge (6): Inside green range G Fuel gauge (7): Inside green range G Engine oil pressure monitor (8): OUT G Charge level monitor (9): OUT 6. Check that there is no abnormal exhaust gas color, noise, or vibration. If any abnormality is found, repair it. 7. Set lock lever (2) to the LOCK position and check that it is impossible to operate the swing and work equipment with the left and right work equipment control levers. 3-60