Komatsu HB365LC-3 Operation & Maintenance Manual page 263

OPERATION
NOTICE
Do not stop the engine abruptly except in an emergency.
Otherwise, the service lives of component parts of the en-
gine will be reduced.
If the engine is overheated, do not try to stop it abruptly
but run it at medium speed to allow it to cool down gradu-
ally, and then stop it.
If the engine is stopped during the aftertreatment devices
regeneration, the components may be damaged.
When stopping the engine, stop the aftertreatment devices
regeneration first according to "PROCEDURE FOR AFTER-
TREATMENT DEVICES REGENERATION DISABLE SET-
TING (3-124)", then stop the engine after running it at low
idle for approximately 5 minutes. Then stop the engine.
Stop the engine according to the following procedure.
1.
Set the lock lever to LOCK position (L).
2.
Run the engine at low idle for approximately 5 minutes to
cool down the engine gradually.
3.
Turn the starting switch key (1) to OFF position (A), and
stop the engine.
4.
Remove the key from the starting switch (1).
MACHINE OPERATIONS AND CONTROLS
3-191