Komatsu PC1250-11, Original Instructions Manual

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Revolving lamp switch is used to light up the yellow revolving
lamp on top of the cab.
(a) ON
Lights up
(b) OFF
OFF
ENGINE SHUTDOWN SECONDARY SWITCH
NOTICE
The engine shutdown secondary switch is used to stop the engine when the starting switch is turned to
OFF position but the engine does not stop.
• Use the engine shutdown secondary switch only in an emergency.
Contact your Komatsu distributor for repair immediately when there is any abnormality on this
switch.
• If the engine shutdown secondary switch is moved to the "stop engine" position by mistake while
the machine is operating normally, “Engine Shutdown Secondary SW In Operation” is displayed on
the machine monitor.
If “Engine Shutdown Secondary SW In Operation” is displayed on the machine monitor, check that
the switch cover is closed and the switch is in the "normal" position. If not, set it to the "normal"
position.
1.
Raise cover (C) and open it.
2.
Turn the engine shutdown secondary switch to upper posi-
tion (a) and the engine stops.
(a) Engine stopped
When abnormal (switch is set to upper position)
(b) Normal
When normal (switch is set to lower position)
• When cover (C) is closed, the engine shutdown secondary switch automatically returns to the normal
position (b).
EXPLANATION OF COMPONENTS OPERATION
3-94