Komatsu D61EX-24 Operation & Maintenance Manual page 240

OPERATION
3.
When the engine starts, release the starting switch key (2).
The key will return automatically to ON position (B).
REMARK
• White smoke may be discharged for a short time immediately after the engine is started or during the after-
treatment devices regeneration in the cold season, but this is not a failure.
• The smell of the exhaust gas is different from that of the conventional diesel engine because of the exhaust
gas filtering function.
MACHINE OPERATIONS AND CONTROLS
3-189