Precautions When Running Engine Inside Building - Komatsu D475A-5E0 Operation & Maintenance Manual

SAFETY
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE

PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING

The engine exhaust gas contains substances that may damage
your health or even cause death. Start or operate the engine in a
place where there is good ventilation. If the engine or machine
must be operated inside a building or under ground, where the
ventilation is poor, take steps to ensure that the engine exhaust
gas is removed and that ample fresh air is brought in.
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