Komatsu WA320-5H Operation & Maintenance Manual page 132

OPERATION
2. Depress accelerator pedal (3).
3. When preheating pilot lamp (2) goes out, turn the key in
starting switch (1) to the START position.
Keep the key in starting switch (1) at the START position to
keep the starting motor running until the engine starts.
4. The starting motor will continue to turn and the engine will
start.
5. Method of starting engine in temperatures of approx. -20°C (-4°F).
1. Keep the engine starting motor running for the max. 20 seconds, holding the key of engine starting switch (1)
in the START position, until the engine starts up.
1. If the engine fails to start up even after running the engine starting motor for about 20 seconds, stop the engine
starting motor once (release the engine starting switch key), and try the same process again after a pause for
a minute or so.
1. If the engine still fails to start up after the second attempt, try the same process for the third time after a pause
for a minute or so.
2. When the engine has started up and the engine speed
rises, release the key of engine starting switch (1). The
key will automatically return to the ON position.
3. Keep stepping on accelerator pedal (3) until the engine is
fully running.
REMARK
Keep the accelerator pedal depressed after the engine starts
up, until engine warming-up run is finished. Do not step on the
pedal to the full stroke.
OPERATION
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