Komatsu PC15MRX-1 Operation And Maintenance Manual page 90

MACHINE OPERATIONS AND CONTROLS
4. After carrying out the warming-up operation, check that
each gauge and monitor lamp is in the following condi-
tion.
If there is any abnormality, carry out maintenance and
repair.
Engine water temperature gauge (4):
Inside green range
Fuel gauge (5): Inside green range
Engine oil pressure monitor (6): OFF
Charging monitor (7): OFF
Preheating monitor (8): OFF
5. Check that there is no abnormal exhaust gas color, noise,
or vibration. If any abnormality is found, repair it.
6. 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.
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OPERATION