Komatsu D31EX-21, Operation & Maintenance Manual, Page: 136 / 256

OPERATION
OPERATION
3-84
STOPPING ENGINE 3
NOTICE
If the engine is stopped abruptly, service life of component
parts of the engine may be considerably reduced. Hence
do not stop the engine abruptly except in an emergency. If
the engine has 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.
1. Lower the work equipment to the ground.
2. Place fuel control lever (1) in the low idling position and run
the engine at low idling speed for about 5 minutes to allow
it to gradually cool down.
3. Turn the key in ignition switch (2) to the OFF position.
The engine will stop.
REMARK
When the key in starting switch (2) is turned to the OFF posi-
tion, the engine stops, but the machine power supply is not cut
immediately.
The power supply is maintained for several seconds to enable
the controller to save the operating condition to memory and
shuts down the system after that. The length of time that the
power supply is maintained depends on the operating condi-
tion.
4. Remove the key from starting switch (2).
Low idling