Komatsu PC308USLC-3E0 Operation & Maintenance Manual page 145

OPERATION OPERATION
REMARK
Regardless of the ambient temperature, it is possible to start the
engine preheating manually.
1. Turn the key in starting switch (3) to the left from OFF position
(A). The preheating monitor lights up and engine preheating
starts.
(Preheating continues while the key in starting switch (3) is held
at the left position.)
2. The preheating monitor starts lighting about 30 seconds after
preheating starts and then goes off in about 10 seconds.
3. After the preheating monitor goes off, turn the key in starting
switch (3) to START position (C). The engine will start.
If the engine cannot be started with the above procedure, wait for
at least two minutes, then start again from Step 1.
MACHINE OPERATIONS AND CONTROLS MACHINE OPERATIONS AND CONTROLS
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