Komatsu PC138USLC Operation & Maintenance Manual page 124

OPERATION
(D): HEAT position
Set to this position when starting the engine in cold weather.
When the starting key is turned to HEAT position (D), the preheating monitor lights up. Keep the key in this position
until the preheating monitor flashes. When the preheating monitor flashes, release the key immediately. When the
key is released, it will return automatically to OFF position (A), so turn it immediately to START position (C) and start
the engine.
REMARK
The engine does not start, if the lock lever is not in the LOCK
position (L). Make sure first that the lock lever is in the LOCK
position (L), and then turn the engine starting switch.
Fuel Control Dial
Use this dial (2) to control the engine rotating speed and output.
(a) Low idling (MIN): Turn dial fully to left
(b) Full speed (MAX): Turn dial fully to right
REMARK
On this machine, the engine is electronically controlled to give the
optimum matching with the main pump. There is an area without
any feeling on the dial, but this is not an abnormality.
Range (c): No feeling (engine speed constant)
P mode: 22%
E mode: 30%
Position (d): High idling
Cigarette Lighter
This switch (3) is used when lighting cigarettes.
When the cigarette lighter is pushed in, it will return to its original
position after several seconds, so pull it out to use it.
If the cigarette lighter is removed, the socket can be used as an
85W (24V x 3.5A) power source.
NOTICE
This cigarette lighter is for 24V. Do not use it as the power source for 12V
equipment.
DETAILED CONTROLS AND GAUGES
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